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.
One of the main uses of these is household displays for things, including environmental monitoring. So the NFC based panel controller board has...
- 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.
- WAGO contacts for DS18B20 temperature sensors.
- Updated WS2812 LEDs that don't get easily knocked off the board.
This adds some cost, but I think makes for a pretty awesome controller.
What do you think?
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