What can be better than ESP8266 and ESP32? Maybe a battery-powered ESP32-C3 board designed to provide lower power consumption.
LILYGO® has just launched an ESP32-C3 board with a rechargeable 16340 battery holder. The new board, aptly named LILYGO TTGO T-OI PLUS consumes lesser power as its SoC single-core RISC-V processor uses 5uA and 130uA in deep and light sleep modes respectively in contrast to its counterparts’ ESP8266 and ESP32 which consume approximately 20uA and 2000uA in deep and light sleep modes respectively.
The TTGO T-OI PLUS is furnished with the capability of charging the LiPo battery attached through its charging circuit. The board’s battery level can be monitored with software with a few lines of code to read the voltage divider signature on its Pin A0. The board also comes with 3 LEDs — Green (indicates communication over UART), Blue (charging indicator) and Red (always-ON power indicator). A GitHub user who made a little tweak with the board said the Red LED can be killed manually by taking it off with a screwdriver. This tweak however lowered the overall deep sleep current from 1mA to 110uA, which undoubtedly is acceptable if one would like to prevent quick battery discharge.
The TTGO T-OI PLUS board also has the same headers pinout with the T-OI ESP8266 board, so it’s safe to say that both have expansion modules that are compatible.
Read more: MEET ESP32-C3 BOARD ON TOP OF A RECHARGEABLE 16340 BATTERY
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