Here's some handy specs!
Measures 2.0" x 0.9" x 0.28" (51mm x 23mm x 8mm) without headers soldered in
Light as a (large?) feather - 6 grams
ESP8266 @ 80MHz or 160 MHz with 3.3V logic/power
4MB of FLASH (32 MBit)
3.3V regulator with 500mA peak current output
CP2104 USB-Serial converter onboard with 921600 max baudrate for uploading
Auto-reset support for getting into bootload mode before firmware upload
9 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
Pin #0 red LED for general purpose blinking. Pin #2 blue LED for bootloading
debug & general purpose blinking
Power/enable pin
4 mounting holes
Reset button
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