Sistem Tertanam Jobs

I am building a tiny GPS tracker device for my company and need an experienced PCB designer. Project Requirements: - Design schematic and PCB layout for a compact GPS tracker. - Use SIM7080G (LTE/NB-IoT with GNSS) module. - Include SIM card slot, GPS antenna connector, LiPo battery connector, and charging circuit. - Board size should be approximately 20 mm x 25 mm. Deliverables: - Complete schematic - PCB layout - Gerber files for manufacturing - Bill of Materials (BOM) - Pick and Place file (optional) Preferred Tools: KiCad, Altium Designer, or EasyEDA. Experience Required: - Experience designing IoT or GPS tracking devices - Knowledge of RF layout and antenna placement Budget: $30 – $50 (negotiable) Please share examples of previous PCB designs.

Description Of Project - HRID-AI is a low cost handheld device aimed at estimating ejection fraction using multimodal biosignals (ECG, seismocardiography, and cardiac acoustics). It uses a combination of biosensors to detect abnormalities in ECG, presence of abnormal heart sounds and their interpretation as well as usage of seismocardiographic signals to provide an estimate of Ejection Fraction. The principle has been verified through multiple studies done in reputed institutions The goal is rapid point-of-care triage for echo referral in emergency and low-resource settings in patients of Heart Failure with Reduced Ejection fraction We need your support, skills and expertise for sensor integration, embedded design, signal acquisition. Current Status- We have so far been able to dev...

ESP32-S3 VoIP Phone — Proof of Concept Firmware The gig: I need someone to take a Waveshare ESP32-S3-Audio-Board and a 2.8" TFT display and turn it into a working WiFi voice call device. This is for a Kickstarter demo — it needs to work and sound decent, not be production-ready. Hardware (I have both, can ship if needed): Waveshare ESP32-S3-Audio-Board (ESP32-S3, ES8311 codec, onboard mic, onboard speaker, WiFi) — 2.8" TFT LCD Touch Screen (ILI9341, 320x240, SPI) What "working" means: Connects to WiFi Registers to a SIP server (FreePBX, , Twilio — whatever's easiest) Can make and receive a voice call Two-way audio through the onboard mic and onboard speaker Display shows basic call status: idle, calling, incoming call, in-call That'...

Solar PoE Switch: This PoE switch features an integrated MPPT solar charge controller and works directly with photovoltaic solar panels (max. 300W) and batteries for continuous PoE power supply to security cameras, bridges, LED lights, and more. Four PoE Outputs: Ports 1-2: 802.3af/en PoE+ 30W or 24V passive output; Ports 3-4: up to 802.3bt PoE++ 90W output; Total PoE budget: 120W. Intelligent Battery Management: Includes local battery status LEDs and remote battery management. Supports various battery types (lead-acid, lithium, or LiFePO4), 12V or 24V up to 10A. L2 Management: VLAN, STP, link aggregation, QoS, MAC/IP-based ACLs, and more. Managed via Web GUI, CLI, or SNMP Alarm I/O - Supports alarm input and alarm output triggered by temperature sensors, offline PoE devices, etc. Remote ...

I will provide the full Proteus project (schematic, PCB, libraries). Your task is to recreate that board in Altium Designer as an exact, bit-for-bit copy—same dimensions, traces, footprints and reference designators—so the migrated file can drop-in-replace the original. Once the design lives in Altium, prepare a complete production package for JLCPCB consisting of: • Gerber set generated with Altium’s CAM outputs • Pick-and-place centroid file (CSV) referenced to the board origin JLCPCB expects • Clean BOM that matches the Altium project and includes LCSC part numbers and JLCPCB’s preferred column headings Please keep the design locked as-is; no routing or placement tweaks. Organise the schematic sheets and PCB libraries so I can add compo...

