Hey,
I’m constructing a medium sized robotic arm and am having some trouble with the servos and the ssc32.
this post was very helpful; viewtopic.php?f=2&t=6322&start=0&hilit=645+servos+ot+working
Im sure its a power poblem but am wondering since I dont have a wallwart would two 9 volt batteries one conected to the VS2 and the other connected to the VL work instead?
In a pinch I have tested an SSC-32 and a single servo using one 9vdc battery. It will work for a few minutes as a test, but anything more will just drain the 9vdc battery in short order. It’s not recommended…
At the moment I am only using a 6.0vdc Ni-MH 1600mAh battery pack. Would it help if i switched to a 7.2vdc Ni-MH 1600mAh battery pack or a 12.0vdc Ni-MH 1600mAh battery pack?
Would it help what exactly?
The main problem is that mid sequence the servos keep turning off I assume that is because of a power shortage.
I was wondering if a higher powered battery pack would help fix that.
not entirely. it all depends on the current you are supplying to the the servos.
are you trying to power the board and servos from one battery. best to have your 6.0vdc Ni-MH 1600mAh battery pack for the servos and the 9v for the boards.
also make sure the wires you are using will allow for a good current to pass.
I would also strongly recommend getting a wallwart. you’ll be doing a lot more testing, programming and fannying about with it, and the last thing you’ll want is worry about your power supply or running out of battery juice. Makes the whole testing and programming a lot more fun.
You can get all sorts of very cheap power sources on Ebay, just make sure you’re not getting the cheapest ones: make sure you’re getting one that will supply the current you need without it’s voltage dipping. Depending on the size of your arm you’ll be looking at 2 amps peak, minimum, I reckon? I myself use a 5 amp one and don’t have any problems, and that’s with the biggest lynxmotion arm.
So one nice highpower 6V power source to power both your logic and your servos will do the trick, aslong as its voltage doesn’t dip during spikes.
But if you follow Innerbreed’s advice and seperate the logic voltage, you’ll already be sorted for now I think. Just don’t forget that VL = VS jumper 