alright I go tmy caps in today, Is hould be able to get this breadboarded tonight. Now I know I can hook it to the 5v pin on the arduino to get power, but will this pin also pwoer the arduino or only the USB or jack?
Printable View
alright I go tmy caps in today, Is hould be able to get this breadboarded tonight. Now I know I can hook it to the 5v pin on the arduino to get power, but will this pin also pwoer the arduino or only the USB or jack?
Wait a bit because I think we need a couple of extra components.
k
well I ended up breadboarding it up anyways and it works! I don't see the point in the resistor from the cap + to board + though, it seems to just make the caps take longer to charge. I let it run until both caps read about 2.5v, then unplugged the power supply. I cycled the servo back and forth several times and it worked fine
The reason for the resistor is to reduce the current drawn from the PSU, the other thing I wanted to do was make sure when the system was off, that the current wouldn't leak back into the computer.
this is now I've got it hooked up, but with the 2 10F caps instead of the .47F one
http://www.arduino.cc/cgi-bin/yabb2/...m=1279813240/0
A 5v zener diode?
Also, how long does it take to charge the circuit?
yes 5v, seems to take about 4 or 5 mins to fully charge both. I hooked my multimeter to them and watched it creep up ever so slowly, but one got to 2.497v and the other to 2.502 and seemed to stabilize there
Got a model number for that zener? I'm guessing the capacitor at 2.497v was closer to ground?
I'm currently fiddling with the simulator.
actually the lower voltage one was the one hooked to the diode, resistor adn 5v, the higher voltage one was on the ground side.
This is the diode I used:
http://www.radioshack.com/product/in...erValue=Diodes
