When a tattoo artist friend of mine and I were talking about some of the things she wish her tattoo machine power supply did, and some of the things she wish it could do, that sparked an idea to custom build her one.
The way a tattoo machine power supply works is that it provides a DC voltage to a tattoo machine which is essentially an electromagnet that turns on and off rapidly. I explained it thoroughly in a video I created for this project:
The artist I was making this for was complaining that when she needs to tattoo multiple colors, she needed to have multiple machines on the go, all mechanically tuned different from each other. Current power supplies offered would only have one output (some would have multiple settings, but she wanted separate physical outputs). She also disliked the fact that most power supplies forced you to use a foot pedal to turn the machine on or off. And lastly she also wanted to be able to listen to music while tattooing someone, so she wanted a bluetooth speaker.
So the machine I built her, got rid of the pedal, replacing it with a large push button on the top of the unit. I also added multiple outputs, and a bluetooth speaker to it.
I learned a lot about making from panels in this project. I ended up making the front panel using plexyglass. I painted the back of it black and used a cnc mill to mill the image in reverse and filled it in with white paint. This ended up working great. If you want more info on this unit visit my web page at https://www.MRelectronics.net/tattoopowersupply