Throw it at stuff to create jobs!
Here is the prototype for my soon-to-be-fully-realized Tinder Robot.
It’s pretty basic: a 555 timer that drives a solenoid through a TIP120 transistor. I use two potentiometers and a 100uF capacitor to control the speed of the solenoid, and voltage regulator that allows me to power the solenoid at 24 volts.
Here’s the Eagle schematic:
The board layout:
I messed up the Eagle schematic a bit – the base pin for my transistor was different in real life than what showed up in my schematic, so I had to do some weird wiring to get the thing to work.
Here are the parts I used:
- 555 timer
- 100uF capacitor
- 10k ohm resistor
- 2 10k potentiometers
- TIP120 transistor
- LM7805 voltage regulator
I made a simple circuit based on Eric Rosenthal’s diagram using a Roland Modela milling machine. It’s a radio that lights up an LED when it receives a signal.