Pi Cap Troubleshooting Guide

Find out how to fix your Pi Cap with the Pi Cap Troubleshooting Guide

There might be a few reasons why you are encountering problems with the Pi Cap. They could range from things like random touch events being registered, to the Pi Cap not responding to touch. If this sounds familiar, please refer to this troubleshooting guide.

Step 1 Tidy set-up

When you connect any wires to the electrodes of the Pi Cap, you need to make sure that they don’t touch each other. Otherwise, they cause interference. You can easily troubleshoot this by securing any wires with tape. Additionally, if you are only using a few crocodile clips, it’s easier to spread the wires across the electrodes. For example, if you use only three electrodes, it’s easier to use electrode E0, E5 and E11, instead of electrodes E0, E1, and E2.

Step 2 Changing threshold values of the sensor

If you want to draw long connections with Electric Paint, you have to take the paint’s high resistance into consideration. If the resistance of the applied paint is too high, you can try changing the threshold values of the sensors. By changing the sensitivity of the sensors, you can either have touch or proximity sensors, but also use long strips of Electric Paint.

Step 3 Grapher

It sometimes helps to visualise the data to see whether an electrode has registered a touch or a release event. For this, we have developed this Grapher tutorial: Using Processing, you can visualise the incoming data of the sensor on your Pi Cap. You can either run it locally or via OSC from a separate computer.

If you still have difficulties debugging your Pi Cap project, feel free to email us with your issue:

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