We recently saw that Ai-Thinker released modules that are based on the ESP32 MCU and support Wi-Fi and BLE 5.0 wireless connectivity. Ai-Thinker has been at the forefront in designing modules on the famous ESP microcontrollers by manufacturing the first series of modules on the ESP8266. Recently, CNX-Software spotted few development boards, integrating the Ai-Thinker modules on ESP32-C3.
One of the NodeMCU boards, the NodeMCU ESP32-C3S kit is built around the ESP32-C3S module featuring a RISC-V 32-bit single-core processor that is clocked up to the frequency of 160MHz with 400 KB SRAM, 384 KB ROM, and 8KB RTC SRAM. The onboard ESP32-C3S module also supports IEEE 802.11b/g/n along with BLE 5.0 wireless connectivity.
Features Of ESP32-C3S:
- CPU: RISC-V 32-bit single-core processor @ 160MHz
- Memory: 400 KB SRAM and 8KB RTC SRAM
- Storage: 384 KB ROM, 4MByte flash
- Wireless Connectivity: IEEE 802.11b/g/n and BLE 5.0
- Interface: UART/GPIO/ADC/PWM/I2C/I2S
- Power supply: 3.3V
More details on the Ai-Thinker module that is fitted on the NodeMCU ESP32-C3S Kit are available in the official datasheet provided by Ai-Thinker. You can buy the board on Aliexpress priced at $8.30.
There are several other boards with one other that caught our eye are the NodeMCU ESP-C3-01M kit that is powered by the 32-bit RISC-V single-core processor that speeds up to 160MHz. The module ESP32-C3-01M also does not support classic Bluetooth connectivity but comes with a BLE 5.0 that can speed up to 2Mbps.