What is EasyLoader?
SD-UPdater for M5StickC is below.
matsumo / M5StickC-SD-Updater
https://github.com/matsumo/M5StickC-SD-Updater
What is EasyLoader?
SD-UPdater for M5StickC is below.
matsumo / M5StickC-SD-Updater
https://github.com/matsumo/M5StickC-SD-Updater
I had also a closer look at the PCB and recognized a "missing" component near the RESET button:
The part is C44 100nF.
Removed on M5Stack Fire to prevent Nois.
See below.
Parts arrangement of M5Stack
https://macsbug.wordpress.com/2020/04/01/parts-arrangement-of-m5stack/
The MAX40200 is a great idea.
The following information may be helpful.
Cannot write to M5StickC on macOS Catalina :
https://qiita.com/SamAkada/items/fa32d6072a832a10cd84
How to solve the problem that M5StickC can not be written with Arduino IDE of macOS Catalina :
https://tech.fusic.co.jp/posts/2020-02-12-macos-catalina-m5stickc/
There is a way to attach a diode to the Battery Module.
Blog:USB Cable and Reset prevention
https://macsbug.wordpress.com/2020/04/07/usb-cable-and-reset-prevention/
Level converter is required for connection.
resistor to connect
Meter PZEM-004T with Arduino ESP32 ESP8266 Python & Raspberry Pi
Modification TTL UART from 5v to 3.3v
http://pdacontrolen.com/meter-pzem-004t-with-arduino-esp32-esp8266-python-raspberry-pi/
level converter to connect
Measuring home energy consumption with the PZEM004T and ESP8266
https://primalcortex.wordpress.com/tag/pzem004t/
There is a similar question below.
http://forum.m5stack.com/topic/1454/m5stick-oled-cant-turn-on