I need an experienced PCB programmer to reprogram a multi-layer PCB for a coffee maker. The board is used for a coffee maker. Required Skills and Experience: - Proficiency in reprogramming multi-layer PCBs - Experience with radio frequency (RF) applications - Knowledge in embedded systems - Familiarity with brewing settings, temperature control, timing and scheduling, and pump control functionalities

I’m looking for an experienced embedded systems / hardware engineer to take over an existing ESP32-based NFC audio player project . ⚠️ Important clarification The physical PCBs are not currently available. I am looking for an embedded systems developer to review and complete an existing ESP32 NFC audio player project. The project already includes: • PCB design files (Gerber, BOM, Pick&Place, STEP) • Partial firmware for ESP32 • NFC reader and microSD audio architecture IMPORTANT This project is strictly limited to design audit and firmware work only. No PCB manufacturing, hardware assembly, or physical prototype is required. Project Scope Phase 1 – PCB & Firmware Audit • Review existing PCB design files • Review current firmware structure ...

I have a new IoT datalogger concept and need a full-fledged PCB layout that is ready to send straight to fabrication. The schematic is not fixed yet, so I’m relying on your board-level expertise to translate high-level requirements into a clean, production-ready design. What I already know • Form factor: credit-card sized (roughly 85 × 55 mm, single board). • Core: a low-power MCU or module capable of handling multiple digital and analog inputs. • Future-proofing: headers or pads for common temperature, humidity, and pressure sensors as well as optional wireless modules (Wi-Fi, Bluetooth, or cellular—final choice can be discussed once power budget is clear). • Power: ability to accept both rechargeable battery input and external DC (buck/boost circuit...

Project Details ₹600.00 – 1,500.00 INR Bidding ends in 6 days, 22 hours Project Scope We would like to proceed with the prototype development of the SoilKare Agricultural Monitoring & Crop Quality Device as described in the engineering specification document we shared earlier. The system includes the following main subsystems: • STM32-based embedded controller • LTE communication module (SIM7600 or equivalent) • Soil monitoring sensors (pH, EC, moisture, temperature) • Water quality sensors (pH, EC/TDS, temperature) • Crop / leaf health sensors (chlorophyll / multispectral sensor) • Agricultural produce quality testing sensors (Brix, nitrate, crop moisture) • External ADC interface (ADS1115 or similar) • RS-485 interface for ind...

Project Scope We would like to proceed with the prototype development of the SoilKare Agricultural Monitoring & Crop Quality Device as described in the engineering specification document we shared earlier. The system includes the following main subsystems: • STM32-based embedded controller • LTE communication module (SIM7600 or equivalent) • Soil monitoring sensors (pH, EC, moisture, temperature) • Water quality sensors (pH, EC/TDS, temperature) • Crop / leaf health sensors (chlorophyll / multispectral sensor) • Agricultural produce quality testing sensors (Brix, nitrate, crop moisture) • External ADC interface (ADS1115 or similar) • RS-485 interface for industrial sensors (Modbus RTU support) • Camera module for pest detection (ima...

I need help turning three off-the-shelf modules now sitting in my glasses prototype—a USB 2.0 hub, a USB audio codec (mic plus stereo out) and a dual-channel Class-D amplifier—into one long, narrow board that can slide inside the temple arm. The space I have measured is roughly 80 mm × 15 mm, so the layout has to be linear rather than squarish, with components placed to keep the height profile as low as practical. The board will run exclusively from the host’s 5 V USB rail; no batteries or additional supplies are planned. Because this is for voice prompts and basic media playback, a standard-grade codec is fine—I’m not chasing audiophile specs, just dependable microphone input and clean stereo output that won’t hiss or pop when the amp is idle. A...

I need an experienced PCB designer to edit an existing single-sided PCB design. The current design is in Altium and requires modifications for testing and validation. Requirements: - Change component placement - Route traces Ideal Skills and Experience: - Proficiency in reading and editing Altium - Experience in PCB design, especially for testing purposes - Attention to detail and precision Please provide examples of previous work.

