ESP32-S31 rotary encoder with 1.8-inch touchscreen display
cnx-software.com/2026/10/22/…
GUITION JC3636F118C-I-YR1 knob features an ESP32-S31NRV16 WiFi 6, Bluetooth 5.4, and 802.15.4 SoC with 16MB of PSRAM, 16MB SPI flash, a speaker, a microphone, and an optional rechargeable battery.
The built-in firmware includes a clock, a countdown timer, a music player, an MJPEG/AVI video player, a photo frame function, a spectrum analyzer, Bluetooth/USB audio, and USB HID support. A ZIP file is provided with the source code (ESP-IDF only for now), documentation, and PDF schematics.