3 ms·
To power this with a battery a better solution would be to use a switching power supply. (For example a LTC3525 step up converter with two AA 1.5 V batteries.)
by dlsym 12y ago
To power this with a battery a better solution would be to use a switching power supply. (For example a LTC3525 step up converter with two AA 1.5 V batteries.)
The linear voltage regulator basically turns 4V of the 9V block into heat. This is not really efficient.
- sp332 12y agoHere's a step-down converter from Adafruit https://www.adafruit.com/products/1066 https://www.adafruit.com/products/1066 It's pin-compatible with the linear regulator, so you can just swap it out.