bendhoward
Member Since: April 30, 2010
Country: United States
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Nope, nice idea, but the circuit isn't constructed that way.
The switch effectively sends a signal to the regulator (via a changing resistance) to tell it what output voltage to produce. Putting a header on the switch would not give you access to two outputs.
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I'm not seeing some pieces information that would be really useful to have before buying:
- Input voltage range (based on regulator dropout and reasonable current limit)
- Compatible wall-warts from sparkfun
- Current limit for board (considering LM317 w/ no heat sink)
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Would be nice if the description mentioned the exact name of the part in the Eagle library. I can't figure out a way to match them other than by looking at the part footprint to make sure it's the same. Any better suggestions?
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Yes! Definitely needs 4 FETS.
I had a miserable time with this thing because the voltage divider line may only work with devices that do not have RX lines pulled up! -
Is the charge rate 500mA? Not sure 500mA/hr actually means anything...
No public wish lists :(