Fragile connectors on the SparkFun Nokia knock-off LCD are a headache. They’re not rated for multiple insertions, but we can usually move them very carefully on a final prototype. A mating connector we soldered must have warped from the heat. It ate two LCDs right away. On the right is the ‘good’ from a few […]
Category Archives: techniques
Power supply connector paper clip hack
Gerard sent a tip for connecting multiple cables to a bench power supply: Here is a simple hack which will allow you to connect, wrap , group quite a few power cables in parallel… and all you need is a paper clip.
Import images into Cadsoft Eagle
We’re trying to take it up a notch by adding the Dangerous Prototype logo to future PCBs. We weren’t sure how to do this in Cadsoft Eagle, so we thought we’d share what we did. The Cadsoft miscellaneous downloads page has a number of utilities and Perl scripts that convert images to Eagle compatible scripts. […]
Easy infrared UART data link
Here’s an easy way to transfer data with an infrared LED and an infrared remote control demodulator. The example uses an Arduino, but the technique will work with any microcontroller. The transmitting microcontroller powers an IR LED from a pin configured as a 38KHz pulse-width modulator. Another pin configured as a 2400bps UART switches the […]