Hardware involved:

ESP32 with TTGO display (flashed with Micropython from Loboris):

• Board: https://www.banggood.com/LILYGO-TTGO-T-Display-ESP32-CP2104-WiFi-bluetooth-Module-1_14-Inch-LCD-Development-Board-p-1522925.html
• Temperature sensor: https://datasheets.maximintegrated.com/en/ds/DS18B20.pdf

Board layout:

Software:

• http://micropython.org/

Uses Loboris MicroPython (esp32_psram_all_bt)

• https://github.com/loboris/MicroPython_ESP32_psRAM_LoBo
• https://github.com/loboris/MicroPython_ESP32_psRAM_LoBo/tree/master/MicroPython_BUILD/firmware

DS18B20 api documentation:

• https://github.com/loboris/MicroPython_ESP32_psRAM_LoBo/wiki/onewire

TTGO api documentation:

• https://github.com/loboris/MicroPython_ESP32_psRAM_LoBo/wiki/display