I'm taking part in a contest about car remote control and line follow.
Contest organizers require the battery <= 9V and don't use low voltage circuit.
I'm using 18650 battery (3.7V/cell, if charges full, up to 4.2V). If using 2 cells, we only has 8.2V. It is not enough for car to uphill (slope is 20 degrees).
I want to find some kind of battery to creates power 9V (can merge some cells) and supply big enough discharge current.
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Your topic was MOVED to its current forum category which is more appropriate than the original as it has nothing to do with Installation and Troubleshooting of the IDE
Gearing is the answer to getting up the hill. Buck converters are the answer to creating a voltage that will drive the motor efficiently. If the voltage is the only limitation, you can put a big LiPo and convert up to the voltage you want.
Depending on the weight, motors and gearing, you can try a car battery, or smaller lead-acid battery,!
Motorcycle batteries work well.
My crystal ball sees a cheap/ancient L298 motor driver that looses 4volt when under load.
Leo..
Is there a module that can replace the L298?
It only looks like 4x AA, which is probably just enough to drive that in a level surface.
But uphill was the issue. Lead-Acid batteries are heavy, and that will be an issue. Mind you a battery pack of several (8 in Series will create 10.6v) AA - NiHM rechargeables might suit the project. LiPo batteries are lighter though, but do require extra circuitry for charging and discharging properly.
Don't know.
An MC33886 board could work.
Leo..
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