I need help turning three off-the-shelf modules now sitting in my glasses prototype—a USB 2.0 hub, a USB audio codec (mic plus stereo out) and a dual-channel Class-D amplifier—into one long, narrow board that can slide inside the temple arm. The space I have measured is roughly 80 mm × 15 mm, so the layout has to be linear rather than squarish, with components placed to keep the height profile as low as practical. The board will run exclusively from the host’s 5 V USB rail; no batteries or additional supplies are planned. Because this is for voice prompts and basic media playback, a standard-grade codec is fine—I’m not chasing audiophile specs, just dependable microphone input and clean stereo output that won’t hiss or pop when the amp is idle. A...

I’m building an educational, IoT-enabled play mat designed especially for children aged three to five. When a child steps, taps or sits on different zones, I want the mat to recognise the interaction and trigger playful learning responses—lights, sounds or messages sent to a companion mobile app. Here’s what I need from you: • Hardware logic so each zone on the mat can reliably detect pressure or touch and send that data wirelessly. • Firmware that converts those raw sensor readings into tidy, low-latency events the app can understand. • Simple proof-of-concept software (mobile or web) that shows the events, plays a sound or displays a visual so I can demo the core learning activities. I’m open on the exact platform; ESP32, Raspberry Pi Pico W ...

I have the final artwork for our Pacedall Core Series – Release One (Black & White editions) and now need an experienced Zepp OS developer to turn it into a polished, store-ready watch face for the Amazfit Bip 5. What you will build • One package containing two colour variants (black and white). Along with AOD. • Time plus date only—no additional complications, animations, widgets or tap shortcuts, plus Pacedall name branding. • Exact typography: the font file I supply must be embedded and rendered faithfully on device. • Code and assets engineered for very low power draw; I expect battery usage on par with Amazfit’s stock minimalist faces. Scope of work – Implement the layout exactly as per the supplied screens. – Optimise im...

I need a production-ready wake-word model that reliably responds to “Hey Bobo” on both ESP32 and Raspberry Pi boards. Accuracy is critical: in a moderately noisy room it should trigger every time someone clearly says the phrase, yet ignore most unrelated speech. I still want slight phonetic wiggle-room—utterances such as “hello bo,” “hey bebo,” or “hello bebo” should wake the system as well—so fine-tuned threshold settings and a well-balanced dataset will be essential. What I expect from you • A trained wake-word model or firmware that runs in real time on ESP-IDF for ESP32 and on Raspbian/Ubuntu for Raspberry Pi without requiring cloud calls. • Demo code that shows how to load the model, stream audio from an onboar...

Description Of Project - HRID-AI is a low cost handheld device aimed at estimating ejection fraction using multimodal biosignals (ECG, seismocardiography, and cardiac acoustics). It uses a combination of biosensors to detect abnormalities in ECG, presence of abnormal heart sounds and their interpretation as well as usage of seismocardiographic signals to provide an estimate of Ejection Fraction. The principle has been verified through multiple studies done in reputed institutions The goal is rapid point-of-care triage for echo referral in emergency and low-resource settings in patients of Heart Failure with Reduced Ejection fraction We need your support, skills and expertise for sensor integration, embedded design, signal acquisition. Current Status- We have so far been able to dev...

I need a complete driver—both hardware interfacing notes and production-ready firmware—that talk to and power a 24-bit parallel RGB888 TFT LCD for displaying ONLY one colour across the entire screen at time. Scope • Hardware side: deliver a working MVP prototype driver for the display Maxen MX-B10HR501K-IS23 (datasheet attached), plus a concise schematic and BOM I can drop into Altium. • Firmware side: deliver clean, well-commented C/C++ code that initializes the panel, streams frame data at full 24-bit depth, and exposes a callable colour-calibration routine. Key requirements • Works with a standard RGB888 timing spec (VSYNC, HSYNC, DE, PCLK). • Runs on STM32 and TPS651 (Open for sugestions). • Colour calibration must let me adjust gamma an...

