3 PCB Designs for Prototype Production / fairly rudimentary and well documented

I am looking for a PCB designer who can turn my 3 sketches into technical drawings so that I can have these 3 prototypes produced. (The one who does this job (well) will get approx. 1-2 other jobs after this is done)

PCB #1 power distribution -converter -ups -analogue_timed_switch

PCB #2 analogue data distributor

PCB #3 data and power distributor

For each board there is a separate sketch of the layout and connectors, I provide this as .eps .pdf and as printable A3/[login to view URL]; for better understanding, each board comes with an illustrated [login to view URL]

To the functions of the individual boards:

PCB #1 power distribution -converter -ups -switch

- In front of this board is a fuse (therefore not included);

- The 240V current will be directly led to a plug and a terminal

- The 240V power must then be converted to 12V to charge a battery (12V approx. 10Ah [fuse required?]) which will act as the ultimate power supply (UPS) for the rest of the circuit.

- After the UPS one line of the 12V power is connected to a plug (approx. 3A/36W)

- Additional 3 individual slots for PC fans (approx. 0.3A/3.6W each, 3 Pin Molex 22-23-2031]) are powered (tachometer signal is irrelevant)

- The 12V current must be converted to 5V afterwards

- One line of the 5V current is led to a plug (approx. 10.8A/54W)

- A further line is routed to an "analogue timed switch" (below), from which 2 plugs (A/B) must be operated (approx. 5V/3A each)

# Analogue timed switch

1 - Gets a plug for a button

2 - This 'self-developed' switch should only power one of the two connectors (A/B) at a time

3 - As soon as the button (1) is pressed, the switch should give a signal to the active port ([A]/B), wait 120 seconds, then cut the power supply from the current port and feed the other port (A/[B]). And vice-versa. It doesn't has to remember the last active port (only if that's no hassle to realize)

= Only one RaspberryPi at a time will be powered by GPIO from the A/B ports, they must never run simultaneously.

PCB #2 analogue data distributor

Two RaspberryPi4 are connected to this board, but only one is running at a time; both must have access to the same peripherals.

PCB #3 data and power distributor

Distributes power and data from different connections.

Technical details such as the safety of the conductor paths for different voltages and the individual components to be used to realize the requirements are the task of the freelancer.

I rely on a proper implementation of the UPS and the analogue timed switch.

The circuits (especially PCB#1) have to be protect against over/under-voltage, over-temperature and against short-circuit. Appropriate PIN Connectors/Terminal blocks should be chooseand have 'securing-clips' so they won't come loose.

The boards do not necessarily have to be tiny, but one should consider production costs.

The connections should be at the positions as shown on the sketches, but this is only for orientation they don't refelct any dimensions (except PCB#3 bottom and right side). The labels should obiously be printed on the PCB.

As said I'd have 1-2 follow-up jobs, additionally to the production of the cables.

Happy to hear from you and to negotiate

Best regards,


Kemahiran: Susun Atur PCB, Elektronik, Kejuruteraan Elektrik, Rekabentuk Produk, CAD/CAM

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Tentang Majikan:
( 0 ulasan ) Bolzano, Italy

ID Projek: #27513668

20 pekerja bebas membida secara purata $323 untuk pekerjaan ini

(57 Ulasan)

Hello, thank you for your job posting. I read your description about--PCB I am a senior electrical engineer. I have plenty of experience in firmware development and micro-controller developments. I can write the firmwa Lagi

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$500 USD dalam 7 hari
(14 Ulasan)

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$450 USD dalam 2 hari
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I have read your description and understand everything. I will design your board by using Altium. I will place component at necessary place in board. Since I have large library which is done by XBL files, it is no mist Lagi

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