DIY servo tester (using 555)

My servo tester seems to have died, so I'm going to see if I can replace it with a good 'ol 555. Yet another use for one of our favourite chips. Here's the RC Tractor Guy's video that got me thinking about this:    • Diagnosing what's broken on our servo tester   And his experiment using a Paduk microcontroller to drive servos:    • Controlling three servos with a Padauk PFS...   And, Anthony's experiments using an ATTINY to drive a servo:    • ATTiny85 and SG90 servo motor   And if you want to play along at home, here is the circuit I used (complete with math): https://www.gadgetronicx.com/servo-mo... ----- My tip jar:   / pileofstuff   If you are OK with me getting a commission on your purchases, feel free to use my affiliate links: https://ebay.to/33IF7PA https://www.banggood.com/custlink/GKK... Some other links to products may be affiliate links https://odysee.com/@pileofstuff ----- This isn't the only way to do it. It's probably not the best way to do it. But it's how I do it.