I need someone to configure a Telematics FMC650 device. The device should display information from the CANbus and allow control of a PLC via a desktop interface. Requirements: - Display the following CANbus data: - Engine performance data - Vehicle diagnostics - Fuel consumption - Control PLC with customized logic - Web-based interface for control Ideal Skills and Experience: - Experience with Telematics FMC650 - Knowledge of CANbus systems - PLC programming and control - Web interface development

I'm looking for a developer to create a set of VR smart glasses that integrate seamlessly with a pocket phone. All hardware should be contained within the pocket device. Key Features: - Display: VR (Virtual Reality) - Functionality: All smartphone features - Essential Features: Messaging & calls, internet browsing, camera & photos, and access to all apps Ideal Skills and Experience: - Experience in VR technology development - Proficiency in mobile app integration - Strong background in hardware-software integration - Knowledge in developing secure and efficient communication protocols Please provide examples of similar work done.

I need a self-contained unit that lets me key a number on a small touch screen and see that exact value appear instantly on a free-standing LED numerical tower. The goal is true plug-and-play functionality: once mains power is connected, the system should be ready without additional setup, drivers, or calibration. Core requirements • Input: a touch-screen number pad that accepts whole numbers (ideally up to four digits). • Display: an LED tower that shows the number in bright, easily readable digits; the tower must refresh in real time as I enter or change the value. • Form factor: bench-top or floor-standing, compact enough for shop-floor use, with a single power lead and a secure data link between screen and tower. • Reliability: stable operation for 8+ hours...

Oil pipelines are commonly buried 3–5 feet beneath riverbeds to protect them from environmental exposure and mechanical damage. However, riverbed scour and sediment transport during floods or strong flow events may remove sediment and potentially expose the buried pipeline. Continuous monitoring of riverbed elevation is therefore essential to ensure pipeline safety and to understand sediment dynamics. This project proposes a Smart Rock monitoring system designed to measure riverbed scour and elevation changes. Each Smart Rock contains an embedded absolute pressure sensor that measures water pressure to estimate local water depth. By combining these measurements with the absolute water surface elevation, the absolute elevation of each Smart Rock can be determined. Since the pipeline ...

I need an experienced PCB designer to edit an existing single-sided PCB design. The current design is in Altium and requires modifications for testing and validation. Requirements: - Change component placement - Route traces Ideal Skills and Experience: - Proficiency in reading and editing Altium - Experience in PCB design, especially for testing purposes - Attention to detail and precision Please provide examples of previous work.

PROJECT SUMMARY: I need an experienced RF/NFC hardware engineer to design a compact, modular 4×4 NFC sensor array board. The board will be used to detect and identify NFC-tagged objects placed on a flat surface (e.g., industrial tray, logistics sorting grid, or interactive tabletop application). Multiple boards (up to 6) will be tiled together to cover larger surfaces. Each board must detect and report the UID of ISO 14443 and ISO 15693 NFC tags placed on any of its 16 positions, within 500ms scan time for the full array. This is not a greenfield project. I have an existing but non-functional 6-layer PCB design (EasyEDA source files available) that attempted this with an ST25R3916B, STM32L476, analog multiplexers, P-MOSFETs, and PIN diodes simultaneously. The design is overenginee...

Embedded Hardware & Firmware Expert Needed for Industrial 3-Phase Pure Sine Wave Inverter Project Overview: I am seeking an experienced Power Electronics and Embedded Systems Engineer to design the hardware and firmware for an Industrial-Grade 3-Phase Pure Sine Wave Inverter. The project involves designing multiple PCBs (MCU Motherboard, IGBT Driver, Thyristor Driver, and Sensing Interface) and developing robust firmware for system control, monitoring, and HMI integration. 1. Hardware Specifications & PCB Requirements: You will be responsible for designing the following industrial-grade PCBs: • MCU Motherboard: Based on Texas Instruments (TI) or Microchip architecture. Must handle PWM modulation and system logic. • IGBT Driver PCB (3-Phase): Industrial grade, optimized fo...

