Description
Custom development board built around the genuine ESP32-C3FH4 microcontroller — RISC-V architecture with Wi-Fi and Bluetooth LE, designed and hand-assembled in Portugal.
Microcontroller
- ESP32-C3FH4: 32-bit RISC-V single-core @ 160MHz
- 4MB integrated Flash
- 2.4GHz Wi-Fi 4 · Bluetooth LE 5.0
- Hardware security: AES-128, RSA-3072, secure boot, flash encryption
Board features
- Precision-tuned PCB antenna — reliable 2.4GHz performance, no external components needed
- Castellated holes + 2.54mm through-hole headers — use on breadboard or solder directly onto your PCB as a module
- JST SH 1.0mm I2C connector — compatible with Qwiic (SparkFun) and STEMMA QT (Adafruit) ecosystems
- Addressable RGB LED — debugging, status indication, or user feedback
- USB-C — power and UART programming
- LDO voltage regulator 1A — power from 5V via USB-C or up to 5.5V on VIN
- All available GPIO broken out
- Approximately 50 × 30mm · Designed in PT
In the box
- ACH-ESP32-C3F4 board
- JST SH 1.0mm 4-pin I2C cable
- 2.54mm male headers
Compatible with: ESP-IDF · Arduino framework · MicroPython · Zephyr RTOS








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