Figuring out where things went wrong is one of the inevitable- and sometimes most challenging- parts of crafting soft circuits. Luckily, the awesome people at Kitronik have put together a tutorial that walks you through the most common steps of trouble shooting that even comes in a handy downloadable pdf format!
Thread touching / shorting
It is important to ensure that the positive and negative connecting pieces of conductive thread aren’t touching each other. If they do the battery will be shorted which will prevent the LED from lighting up.
It is a good idea to fix or stitch the pieces into place so that no loose pieces can accidently touch.
LEDs connected backwards
If the LED is connected backwards then it will not work.
Check the following:
Thread connections not tight enough
If the point at which the thread connects to a component is not tight enough, the circuit may not work at all, or it may work in an inconsistent manner.
The image left, shows an example of a good connection and a bad connection.
If the battery is not inserted correctly, the power to the LEDs will be in reverse and they will not work.
As shown in the picture to the left, both the top of the battery and the top of the coin cell retaining clip are marked with a ‘+’ (positive) sign. The battery should be inserted so that they match.
Download a pdf version of this page here
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