A newbie question so sorry if I'm being a bit slow. I have a 4WD robotbase with an Arudino, Wireless SDCard and XBee Pro as seen here.
Probably quite an ambitious project for me but it's been progressing really well until my standard 1.5v AA energiser batteries ran out of spark. I have replaced them with some 1.2v rechargeables and bought a charger but they just don't give the power the robot needs. If I power the control circuitry via the USB all is well - I can switch on the battery pack and the motors will run perfectly. But if I disconnect the USB cable and try to run on the battery pack alone the power dies as soon as the relays switch into drive the motors and everything stops working.
The battery pack splits at source to provide power to the Arduino and to the Dual HBridge Motor Driver and I have followed the instructions provided so there is a charging circuit.
Is this problem caused by the drop from 1.5v to 1.2v? Could I use a 9.6v RC model pack to power everything or am I going to need two seperate battery provisions?
Really looking forward to your best advice so huge thanks in advance