Pololu 5V Step-Up/Step-Down Voltage Regulator S7V8F5 POL_High-Density (HD) QTR Arrays 7A/Phase w/o Heatsink

7A/Phase w/o Heatsink

This board is much higher quality with plated-through-holes and annular rings that will not lift off the PCB under normal soldering conditions

And finally returns code OK

four AAA batteries : the 3pi+ robot works with both alkaline and NiMH batteries

these controllers are available in various power levels

Pololu 5V Step-Up/Step-Down Voltage Regulator S7V8F5 POL_High-Density (HD) QTR Arrays 7A/Phase w/o HeatsinkThe S7V8F5 switching step up step down regulator efficiently produces a fixed 5 V output from input voltages between 2. 7 V and 11. 8 V. Its ability to convert both higher and lower input voltages makes it useful for applications where the power supply voltage can vary greatly, as with batteries that start above but discharge below the regulated voltage. The compact (0. 45 0. 65) module has a typical efficiency of over 90% and can deliver 500 mA to 1