Earlier this week we prototyped a transistor tester circuit on a breadboard. We wanted a start with a full microcontroller and power circuit, ready to go, Arduino-style. All the breakouts we had on hand were a pain to use. Most obscure the prototo area and many were just too big.
Inspired by Shaos’ nedoCPU-32, we made a few ‘blade’ or ‘knife’ breakout boards for chips we commonly use in a new design. All the pins on these breakout boards are on one side, so they can plug straight into one side of a breadboard. Here’s the first, a breakout for the PIC24FJ64GA002 (Bus Pirate) and PIC24FJ64GB002 (USB version) microcontrollers in SOIC-28 packages. Next we’ll do one for the 18F2550 (IR Toy).
There are two power supply options. USB or an external DC source are selectable through a jumper. We like to populate the USB even for the non-USB GA version because it’s such a convenient source of power.