Interactive projection: Making 3D printed capacitive buttons

Interactive projection: Making 3D printed capacitive buttons

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This week, let’s turn our attention to turning the 3d printed buttons we made last time into capacitive buttons to activate the Arduino leonardo we programmed in the tutorial before that to control the interactive projection system created with ProPresenter 6 in the one before that.

The first step is to make the buttons conductive and since PLA plastic isn’t, I used metal tape to cover the surface (affiliate link). I also attached two 100k ohm resistors (affiliate link) to the buttons and the tape.

These were then connected to pins 2 and 4, 6 and 4, 8 and 4, and 10 and 4 of the Arduino Leonardo (affiliate link again) that I programmed in the second tutorial in this miniseries.

I got the library basic code from this tutorial. I modified that code (download it from the link below for free) so that touching the buttons sends “A” “S” “D” or “F” from the arduino.

Once I did that, it worked exactly as it did at SALT16 in Nashville. Now, I just need to find a projector to use to do it wherever I want. 😉

Click Here to get the capacitive 3D button code file from this tutorial (for free!)

If you’d like to chip in a few bucks, anything you do is appreciated. Just click this link to donate:
If you’d like to chip in a few bucks, anything you do is appreciated. Just click this link to donate.

About this show:

This show started with Renewed Vision’s ProPresenter software, but might include Photoshop, Final Cut Pro, or any of the other web services that churches might use.

If you do tech at your church or you use computers to advance your church’s mission, this show is for you.

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Paul Alan Clifford, M.Div.

Paul Alan Clifford, M.Div. has been a tech volunteer with Lexington City Church (formerly Quest Community Church) in Lexington, KY since 2000 and is the founder of, llc. He became part of the technology in ministry team when his church’s attendance was around 200 in one Sunday service and has witnessed it’s growth to a peak of 5,200 average weekly attendance in one Saturday service, four Sunday services in one online and two physical campuses. He literally wrote the book on podcasting in churches, twitter in churches, & servant-hearted volunteering, as well as writing various articles for publications like “Church Production” and “Technologies for Worship” magazines. He has thousands of members of his ProPresenter Users' Group on Facebook and thousands of subscribers to his YouTube channel.