I am looking for an embedded systems developer to write Arduino code to communicate with the MCP3903 energy measurement IC from Microchip using the SPI interface. The goal of the project is to read voltage measurements from three channels of the chip and output the values through the Arduino serial monitor. Hardware: Arduino board (Arduino Uno or compatible) MCP3903 analog front-end IC SPI communication Requirements: The code should: Initialize SPI communication between Arduino and the MCP3903. Configure the MCP3903 registers correctly for basic operation. Read measurement data from the following channels: CH0 CH1 CH2 Convert the raw ADC data into readable voltage values (or at least raw measurement values). Print the measured values continuously to the Arduino Serial Monitor...

I want to build a small, self-contained charging station that wakes up only when it “sees” a bottle and a can. The core will be an Arduino (any recent 32-bit board is fine) tied to a solar panel and battery pack. A lightweight AI vision module or camera running something like TensorFlow Lite or OpenCV should continuously—or on a duty-cycled basis—look for bottles. The moment a bottle is detected, the system must move straight into the charging routine without waiting for external confirmation; no alerts, no logging, just automatic activation. What I need from you • Complete Arduino firmware that integrates the vision trigger with the charge-controller logic. • A schematic / wiring diagram showing how the camera, solar panel, charge controller, and any...

**Project Title:** ESP32 Based Educational Robotics PCB Design **Project Description:** I am looking for an experienced PCB designer to design an educational robotics development board. The board will be used for teaching robotics, IoT, and programming to students . The board should be based on an ESP32 module and must integrate multiple components and connectors so students can easily connect motors and sensors. The board should also be compatible with Scratch, so students can control the hardware using Scratch blocks. The freelancer should also create the required firmware or extension file needed to connect the hardware with Scratch. **Key Features Required:** 1. ESP32 module for WiFi and Bluetooth connectivity 2. Motor driver for 2 DC motors 3. Battery connector for rechargeable L...

We are looking for a Senior Embedded Software Engineer with strong experience in Telecom/O-RAN to work with us on a client project. The role involves development, optimization, and maintenance of embedded software components in a Linux environment, with a focus on performance, reliability, and clean code. Responsibilities: Design, develop, and maintain embedded C/C++ modules for telecom/O-RAN systems Work on Linux-based environments, including debugging, optimization, and performance tuning Integrate and test software components within existing telecom infrastructure Collaborate with our internal engineering team and client’s technical team Write clean, maintainable, and well-documented code Participate in code reviews and propose improvements Requirements: Strong hands-on e...

I have an ESP32 dev board on my bench and need it turned into a compact sensor hub. The entire focus is sensor integration—specifically motion & proximity plus light & sound. Some of the devices will be hard-wired to GPIO pins while others should connect wirelessly, so the firmware must handle both connection paths seamlessly. Here’s exactly what I need delivered: • Well-commented source code (Arduino-ESP32 or ESP-IDF) that polls each sensor, filters noise, and publishes readings over Serial and MQTT. • A clear wiring / pin-out diagram for the hard-wired sensors. • Configuration notes that let me pair or re-pair any wireless sensor modules. • A short README covering library installs, flash commands, and expected output. Acceptance criteri...

PCB Design Requirement Project: BLE to Wi-Fi/Ethernet Gateway Device. The objective of this project is to design a BLE to Cloud Gateway device that integrates: - Nordic nRF52840 (BLE receiver) - HLK7628N Wi-Fi / Ethernet Linux module The device continuously receives BLE packets, forwards them to the HLK7628N through USB, and uploads the data to the cloud over Wi-Fi or Ethernet. When internet connectivity is lost, incoming data will be stored locally on an SD card using a rotational buffer mechanism, and synchronized automatically once connectivity is restored. The design must follow best practices for RF layout, impedance control, EMI mitigation, and grounding, enabling FCC and CE certification. The HLK7628N module and nRF52840 chip are fixed components and must remain in the desig...

