Now with international shipping directly from the manufacturer

Another development board for ESP8266-12F. But this one is a bit different, made to be easy to set up without the need for additional hardware like programmers and voltage regulators. A wide voltage range switching regulator enables the user to use different battery technologies from 1 AA cell up to LiPo cells. If you are using LiPo cells there is also a USB charger on the board. The ADC is connected to the battery with a voltage divider that you can turn off when not used to save power.

The board has been made as small as possible but still with a lot of functions and breadboard compatible.

Features:

• Optimized for ultra-low power and ease of use
• One of the smallest devboard for ESP8266
• Measure battery voltage through voltage divider with zero power use when not measuring
• All pins except G15, G16, Reset and Chip Enable exposed on the pinheader to the user
• CP2104 USB to UART with auto-reset support for getting into bootload mode before firmware upload
• LiPo charging from USB
• Wide range supply voltage to work with many different battery configurations
• Exposed setting pins for TSP61201
• Deep sleep prewired, only need to connect with a solder jumper
• Breadboard compatible

Specifications:

• ESP8266-12F
• Micro-USB for power and uploading of code
• Battery voltage: 0.8-5.5V or USB powered
• TPS61201 3.3V boost converter with built-in LDO for >3.3V capability
• LiPo charge current: 500mA (settable with change of resistor)
• ADC: 0-5V with a voltage divider
• Size: (LxW) 27 x 24 mm