Mark Jeronimus

I held a soldering iron since I was 5 and programmed since I was 8. Studied computational science. I like retro and low level.

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This user joined on 08/19/2014.

Things I've Built

Dual lab LASER driver

Drives Red (250mW) and 405nm (140mW). Linear accurate current control with potentiometer and analog input. Safety interlock switches. On-time recorders.

Mouse autofire

When enabled, the left mouse button repeats at 2..30Hz, configurable with a sliding potentiometer (hidden in the weights bay underneath).

DL1414T text scroller badge

+PIC16F84, xtal, transistor, zener, few resistors and 9V battery

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Dr. Cockroach wrote 01/18/2017 at 22:03 point

Good evening and thank you for the like of my cardboard computer project :-)

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Radu Motisan wrote 08/05/2016 at 20:54 point

Thanks for following uRADMonitor. I was able to produce the hardware already, and a few units are available through IGG: . Getting one is a great support for this project!

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Radu Motisan wrote 11/21/2017 at 20:34 point

Thank you for following #City Air Quality  ! Nov 22 (tomorrow) is the start of a crowdfunding campaign to encourage the uniform distribution of environmental detectors on the Globe. Read more on and if you feel this is important to you, please help me to make it happen.

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