When I was in grade school, I would pick through my dad’s electronic detritus, connecting everything together, making motors spin and little bulbs light up. One afternoon, I burnt all the LEDs because I didn’t hook them up with resistors. This just didn’t make sense to me. Why would you ever want to limit the current. Isn’t this whole Radio Electronics shtick about making things POP!?
In college, I helped build Timmy, a very precise little roving robot…