Epaper Digital watch using an ESP32 Tinypico

thingiverse

This is a "deepsleep" ESP32 digital wristwatch. If you need to adjust the strap size just send me a message. I built this with the remains of a Pebble dead watch. Sponsored by epaper component Cale-idf https://github.com/martinberlin/cale-idf. If it's built using a Tinypico.com ESP32 then it should last up to 3 days with an 80 mA battery, provided it connects only once per day to sync time with WiFi. Please note that the Firmware is based on ESP-IDF and won't work with Arduino framework. For more information and previews check the following page: https://github.com/martinberlin/cale-idf/wiki/Demo-epaper-clock. [Short Twitter video](https://twitter.com/martinfasani/status/1284184033900072961). Two options for the ePapers, both 200x200 pixels resolution: Waveshare 1.54 and Heltec 1.54. Mind setting the right class when you compile it using ESP-IDF, also doing a idf.py menuconfig And adjust display configuration to match the connected ESP32 SPI Gpios. Keep in mind that it's always safer to use the HSPI pins: CONFIG_EINK_SPI_MOSI=23, CONFIG_EINK_SPI_CLK=18 and CONFIG_EINK_SPI_CS=5. If you want to forget about checking if they support output, this ones will work; if it does not, then there is something wrong or the selected class does not match your EPD model.