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I don't quite understand your question, but you can control digital servos exactly how you control an analog servo . . .
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How to wire up the batteries?
Quote from: hardmouse on December 18, 2010, 02:10:56 AMHow to wire up the batteries?step 2:http://societyofrobots.com/axon/axon_getting_started_hardware.shtmlhttp://societyofrobots.com/axon2/axon2_setup2.shtml
The voltage is the same... You're wiring the servos in parallel - all your battery needs to do is to be able to handle the current draw.
Any suggestions for what type of battery if I am using 18 servos?
Quote from: hardmouse on December 18, 2010, 02:16:55 PMAny suggestions for what type of battery if I am using 18 servos?What kind of servos?For example, lets say you have 6V servos that use about 0.5A. That means your battery needs to output 6V at 9A (18x0.5 = 9).You can also use two smaller/weaker batteries in parallel on the Axon for 2x the current.
You will want to regulate the 7.4v LiPo voltage to a more reasonable five or six volts - a switching regulator (RC BECs work well) would be fine. Servos tend to not like getting extra voltage - you might burn something out, and these aren't cheap $10.00 servos either. Other than that, it'll be good.