jodicalhon
New Member
I'm building a small robot that will contain an 18A controlling an LCD.
I'm powering the Picaxe and associated circuitry from a 7805 regulator, but I'm running the motors from 12V (8 x AA's).
Is it alright to just tap off the 12V into the 7805, with lots of smoothing caps o'course, or is this too high a voltage to be feeding the little fella. Should I take a tap off, say, 9V instead? (Which could be a bugger, as I'm using two 4 x AA packs and don't want to melt the plastic if I solder onto a spring or whatever.)
The circuitry powered by the 7805 will be drawing around 50mA, max.
Any thoughts appreciated.
I'm powering the Picaxe and associated circuitry from a 7805 regulator, but I'm running the motors from 12V (8 x AA's).
Is it alright to just tap off the 12V into the 7805, with lots of smoothing caps o'course, or is this too high a voltage to be feeding the little fella. Should I take a tap off, say, 9V instead? (Which could be a bugger, as I'm using two 4 x AA packs and don't want to melt the plastic if I solder onto a spring or whatever.)
The circuitry powered by the 7805 will be drawing around 50mA, max.
Any thoughts appreciated.