Summary of NODEMCU ESP32-C3 RISC-V BASED DEVELOPMENT BOARDS, SUPPORTS WI-FI AND BLE
Ai-Thinker released NodeMCU development boards based on ESP32-C3 modules featuring RISC-V processors, Wi-Fi, and BLE 5.0. The article details the ESP32-C3S kit with its specific memory, storage, and interface capabilities, as well as the ESP-C3-01M kit which supports BLE but lacks classic Bluetooth. These boards are available for purchase at a low cost and offer versatile connectivity options for IoT projects.
Parts used in the NodeMCU ESP32-C3S Kit:
- ESP32-C3S module
- RISC-V 32-bit single-core processor
- 400 KB SRAM
- 8KB RTC SRAM
- 384 KB ROM
- 4MByte flash
- UART/GPIO/ADC/PWM/I2C/I2S interfaces
Parts used in the NodeMCU ESP-C3-01M Kit:
- ESP32-C3-01M module
- 32-bit RISC-V single-core processor
- BLE 5.0 support
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.
Read more: NODEMCU ESP32-C3 RISC-V BASED DEVELOPMENT BOARDS, SUPPORTS WI-FI AND BLE
- What wireless connectivity do the Ai-Thinker ESP32-C3 modules support?
The modules support IEEE 802.11b/g/n Wi-Fi and BLE 5.0. - Can I buy the NodeMCU ESP32-C3S kit on Aliexpress?
Yes, the board is available on Aliexpress priced at $8.30. - Does the NodeMCU ESP-C3-01M kit support classic Bluetooth?
No, the ESP32-C3-01M module does not support classic Bluetooth connectivity. - What is the clock speed of the processor in these kits?
The RISC-V 32-bit single-core processor is clocked up to 160MHz. - How much SRAM does the ESP32-C3S module have?
The module features 400 KB SRAM and 8KB RTC SRAM. - What is the maximum speed of the BLE 5.0 on the ESP32-C3-01M?
The BLE 5.0 can speed up to 2Mbps. - Which microcontroller series are the Ai-Thinker modules based on?
The modules are based on the ESP32 MCU series. - What power supply voltage is required for the ESP32-C3S?
The device requires a 3.3V power supply.
