# Just built an old midibox kit i had laying around.

**URL:** <https://forum.midibox.org/t/just-built-an-old-midibox-kit-i-had-laying-around/18162>\
**Category:** MIDIbox HUIs\
**Tags:** solenoid-core-encode\
**Created:** [February 20, 2014, 6:33am UTC](https://forum.midibox.org/t/just-built-an-old-midibox-kit-i-had-laying-around/18162 "2014-02-20T06:33:00Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![k-rAd\_MB6401](https://forum.midibox.org/user_avatar/forum.midibox.org/k-rad_mb6401/32/498_2.png) [@k-rAd\_MB6401](https://forum.midibox.org/u/k-rAd_MB6401)\
**Post date:** [February 20, 2014, 6:33am UTC](https://forum.midibox.org/t/just-built-an-old-midibox-kit-i-had-laying-around/18162/1 "2014-02-20T06:33:00Z")

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I’m using it to trigger a relay for solenoid fun.

I’m waiting for some transistor to see if i can get those to work in place of the relays.

Also testing encoders to add to my old box.

I need and encoder for selecting scenes in ableton.

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Previous build.

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here’s a video of the solenoid in action

> **[\- YouTube](https://www.youtube.com/watch?v=UaRW4kB%5C_fbM)**
>
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have fun!

K-rAd

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[http://www.padk-rad.com](http://www.padk-rad.com)

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**Author:** ![k-rAd\_MB6401](https://forum.midibox.org/user_avatar/forum.midibox.org/k-rad_mb6401/32/498_2.png) [@k-rAd\_MB6401](https://forum.midibox.org/u/k-rAd_MB6401)\
**Post date:** [February 20, 2014, 6:35am UTC](https://forum.midibox.org/t/just-built-an-old-midibox-kit-i-had-laying-around/18162/2 "2014-02-20T06:35:05Z")

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i am using the mios application: ain64\_din128\_dout128

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**Author:** ![k-rAd\_MB6401](https://forum.midibox.org/user_avatar/forum.midibox.org/k-rad_mb6401/32/498_2.png) [@k-rAd\_MB6401](https://forum.midibox.org/u/k-rAd_MB6401)\
**Post date:** [February 21, 2014, 11:15am UTC](https://forum.midibox.org/t/just-built-an-old-midibox-kit-i-had-laying-around/18162/3 "2014-02-21T11:15:49Z")

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&nbsp;

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**Author:** ![k-rAd\_MB6401](https://forum.midibox.org/user_avatar/forum.midibox.org/k-rad_mb6401/32/498_2.png) [@k-rAd\_MB6401](https://forum.midibox.org/u/k-rAd_MB6401)\
**Post date:** [February 21, 2014, 11:26am UTC](https://forum.midibox.org/t/just-built-an-old-midibox-kit-i-had-laying-around/18162/4 "2014-02-21T11:26:35Z")

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made a transistor breakout board with a 2n6290 transistor a flyback diode for the solenoid and a flyback on the trransistor.

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**Author:** ![kpete](https://forum.midibox.org/user_avatar/forum.midibox.org/kpete/32/382_2.png) [@kpete](https://forum.midibox.org/u/kpete)\
**Post date:** [February 22, 2014, 4:42am UTC](https://forum.midibox.org/t/just-built-an-old-midibox-kit-i-had-laying-around/18162/5 "2014-02-22T04:42:28Z")

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The diode across the transistor shouldn’t be needed.&nbsp;

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**Author:** ![k-rAd\_MB6401](https://forum.midibox.org/user_avatar/forum.midibox.org/k-rad_mb6401/32/498_2.png) [@k-rAd\_MB6401](https://forum.midibox.org/u/k-rAd_MB6401)\
**Post date:** [February 23, 2014, 12:07am UTC](https://forum.midibox.org/t/just-built-an-old-midibox-kit-i-had-laying-around/18162/6 "2014-02-23T00:07:08Z")

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im sure you are right. i was just being extra careful. and i saw diodes used in the uln2003.