You will receive 3 of these boards

This is a small prototyping board designed for common DIP microcontrollers and additional ICs and other circuitry. It was originally developed for the Arduino Nano, but will work with other micros in DIP form factor up to 11 rows wide and 18 pins long (ESP8266 chips will have to be on a carrier board with standard spacing like the Adafruit Huzzah Breakout or NodeMCU version 1.0).

Features:

66mm x 55mm x 1.6mm overall size. Four 3.1mm mounting holes in the corners. An additional 5mm hole is provided to run wiring through the board (works great in tight mounting spaces).

A total of 473 through-hole pads (plated on both sides to allow mounting from the bottom) in standard 0.1” (2.54mm) spacing. Holes are 1mm with .5mm ring thickness—they will handle components with wide leads.

Set up for the micro on the right and supporting ICs and discrete components on the left. Of course it can be used without microcontrollers as a general purpose prototyping board.

Rows of pins are tied together as on breadboards. The top silkscreen shows the tied together rows.

Ample power and ground rails, as indicated in the silkscreen. All grounds on the board are tied together. The power and ground rails around both sides of the micro area of the board are arranged for center positive standard servo cables (when headers are installed).

The bottom of the board features two areas for power supplies—allowing multiple voltage regulators on board.

This is a 2 layer board in 1 oz copper with a HASL lead free finish.

This is a listing is for three unpopulated boards--additional components are shown in photos for illustration only.