We have designed a PCB around the STM32F401 + SIM868E. This PCB has been designed in Altium and has some connection issues which needs to be resolved. So in short the PCB design needs to be validated and potentially reworked. Please contact for more information.
49 freelanceria on tarjonnut keskimäärin $483 tähän työhön
Yes I can do this job pretty quickly. I have Altium license to do this job and also have extensive knowledge in hardware designs with STM32 and GSM modules. Let's discuss and will plan the mod quickly. Thanks
Hello, there is a bad idea to place (non isolated) inductance near antenna's working field as well as power switching lines going from Dc-DC ic.. I coud try to provide more accurate design for you /