Digital Tachometer Modification
by NelsonStudios in Circuits > Tools
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Digital Tachometer Modification
![1.jpg](/proxy/?url=https://content.instructables.com/FQY/OSYK/HO0PYDC7/FQYOSYKHO0PYDC7.jpg&filename=1.jpg)
Adding a *constant on* feature.
I have wanted one of these for some time now but I need one that will stay on without holding down a button. The ability to set the tool, leave it and say start or rev something then come back to it and know the max/min speeds is very useful for someone who works alone. This was EASY, anyone can do it and in my opinion it makes for a much more useful tool.
I have wanted one of these for some time now but I need one that will stay on without holding down a button. The ability to set the tool, leave it and say start or rev something then come back to it and know the max/min speeds is very useful for someone who works alone. This was EASY, anyone can do it and in my opinion it makes for a much more useful tool.