# ESP32-Tux Dev Board

ESP32-C3 Dev Board with Energy Harvesting Circuit (BQ25504) for charging with a small solar cell

- **Seller:** [lifex's store](https://www.lectronz.com/stores/lifex), Basel, Switzerland
- **Price:** €13.00 (EUR, before shipping and taxes)
- **Availability:** In stock
- **Product page:** https://www.lectronz.com/products/esp32-tux-dev-board

## Links

- [Documentation](https://github.com/tux-friend/tux-cube/tree/main)
- [Design Files](https://github.com/tux-friend/tux-cube/tree/main/pcb)

## Images

![ESP32-Tux Dev Board](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NDU5NDgsInB1ciI6ImJsb2JfaWQifX0=--e424ce88adc5dab80c3082ffaee326041303e65b/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJKUEciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--a1419a086f227676aca33a49760ac51e58b523e3/2023-05-28T18-3A16-3A24.879Z-DSC00305.JPG)

## Description

#### What is it?

This is an ESP32-C3 board I created for building a sensor cube. To make it (more or less) energy independent a energy harvesting circuit with the BQ25504 chip is added (inspired by [this project](https://www.tindie.com/products/onehorse/bq25504-solar-cell-lipo-charger/). The board can be powered with a 3.7V LiPo battery which is charged by a small solar cell.

The board has a USB-C connector for powering and programming the ESP32-C3. It has 9 GPIO Pins, UART/Tx-Rx-Pins, Ground, 3.3V & 5V Pin. On board is also a WS2812B RGB Led.

#### Why did you make it?

I like the ESP32-C3 and wanted to create my own PCB board. I also wanted to learn the basics of KiCAD and PCB design. I will use this board for my other project: the sensor cube.

#### What makes it special?

All components are placed on top of the board, so the bottom is empty/flat. As far as I have seen it's the only ESP32 board with an energy harvesting circuit on it.

It's small (25 mm x 25 mm) and square :)

## Shipping policy

Articles are shipped within 5 work days with Swiss Post.
Normal delivery time after shipping is ~7 work days.