Ardino IDE https://www.arduino.cc/en/software
ATTiny library https://github.com/SpenceKonde/megaTinyCore
UPDI progammer https://github.com/ElTangas/jtag2updi
ATTiny1604
Magnet Connectors https://aliexpress.bitluni.net/magnetConnectors
WS2812D 5 & 8mm https://aliexpress.bitluni.net/ws2812d
https://github.com/sponsors/bitluni
have fun & thx for the support