His entire garage is set aside for a massive, intricately detailed, miniature version of Holland, Michigan, train included. He loves spending his time carefully constructing little houses—down ...
Using parts he had lying around and a doorbell from the hardware store, [Peter] concocted this DIY train crossing bell ... a 555 and some resistors to set the frequency and duty cycle.
Using parts he had lying around and a doorbell from the hardware store, [Peter] concocted this DIY train crossing bell ... a 555 and some resistors to set the frequency and duty cycle.
Results that may be inaccessible to you are currently showing.
Hide inaccessible results