Project Brief: Kinetic Pulse PCBA 1. Core Functional Requirements Power Input: Must accept AC input from a linear induction coil (approx. 3,000 turns). Energy Storage: Must use a Supercapacitor (1.5F - 2.0F / 5.5V) as the sole energy storage—No chemical batteries. Power Regulation: A boost converter must provide a stable 3.3V rail even as the capacitor discharges down to 0.7V. Power Efficiency: The entire system must be "Nano-power." Total standby/idle current must be < 1µA to ensure the device holds a charge. Timing Logic: An internal timer must trigger a 100ms audible alert (Buzzer) every 40 seconds. Pressure Sensing: The system must interface with a Force Sensitive Resistor (FSR). State 1: Visual Green LED alert when pressure is applied (> 50g). State 2: Visu...

I’m putting together a very small-scale project on an Arduino Uno and simply need a clean, well-commented sketch that switches an LED on and off. No elaborate libraries or peripherals—just straightforward LED control that compiles in the current Arduino IDE and can be uploaded over the standard USB cable. What I expect from you • An .ino file that drives either the onboard LED (pin 13) or an external LED on any digital pin I can redefine at the top of the sketch. • Clear inline comments explaining each step so a beginner can follow the logic and reuse the code in future experiments. • A short read-me noting the exact IDE version you compiled with and the wiring diagram if you choose an external LED. That’s all—simple, reliable, and ready to ru...

Project Overview: We are developing a motor controller PCB for an educational differential-drive mobile robot used in university teaching and research. The board is based on a validated prototype with proven firmware, and we now need a production-quality PCB designed for manufacture and CE/UKCA certification. A detailed hardware specification document will be provided to the selected designer. This brief summarises the scope and complexity of the project. Board Function: The board controls two DC gearmotors with closed-loop velocity control, monitors battery voltage, manages safety systems (emergency stop, timeout, heartbeat), and communicates with a host computer or single-board computer over USB. It also provides regulated power to downstream devices via a USB-C Power Delivery source po...

I need an expert to overhaul the control electronics on our solid swimming pool cover and modify the control circuits. The goal is to improve existing functionality and enhance automatic cover operation. Key tasks include: - Improving existing control circuits - Enhancing automatic cover operation Ideal Skills and Experience: - Proficiency in electronics and control systems - Experience with automation and control circuit modification - Knowledge of pool cover or electric gate systems - Strong problem-solving skills

I want a simple two-channel radio link that can do just two things reliably: 1) vary the speed of my brushless DC motor through its ESC (accepts S-Bus or standard PWM) and 2) toggle a single relay on or off. Hardware • I already have the motor, ESC, and relays. • You may choose Arduino, Raspberry Pi, or any Adafruit board—use whichever keeps the build small, inexpensive, and stable. Radio requirements • The handheld transmitter must let me select the operating band with a physical switch: 2.4 GHz, 900 MHz, or 433 MHz. • If LoRa is the cleanest way to hit those bands, great—just make sure the LoRa hop gives me at least a 1 000 ft (≈300 m) clear-line range. Long-range reliability is more important than data rate or extreme power savings...

Project Objective: Develop a 100% functional, industrial-ready prototype of a wearable holographic smartphone (bracelet). The goal is high-end performance (Mid-range Samsung level) with zero wasted costs on software licenses. I need a perfect balance between high-quality optics and cost-optimized hardware. ​Core Hardware & Memory: ​Processor: RK3566 (Optimized for performance/thermal balance). ​Memory: 8 GB RAM and 128 GB Storage (Must be fast and reliable). ​Holographic Engine: Hybrid Laser/Optical system with Japanese DCRA plates. Target: Sharp 6-inch floating image at 15cm distance. ​Sensors: Full sensor suite (Ambient Light, Proximity, GPS, Gyroscope) for a 100% smartphone experience. ​Zero Extra Costs & Quality Optimization: ​Software: Use Open Source Android (AOSP) + Google S...

