I have not yet tested this breakout. I’ll remove this comment and add photos when I’m able to complete testing.
I ended up with more L293NE chips than I needed. And I often avoid prototyping with the L293NE, because it requires a ton of diodes and general breadboard ugliness.
So, I figured, why not just build a bunch of breakouts so that I can mess around with motors, without having to fuss with all the extra parts?
- 1x OSH Park PCB
- 1x L293NE
- 8x Schottky Diodes
- 1x 6-Position Screw Terminal Block (which will probably just come as two 3-Position blocks stuck together)
- 1x 8-Position breakaway header pins
- Salt and pepper to taste
- Solder the L293NE chip in place in the centre of the board. Don’t put it on backwards; the square pad signifies pin 1. In order to improve heat dissipation, I recommend soldering this one directly to the PCB, rather than using a chip socket.
- Bend the anode leads from all eight Schottky diodes, all the way around the diode body.
- Solder the 8 diodes in place. I designed this board so that the diodes stick straight up. Cathodes into the square pads, anodes into the round pads.
- Solder on the screw terminals, so that the terminal holes face toward the outside of the board.
- Finally, solder those header pins to the bottom of the board.
I intended this module to provide near-raw access to the L293NE chip, and although I’ve only considered using this with two brushless DC motors, many of the applications described in the chip’s datasheet should work.