The HardCode HC22002 is a compact USB-C-to-UART programmer for the ESP8266/ESP32 series. It handles the automatic reset and download-mode entry for you, so esptool, the Arduino IDE and ESP-IDF flash firmware with no manual button sequence — no "boot-button dance."

Because it's USB bus-powered, one cable carries both power and data — no wall adapter needed. On-board RST and BOOT buttons are there for manual control whenever you want it.

Ideal for bringing up custom ESP boards that don't carry their own USB-serial bridge, small-batch firmware loading, and serial debugging on the bench.

Features

• USB-C, bus-powered (power + data over one cable)
• Automatic reset / auto-boot — flash with zero button presses
• On-board RST and BOOT buttons for manual control
• Works out of the box with esptool, Arduino IDE, and ESP-IDF
• Supports ESP8266, ESP32, ESP32-S2/S3, ESP32-C3
• Selectable pull-up via a populated 2.54 mm header + jumper cap (pre-set to a sensible default)
• 3.3 V logic; clearly labeled target breakout (TX, RX, EN, IO0, GND, VCC)
• 4× stick-on rubber feet; ships in an ESD bag

What's in the box

• HC22002 programmer board (rubber feet + pull-up header & jumper cap fitted)
• USB-C cable
• 2× connection leads — 1× Dupont 6-pin + 1× 2×3 ribbon (fits either target header)
• Quick-start card (QR → online pinout + 3-step flashing guide)
• ESD bag

Need isolation?

For mains-referenced, independently powered, or different-ground targets, see the galvanically isolated HC22003.

Need a custom design or Idea of improvement

Contact-us - support@hardcode.com.br

shipping within 2 working days.

- 5€ within Europe

- 30€ worldwide