u/zlej_slein

I have a heltec t114 v2.1 but my BT connection signal is dropping after a meter. Is this normal? Or what to do about it?

I will add an expandable keyboard with a TCA8418 control chip, just like the original M5STAMP ADV - it allows you to connect up to 80 buttons using a grid. The ESP32S3A itself has a USB that can be used as a host and device, so charging and reading a flash drive is possible. A rich pinout will take care of other expansions such as an SD card reader or a LoRa module. In the construction, I will try to keep as much of the original cardputer construction as possible, just make everything smaller.

I want to build my own node. I use NRF52840 pro micro, lora module DX-LR30 sx1262 868MHz, TFT 135x240. power supply now I don't know how to connect the main components