
pranav
India
Asked
— Edited

I need to provide external power for the servos as I'm using a lot of them. Can any one suggest any voltage regulator for the external supply of voltage and how do I connect them to the servos. Does anyone have some images of the wiring that would guide me...
Which voltage regulators shall provide the juice for the servos? I have four servos in each arm of the robot. Shall I use one voltage regulator for each arm?
I'll be using the servos at 5v itself. I'm using a 12v lead-acid battery.
1) What is the amperage that the servos can take?
2) Can I use LM317 or LM338 for the external supply? If so, how many servos can I drive with each voltage regulator.
3) Major Problem: I popped out my LM1084. Would it just affect the +5V supply or wold it even affect the logic supply. If I start supplying external voltage for the servos and take the logic supply from EZ-B, would they be working without the lM1084 on the EZ-B?
Here ya go , 4 - 5 volt regulators @ 5amp in parallel
This will give you up to 20 amps to power lots of servos! Most high torque servos draw 1-2 amps at stall and standard servos even less , maybe 200-500 ma per servo. If for some reason 20 amps is not enough ( not likely) you can add another regulator to the same setup. Be sure and make sure you use wiring with appropriate gauge to handle the current. This calls for 10-12 gauge stranded wire. Use a barrier strip and spade crimp on connectors to connect several servos to this regulated power source. This should resolve your servo power needs
How about my third doubt regarding Lm1084.. Can I solve that issue?
Once again Thanks a lot Josh...
I have an issue... I was trying to check if the digital pins has got anything to do with the LM1084... Using the Set Digital.. I tried to read the voltage out from Digital pins. I'm reading a 7v when it is SET. I'm using a 12v battery to power EZ-B. Does it mean that the components used on EZ-B would work even without that regulator LM1084 if we supply the external voltage to each of the components. What should be the ideal value on Digital pins when they are set?
@DJ , please guide me through this.
Please guide me through this...
I guess the problem might be the capacitors that are associated on the board to the voltage regulators... @DJ please help me out as to what are the capacitors that are connected to the VR1 and to VR2 so that I can replace them with the ones compatible to the regulators I'm using...
Is it actually with the capacitors?
Sidenote: if the board etching is damaged though that will prevent the function of ezb you could try soldering jumpers from ground to the ground on the IC socket and power from regulator to the IC socket. That would bypass the damaged etching in the board. That's a last ditch effort to revive a badly damaged board so follow the resistor tests first.
I have to bypass the voltage.. Now where would the output of LM1084 go and where would the output of MIC29300 go?
What is the ground and power on the IC socket? I mean where should I connect them on board? Where should I connect them to the microcontroller?