I'm looking for an experienced PCB designer to create a single-layer PCB for a consumer electronics radio application. The PCB will need to incorporate sensors. Key Requirements: - Design a single-layer PCB - Application: Consumer electronics (radio) - Must include sensor components Ideal Skills and Experience: - Proficiency in PCB design software - Experience with consumer electronics, especially radio devices - Strong understanding of sensor integration on PCBs - Attention to detail and ability to meet deadlines

I am building DigitScale IA, a dedicated body-composition scale that goes beyond mere weight and zeroes in on bone density. The goal is a standalone hardware device—complete with its own enclosure, sensing module, firmware and simple companion interface—that can provide reliable, non-invasive bone-density readings each time a user steps on it. Your expertise in sensor selection, PCB design, firmware development and calibration will shape the entire product. Feel free to propose capacitive, impedance-based, ultrasound or hybrid approaches; accuracy and repeatability are the metrics that matter most. Bluetooth LE connectivity is preferred so users can pull their data into a mobile app later, but a basic on-device display will suffice for the first iteration. Deliverables &b...

We are building a solar-powered, low-power IoT field device used outdoors in orchards. We need an experienced PCB design engineer to develop a custom PCB that integrates and reliably powers the system. Scope (PCB only): 1) Schematic + PCB layout for a low-power embedded system 2) Power design: solar charging + battery management, stable rails, protection, brownout handling, and power-path switching 3) Interfaces for MCU + peripherals (camera, GNSS, cellular modem, temp/humidity sensor, RTC/power scheduler) 4) Connector selection, ESD/weather-related protection considerations, test points, and design for manufacturability Deliverables: production-ready Gerbers, BOM, pick/place, schematic, and design files (KiCad/Altium—your preference) Nice to have: Prior experience with solar/batt...

Project Brief: Kinetic Pulse PCBA 1. Core Functional Requirements Power Input: Must accept AC input from a linear induction coil (approx. 3,000 turns). Energy Storage: Must use a Supercapacitor (1.5F - 2.0F / 5.5V) as the sole energy storage—No chemical batteries. Power Regulation: A boost converter must provide a stable 3.3V rail even as the capacitor discharges down to 0.7V. Power Efficiency: The entire system must be "Nano-power." Total standby/idle current must be < 1µA to ensure the device holds a charge. Timing Logic: An internal timer must trigger a 100ms audible alert (Buzzer) every 40 seconds. Pressure Sensing: The system must interface with a Force Sensitive Resistor (FSR). State 1: Visual Green LED alert when pressure is applied (> 50g). State 2: Visu...

I'm looking for an experienced developer to build a weather monitoring system using a Raspberry Pi Pico. The system should interface with an RM Young 05108 Anemometer to measure wind speed and direction, as well as a temperature and pressure sensor. Requirements: - Use I2C for data transmission - Utilize an OLED display to visualize: - Wind speed and direction - Temperature and pressure - All data on one screen Ideal Skills & Experience: - Proficiency with Raspberry Pi and I2C communication - Experience with OLED displays - Knowledge of weather sensors and data integration - Strong programming skills, preferably in Python Please provide samples of previous similar work.

I have a Mediatek 8168-based tablet (board ID tb8168p1_bsp, retail model Score 7T). I can put the device into BROM mode with mtkclient and it identifies as “SBC enabled = true”. What I need now is a fully working Android build custom-tailored for this hardware and a reliable procedure to get it flashed onto the tablet. The goal is a clean, stable Android ROM—version is flexible, so feel free to recommend the best fit for MTK 8168 in terms of driver support and security updates. I do not yet have a suitable ROM image, so I’m looking for someone who can build or port one from source (AOSP or other open-source base) and walk me through flashing it. Key deliverables • Bootable Android system image (system, vendor, boot, dtbo, vbmeta, etc.) compatible with tb816...

pressure transducer # 85CV 030A FCA1396 32613 013 1129 Amplifier:TL972P I need someone who understands Arduino Boards and Python to successfully work on a Pressure Transducer. I have attached my current code and setup with an amplifier do your research I need this thing to work. For your linear actuator balloon system (IABP capstone setup), the pressure transducer’s goal is to measure the pressure generated in the balloon or fluid line during actuator motion. Core Purpose The pressure transducer converts fluid pressure → electrical signal so your system can monitor what the actuator is doing. What this lets you verify The sensor is mainly used to confirm that the system works correctly. Verify balloon inflation Pressure should rise when the actuator compresses the ...

