Gumboard is a tiny wifi development/hacking board based on the esp8582 M1 Module. It has most things you need on the board to connect sensors, display, etc and start hacking.

Available for Purchase at Tindie

This board with a TeHyBug universal sensor can replace any TeHyBug board when battery powered operation is not needed.

1. USB to Uard Chip for flashing programming
2. RBG LED (WS2812b) connected to GPIO_12
3. Mode (GPIO_0) and Reset buttons to boot into a flashing mode
4. additional two buttons connected to GPIO_4 and GPIO_5 on the back of the board
5. 4 Pin audio Jack Connector for connecting i2c TeHyBug sensors and Display
6. Micro USB connector for flashing / programming and power delivery

For flashing and programming you can use ARDUINO IDE, select there generic ESP8285 board. Also you can use the ESPTool to flash binaries to the board. In the src folder you will find binaries and code examples for the board.