2019-11-25 (M) MIDIGlocken

Each plastic key would need a steel screw to interact with the electromagnet. I wanted to put it on the end so the key could swing upward without colliding into the coil. I drilled a hole, countersunk it, and added a short #4 screw that was nearly flush with the stock plastic.
Side-mounted screw hole

My hope was that the key could operate unimpeded after the upgrades were installed. I held the electromagnet off the side and I was able to get movement, but the magnet had to be too close to the screw before it would move.
Solenoid mounted behind key

Trying to move the key while the magnet was placed laterally was probably more difficult than attracting the screw directly to the face of the electromagnet. I moved the screw to the top of the key with the same method of drilling and countersinking.

There was still not enough power so I will have to look into a power supply with a higher voltage.
Top-mounted screw

I looked for a 24V power supply in my stock, but I could not find one. I had an old laptop unit running at 19V. I tested and connected the power leads, but it would not operate reliably. It turned out that Dell supplies require a data exchange in order to output any significant power. The necessary time and resources to hack the supply would not be a good investment. I want to find a new supply to continue.
Checking voltage from a laptop power supply

First time here?

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Completed projects from year 6

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