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Looking to make a DJ controller
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Looking to make a DJ controller

by Butrdtost on Wed Jul 31, 2019 11:13 pm

I have a friend who would like have me make them something they can use to do things like skip, play
pause music and such.
They are a DJ and I actually got the idea after seeing the DIY Bluetooth Gamepad... I thought it would be easy enough to modify the functions to send media buttons instead of game controls.
Only issue being she would need 50-100ft range and need it to be as plug and play as possible when I give it to her. Anyone have any suggestions? I would like to keep it under $100 if at all possible.
Would it be better to just figure out how to mod the antenna on one of the Bluetooth boards to give it a larger range?
And yes I know things like this already exist but I wouldn't be asking if I didn't have faith in this community to support this type of crazy fun idea.
Thanks in advance,
Michael

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Re: Looking to make a DJ controller

by johnpark on Thu Aug 01, 2019 8:03 pm

The biggest gotcha for sure is range and reliability in an environment full people and things that can block signal. I'd look into using a pair of RFM69 or LoRa RFM95 based boards, such as https://www.adafruit.com/product/3078 These packet radio systems are great at sending small messages over great distances reliably.

You'd set up one as the transmitter with an antenna, battery and buttons, and then a second one as the receiver plugged into the DJ laptop/computer. Press "play" on transmitter, receiver gets that message and then sends the play command over USB just like it's a computer keyboard with the "play" media key on it.

Here's an example of a similar setup https://learn.adafruit.com/remote-effects-trigger although I wasn't doing the USB part of it, but that would not be difficult to add, as the 32u4 or M0 chip based Feathers show up as USB HID devices.

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Please be positive and constructive with your questions and comments.