Archive for the Hot glue is the best thing in the universe. Deal with it. Category

Shoes work again!

Posted in arduino, giant, Hot glue is the best thing in the universe. Deal with it., LED on May 27, 2010 by raphaelabrams

The giant baby shoes work again. They blink on each footstep.

Good Bends and Bad Bends

Posted in electronics, Hot glue is the best thing in the universe. Deal with it. on May 26, 2010 by raphaelabrams

Free-form or “dead bug” construction can be great in a pinch. It’s a little tricky to get it right, though. One thing to consider is proper bending. If you completely flatten the pins on a DIP package it will look nice and neat, but the bend will happen at a place that was bent before. It’s going to break. Look at the arrow, you can see a tiny bit of metal peeking out of the chip where a pin broke off.

Now if you only bend up to the shoulder of the pin you’ll be bending fresh metal. It won’t break as easily and is nice and springy.

Of course fragility and breaking are a major part of free-form circuits. There’s no way to make anything really strong with this technique, so if there’s time make real circuit boards.

Oh, and when you’re done cover it in hot glue.  Just go crazy. This actually does a pretty good job of keeping everything together, and is mostly waterproof too!

Freeform analog circuit

Posted in analog, Hot glue is the best thing in the universe. Deal with it. on May 5, 2010 by raphaelabrams

I finally settled on a circuit for the analog section of the lip syncing circuit. There’s a dual op-amp, a few resistors, two capacitors, a potentiometer and a diode. It was getting to be a hassle to keep it on the breadboard, but we didn’t have time to make printed circuit boards. So I soldered it all together free form. Here’s an air-wire sketch:

Here’s the mostly finished circuit (without the potentiometer) top and bottom.

Finally I encased the whole thing in hot glue. It keeps the parts from bending and breaking, and it’s pretty much waterproof.