I need help setting up a flow monitor that uses an ESP32 microcontroller device. This device needs to communicate with a Wi-Fi hub and send data to an app on both Android and iOS platforms. Requirements: - Communicate with a Wi-Fi hub - Send volume data per designated time period - Compatible with both Android and iOS apps Ideal skills and experience: - Experience with ESP32 and microcontrollers - Proficiency in Wi-Fi communication protocols - Mobile app development (Android and iOS) - Knowledge in data transmission and monitoring Please provide your past relevant work experience and approach to complete this task.

Please be careful, you must create the 3 real PCBs; we are not interested in virtual projects. After the 3 PCBs have been successfully tested here in our office, we will release the money following the rules of freelacer.com. I will agree on the cost of the work and the time of execution with the developer. I've already built some prototypes of a circuit capable of switching a single 230 V, 16–30 A line to 4, 8, or 12 outputs—without power loss—but none of them have reached the standards I expect. I have schematics, calculations, thermal measurements, and test logs: enough material to clarify every technical detail and speed up your work. I need a senior designer who can transform all this into a final solution, complete with ESP32 firmware, a multilayer PCB (4 or...

We are seeking a highly skilled Mechatronics & Embedded Systems Engineer responsible for motor calibration, mechanical-electronic system integration, PCB quality enhancement, firmware optimization, and robust communication architecture development. The role demands strong cross-disciplinary expertise in electromechanical systems, embedded firmware, and wireless communication protocols. This position requires hands-on execution capability, system-level thinking, and ownership from prototyping to validation. --- Key Responsibilities 1. Motor Control & Calibration - Calibrate and tune BLDC motors (FOC / trapezoidal control). - Develop and optimize motor control algorithms. - Perform current sensing, torque tuning, PID optimization, and efficiency improvement. - Analyze motor performa...

I need a working prototype of a compact pool-cleaning robot designed, built, and shipped to Pune by 20 March. Its two core tasks are debris collection across the pool floor and reliable wall-climbing so it can scrub and vacuum vertical surfaces as well. The unit must run on a rechargeable battery pack—no cords in the water—and be steered with a simple handheld RF remote (forward, reverse, left, right, start/stop). A smartphone app or timer isn’t necessary; keeping the hardware lean is key because the entire build, plus packing and freight, must stay within an 18 k INR ceiling. I’m open to clever use of 3-D printed housings, sealed brushed or BLDC thrusters, and readily available filters to hit that cost target while ensuring waterproof integrity. Good buoyancy cont...

Design Brief: High-Reliability Bluetooth Roadbook & Multimedia Controller Project Code: RALLY-MEDIA-V3 Target Platform: PCBA (Automotive / Rugged Environment) 1. Project Vision The goal is to create a high-performance, ultra-compact Bluetooth Low Energy (BLE) controller for motorcycle navigation (Roadbook) and multimedia. The device must replace high-end commercial modules (like Rallyable) with a custom, cost-effective solution that survives the electrical noise and physical vibration of off-road motorcycles. 2. Scope of Work The engineer must provide a complete PCB design (Schematic + Layout) optimized for JLCPCB SMT Assembly Service. Two design paths are considered: Path A (Integrated): Full custom PCB with nRF52840 SoC and tuned antenna. Path B (Carrier/Baseboard): A "Shiel...

I am building a fully-autonomous vacuuming robot around a Jetson Nano and a 3-D LiDAR and need an experienced ROS 2 developer to take it from a proof-of-concept chassis to a reliable household machine. Core capabilities I’m after • Vacuuming as the single cleaning function • ROS 2 Navigation stack for path planning, live re-planning and return-to-dock • Real-time obstacle avoidance fused from the LiDAR and the onboard IMU • SLAM or comparable mapping so the robot can save, edit and reload floor maps between sessions The hardware is already on hand: Jetson Nano, 3-D LiDAR, motor controller, wheel encoders, IMU and a basic suction module. Your job is to wire up the software side, tune the parameters for smooth coverage, and expose a simple YAML/JSON config...