This is an ESP8266 IOT board- our take on an 'all-in-one' ESP8266 WiFi development board with built-in USB and battery charging. It’s an ESP8266 WiFi module with all the extras you need, The most important part is an ESP8266 WiFi microcontroller clocked at 80 MHz and at 3.3V logic. This microcontroller contains a Tensilica chip core as well as a full WiFi stack. You can program the microcontroller using the Arduino IDE for an easy-to-run Internet of Things core. We wired up a USB-Serial chip that can upload code. It also has auto-reset so no noodling with pins and reset button pressings. To make it easy to use for portable projects, we added a connector for 3.7V Lithium polymer batteries and built-in battery charging. You don't need a battery, it will run just fine straight from the micro USB connector. But, if you do have a battery, you can take it on the go, and then plug in the USB to recharge. The board will automatically switch over to USB power when it's available. Comes fully assembled and tested, with a USB interface that lets you quickly use it with the Arduino IDE or NodeMCU Lua. (It comes preprogrammed with the Lua interpreter) We also toss in some header so you can solder it in and plug it into a solderless breadboard. Lipoly battery and USB cable are not included (but we do have lots of options in the shop if you'd like!)
Features
Sizes: 50mm(length) x 35mm(width)
lightweight
ESP8266 @ 80MHz with 3.3V logic/power
4MB of FLASH (32 MBit)
Built-in WiFi 802.11 b/g/n
3.3V regulator with 500mA peak current output
CP2012 USB-Serial converter onboard with 921600 max baud rate for uploading
Auto-reset support for getting into bootload mode before firmware upload
9 x GPIO pins - can also be used as I2C and SPI
1 x analog inputs 1.0V max
Built-in 100mA LiPoly charger with charging status indicator LED, can also cut a trace to disable the charger
Pin #0 red LED for general purpose blinking. Pin #2 blue LED for boot loading debug & general purpose blinking