3 ms·
TOTPs are amazing! I'm currently building a low-power, offline ESP32 device that generates time-based one-time QR codes and displays them on an e-ink screen. I
by tomtomistaken 2y ago
TOTPs are amazing! I'm currently building a low-power, offline ESP32 device that generates time-based one-time QR codes and displays them on an e-ink screen. I plan to use it for proof of presence.
- Rygian 2y agoWhat's your approach for keeping the clock in sync?
- tomtomistaken 2y agoI use a GPS module that turns off once it has retrieved the time and location.
- tomtomistaken 2y agoHere is a short breakdown of the project: https://github.com/sweing/TOTP-QR-Gen/blob/main/post.md https://github.com/sweing/TOTP-QR-Gen/blob/main/post.md