I just wanted to share a couple of ideas for alternative ways to power your AVR project. 9 volt batteries are lame. Option A) Last year before a camping trip I bought a couple of "emergency cell phone chargers" at Fry's for under /each. Fast forward to now and they no longer fit any of our cell phones. On the way to the trash I realized that I just scored a couple of boost converters. I broke one apart, soldered new leads on, attached a single AA battery holder and covered it with a big piece of heat shrink. Sweet! These aren't able to supply a ton of current but they'll power most basic I/O projects and they are tiny. A bonus feature is that using a single rechargeable AA battery is way cheaper and more efficient than running a project on a 9 volt battery. Option B) Alternative power and camping in my head reminded me of a servo with a fried control board that's been under my bench forever. I built a little handle out of Erector set parts and voila... This thing will come in pretty handy when I'm sitting by a campfire and just have to show off a sweet sketch. Nothing too fancy going on, I just soldered the red and black wires directly to the motor. I scored that LED matrix at Goodwill yesterday in a toy for under a buck! It's running the daft punk table sketch from Instructables. ALERT! Hooking a servo up directly to the power input pins on most ICs, LEDs, etc will absolutely fry them (trust me).. This one will put out close to 12 volts and plenty of current when you ...
Tags: arduino, servo, generator, power supply, boost converter, project, electronics
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