Bouffalo Labs BL602 is a low-cost, low-power RISC-V microcontroller that offers 2.4 GHz WiFi and Bluetooth 5.0 LE connectivity for IoT projects for about the price of ESP8266. We first discovered it last year, together with a development board.
Pine64 created its own PineCone board fitted with the $2 PineNut module, and some reverse-engineering work has started on BL602 SDK. But there’s now another smaller BL602 module with “Machine Intelligence” (that’s the company name) BL-63B that sells for $1.5 on Taobao in China, as well as on LCSC Electronics albeit you’d need to purchase 1000 pieces to get that price, and single-unit pricing is currently $2.5.
BL-63B WiFI & BLE module specifications:
- SoC – Bouffalo Labs BL602 32-bit RISC-V processor @ up to 192 Mhz with 276KB RAM, 128KB ROM, 1Kbit eFuse, WiFi and BLE
- Storage – 2MB flash
- 2.4GHz 802.11b/g/n WiFI 4 1×1 SISO up to 65 Mbps (802.11n) or 26 Mbps (802.11g)
- Bluetooth LE 5.0
- PCB antenna
- 11 pads and through holes with
- Up to 5x GPIO, UART, ADC, DAC, PWM, I2C, SPI, IR
- 3.3V and GND
- Additional test pads for GND (2x), IO8 and IO5
- Supply Voltage – 3.0 to 3.6V
- Dimensions – 17.3 x 15 x 3mm (DIP-11)
- Temperature Range – -30°C to +85°C
- FCC ID – 2AVTT-BL63B (But it does not show up on the FCC website yet)
There are also reference to TYWE2S with BL-63B module. TYWE2S appears to both be a module form factor and an “RTOS platform that integrates all function libraries of the Wi-Fi MAC and TCP/IP protocols”, and is also used on Tuya‘s ESP8285 module, so BL-63B BL602 module might just be a drop-in replacement with the same pinout and firmware.
Via Lup Yuen Lee (MisterTechBlog)
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.