Final Report

Final Pic.png


Basic Concept:

The RO-MC-001 (Remote Operated Mic Clip) allows the user to adjust the angle of a mic on a mic stand. Designed primarily for concert recordists with tall stands or boom operators who constantly need different angles, the RO-MC-001 allows for easy adjustment without the hassle of taking the mic down.


Demonstration by 2019 MTech Audio for Video Competition Winner Chris Friedman:



“When you’re on a fast paced set and you have your pole expended 20+ feet, there isn’t always time to make the small mic angle adjustments you need to capture dialogue with a tight polar pattern. Being able to adjust it by remote control is game changing.”

-Chris Friedman


“I used it to record something and I already raised the stand all the way up and then my handy dandy RO-MC-001 could point it more towards the thing I was recording.”

-Alexandra D’Yan


Ideas for V.2:

I think the biggest take away both from my opinions and the feedback from the users was size.  The size of the remote was fine, but the electronics housing was way too big. One way to cut down on size would be to use a micro controller that already has bluetooth integrated into it such that I do need to allocate extra space for a bluetooth module. One user suggested an alternative approach where instead of cutting down on size, you could ditch the remote and just clip the main housing to your belt and use a long cable.


Link to Manual



Mid Term Progress


So far, I have successfully gotten the remote to pair with the device. Once both the remote and the servo have been powered, the two will automatically sync through bluetooth. The user can use the LIPO battery powered remote to increase or decrease the angle of the mic clip by +- 5°. The servo is powered by a 1000 mAh battery that will attach further down the mic stand. I’ve also gotten a Mac application running.

All of the things left to accomplish are fabrication related. I need one custom part to be made to help guide the axle of the servo (attached below). I also need a simple box for the remote and the servo. I also need to solder the components to perfboard. Lastly, I need to attach the box containing the servo controller to the clip. If I have time, I would like to make it such that a user can control the clip from a computer as well as from the remote, and possibly even with a phone.

Screen Shot 2019-03-22 at 10.26.54 PM


Week 6:

  • 3D print axle part
  • Perf-board remote

Week 7:

  • Perf-board servo controller
  • Cut both enclosures

Week 8:

  • Build battery attaching apparatus


Week 9:

  • Mount servo controller to clip
  • Start Mac app

Week 10:

  • Continue working on app (possibly finish)

Week 10:

  • Finish app
  • Write manual

Week 11:

  • QA test

Week 12:

  • Done

Week 3

I’ve gotten the remote for the clip working using bluetooth:



For the remote, the enclosure will be a box (small as possible) probably around 2×3 inches. It will have 3 holes, 2 for buttons and one for a rotary switch.

The receiver will probably also just be a simple box with one hole for a power switch.

First Steps

The first steps in making a remote controlled adjustable mic clip were to get the servos working.  Because the servos would be facing in opposite directions, their positions would need to be inverted so that they turn the same direction. Right now, I have two buttons that increase or decrease the servos position by 10°:


While I wait for the remaining parts, I was able to construct the “axle” that will turn the mic clip by sawing apart a 1/4″ threaded pole:



Included is also a basic sketch of the design: