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Thanks for that, pjmelect - the reference diagram I was using was dated 2016, and I've just read about the ESP8266 firmware being updated to enable the internal pullups. I'll make that change.
Thanks KlausST; I've added some ESD protection diodes on signals lines (RX/TX, SDA/SCL), and some...
Thanks KlausST, I appreciate you taking the time to provide detailed feedback!
To answer your questions:
H1 is intended to be a UART connector, for programming the ESP8266 in the absence of a CP210x, etc. The idea is that the battery would be switced off at SW1, the module would then take 3V3...
Hello all,
I've designed a portable LoRa module, operated by an ESP8266 module, powered by a lipo and recharged over USB-C. Attached is the EasyEDA schematic.
I've spent a few years tinkering with the major components of this design as discrete units (like, a ESP8266 NodeMCU dev board, rather...
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