Update: Starter Arduino IDE code here: https://github.com/supaplextor/arduino-esp-sketches/tree/master/esp32/FINGER_FPC1020A - could work for other grove ports talking serial. (m5atom grove etc)

• Earlier:

I have an M5stickC and a groove cable to a Finger unit. It usually times out. The first change I did was remove the buttonC code ported from the M5stack examples, and use the header for M5StickC.h instead. I've tried something similar on an atom lite, with the same issues. Cannot add a user, it timesout. No users registered on the chip so far.

Adjusted FirstLight example, 6812 neopixel, code line: FastLED.addLeds<SK6812, DATA_PIN, RGB>(leds, NUM_LEDS); // GRB ordering is typical

ATOM Lite ESP32 IoT Development Kit

SKU:C008 - See bottom pic of product. https://m5stack.com/collections/m5-atom/products/atom-lite-esp32-development-kit

Another thread says it's use the FastLED library (LED in the button I presume), and the schematic says it's gpio 27 http://docs.m5stack.com/#/en/core/atom_lite

I'm looking for a sketch of what's shipped out, running on my new atom 2 lite right now. Thanks!