Imported from GitHub: martinberlin/H-C6-ulp · commit 23392ad · license GPL-3.0

Description

ESP32C6 in a very low power design with a 24 pin FPC for a small SPI Epaper

README

ESP32-C6 ULP mini PCB

This PCB design is based on C6 design guidelines and uses the Buck converter schematic of Seeed XIAO C6 SGM6029

The SGM6029 family is a low voltage, efficient and miniature synchronous Buck converter with ultra-low quiescent current. Operating at high switching frequency (4.0MHz, TYP), miniature inductors and capacitors can be used to achieve minimal solution size.

Using low GPIOs to be able to access them from ULP

IO Description
0 EPD_MOSI
1 EPD_CLK
2 EPD_CS
3 EPD_DC
4 EPD_BSY
5 EPD_RST
6 SCL --> I2C ↘
7 SDA --> I2C connected to RV2032 RTC

Push buttons GPIOs (optional side switches)

IO Description
19 Left  SW1 
20 Right SW2
18 Right SW3

3D-Preview

Last version 1.1:

Failed release v1.0: We forgot to add SPI flash. Oh yeah, you won't flash it!