I have stock of some very nice Waveshare 7.5" E-paper panels with bonded glass and black border. They are very cool. I made a driver board to fit on the back, and it works well. It is on Tindie.
I then made a new board with NFC reader through the glass which is very cool. I use for access control on the front door. But I think it can work as a card and so work as a WiFi NDEF NFC even - need to work on code for that.
But I am working on the next version, and am interested in comments.
- ESP32-S3-MINI-1-N4-R2 (Dual CPU, 4M flash, 2M SPI RAM).
- E-paper panel controller and power, obviously.
- Micro SD card slot.
- Power from USB-C (two positions) or WAGO DC 5V-17V.
- Designed to work with button-fix clip on the back to mount easily on a wall.
- 24 WS2812 RGB LEDs around the edge, plus one for status by SD slot, and one general status.
- 2 pin WAGO contact input (e.g. for doorbell push).
- PN532 NFC compatible with DESFire, and can work as a card to NDEF WiFi details, etc.
- Separate WAGO power and control for PN532, and connected internally to allow local working.
But the new bits are...
- SCD41 CO₂ and humidity (and temperature).
- SHT40 temperature.
- GZP6816D atmospheric pressure.
- T3902 MEMS microphone for sound.
- DS18B20 connection for external temperature sensors (WAGO).
- Updated WS2812 LEDs that don't get easily knocked off the board.
- Switched power control for PN532.
- Switched power control for E-Paper.
- Switched power output 3.3V (WAGO)
This adds some cost, but I think makes for a pretty awesome controller.
What do you think? (Update - I have ordered some)
