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Convert Any 3D Printer to Laser Engraver
Solar Mendocino Motor
Completed mine, but I think perhaps the micro may be faulty. On initial power-up it waits until I depress the encoder to start, but then never responds to a depression of the encoder. Can move through the menu after it times out after the first measurement, but cannot select any of the menu items. I do see that the encoder push button is not shorted, as the LED blanks each time the encoder is depressed. What did I screw up?
Completed the SMD solder project, great exercise! Powered it up, and the LEDs started acting weirdly/erratic without the jumper installed. Tried the jumper at all the differing points, when I got to the center pin to ground, the LEDs stopped and the power supply went overcurrent. Found a hairline short between pins 3 & 4 of the 555. Blew the device! Managed to verify the remainder of the board with an old Radio Shack Time Base Generator that I built in the '70s. Neat board!
3D Printing Class