Please bid only if you are expert in the required skills.
Already existing alarm system, with a main board and an attached 2nd board based on sim900 needs reprogramming of 2 ics or replacing, modification, and generally all corrections ion in respect of the SIM900 operation to make it work add more features and commands of sim900.
The bidder must re-program an IC on u1 in the main board and another one IC on the sim board and ensure that all parts of the alarm in respect of SIM900 works perfectly.
If its required the ICs could be replaced with another of the same mcu ic. Programming or Re-programmed with new firmware as per our needs is essential and required.
Replacement of existing MCU and other parts is welcome upon suggestion as long as the alarm will work correctly in the end.
The bidder can even provide a whole new designed PCBA sim900 instead of modifying the one provided as long as it’s of the same size and pins as the one provided so can be plugged into the main board and the alarm as a whole unit will work as per our requirements.
Bidder has to provide that solutions and make the existing or a new similar device working with more features via AT commands as per my requirements. Schematics and BOM of the PCBA/gsm900 part must be provided and also gerber files (not for the whole alarm but for the sim900 PCBA part and its connection with the main board).
More details will be discussed personally.
14 pekerja bebas membida secara purata $595 untuk pekerjaan ini
Rich Experience of 9.5 Years in GSM/GPRS communications using AT commands on SIMCOM modems. Wrote application software in C,Python. Can do the job in committed time.