A quick-and-dirty anvil made from a section of railroad track and a cutoff piece from a forklift fork/tine ... https://www.youtube.com/watch?v=8TJuqEUXmA4

no ... https://www.youtube.com/watch?v=dJcoP_i3bfo

Christmas is Coming! You're almost out of time for Christmas decorations, Christmas crafts, and hand made Christmas gifts! Time to get cracking! ... https://www.youtube.com/watch?v=9oMNMYq1MX4

I'm working on building a multi-system engine monitor that will output its data on a single gauge. It will display each type of data one at a time and cycle through from type to type every few seconds. So on a single gauge I can display multiple types of engine data, things voltage, amps, oil pressure, cylinder head temperature, hydraulic pressure, rpm, etc. So I need a gauge that can be driven by an Arduino or similar. I need the gauge to have a reconfigurable "normal" scale. And I need to display text that gives a description of what the gauge is currently showing. For the physical gauge itself I'll use a tachometer. It's fairly simple to drive a tach from an Arduino, using a Mosfet to output a 12V square wave pulsed signal. The tachometer reads that signal as pulses to the spark coil and moves the needle appropriately. This video is proof of that concept. Next the tachometer will need a new blank dial/face, with embedded RGB LED's across the top arc of the dial. These LED's will be lit up green/yellow/red to indicate the acceptable range of the current data type. Then I'll need a small textual display underneath the round gauge to tell the user what kind of display is currently being shown, and a brief indication of numbers what the range LED's are mapped to. Then all I have to do is figure out how to sense and read all the various data types and output them to the gauge on a rotating basis. ... https://www.youtube.com/watch?v=KQ9CtKHzyOs