I built a digital music player out of a raspberry pi. It has a button connecter to BOARD7 and GND GPIO pins that starts or stops the music when it is pushed.
In the winter I sometimes wear a Chewbacca robe and sit on a leather couch while listening to music from my raspberry pi device. It's pretty awesome. Until I get up off the couch.
Winters near me are very dry and when I get off the couch wearing that robe I build up quite a charge of static electricity. You can really feel and hear it.
Then I go over to my raspberry pi music player when is enclosed in a plastic case and I push the button to stop the music.
And that's when I get a really nasty shock as I touch the button.
The first time this happened the 3.3v GPIO pin I was using stopped working. To fix it I had to switch the pin I was using. Then it happened again.
I've come to the conclusion that I either need to stop wearing my Chewbacca robe in the winter, which I really don't want to do, or I need to put some ESD protection on the button.
Some reading has suggested that putting a diode between the GPIO pins the button is connected to, to provide such protection, and allow me to keep wearing my Chewbacca robe.
So I have 3 questions:
1. Will a diode between the 3.3v pin and the gnd that the button is connected to protect the 3.3v GPIO pin?
2. If so, which diode should I use?
3. And what's a trustworthy place to get it?
In the winter I sometimes wear a Chewbacca robe and sit on a leather couch while listening to music from my raspberry pi device. It's pretty awesome. Until I get up off the couch.
Winters near me are very dry and when I get off the couch wearing that robe I build up quite a charge of static electricity. You can really feel and hear it.
Then I go over to my raspberry pi music player when is enclosed in a plastic case and I push the button to stop the music.
And that's when I get a really nasty shock as I touch the button.
The first time this happened the 3.3v GPIO pin I was using stopped working. To fix it I had to switch the pin I was using. Then it happened again.
I've come to the conclusion that I either need to stop wearing my Chewbacca robe in the winter, which I really don't want to do, or I need to put some ESD protection on the button.
Some reading has suggested that putting a diode between the GPIO pins the button is connected to, to provide such protection, and allow me to keep wearing my Chewbacca robe.
So I have 3 questions:
1. Will a diode between the 3.3v pin and the gnd that the button is connected to protect the 3.3v GPIO pin?
2. If so, which diode should I use?
3. And what's a trustworthy place to get it?
Statistics: Posted by Grabthar — Sat Apr 27, 2024 9:53 pm — Replies 0 — Views 17