
robo rad

My Rad 1.0 project robot is nearly completed but have one serious question about causing power damage to either the 4 wire H bridge pwm or the EZB_4. After completion of successfully wire soldering to original rad 6 volt motors to H Bridge which is sharing the same dual 7.2 Nimh battery packs with Ezb_4, I also rewired the original Rad wires and circuit board back to original so I can keep the original radio control working with it's own original 6 volt nickel battery pack.Now the wires going to both rad motors are shared with H bridge at 5 volts (button is pressed on h bridge to use it's own 5 volt regulator and not EZB 7.4 power) Now I am scared to ever run both RC original rad system with new EZB system together at same time.So far I have tried running with 1 system at a time, I simply remove old Rad 6 volt battery and leave original switch off while running EZB.Then to regain old rc control I simply disconnect EZB/h bridge battery packs and put in old Rad 6 volt battery and turn on switch,works great again with. Old radio control......So now my question is about motor leakage feedback voltage damage to H bridge,would this happen if I ran old system and new EZB system together with all batteries connected at same time? Or would I get some benefit with extra battery power from original rad battery 6 volts?I am afraid to try that but may consider adding a new switch to just add old 6 volt battery in parallel wiring to the h bridge/EZB battery packs,any advice greatly appreciated,hope my question makes sense the way I described it *confused*
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