I'm planning on getting to this mount my robot on. Since it comes with two motors and a gearbox, do I still need an H-bridge? Which one would be a good one?
Are there other kits like these? No, I'm not making my own chassis right now because my last one was a disaster so my project stopped for a few months.
Also, I posted the following on societyofrobots. Does anybody here know?
I can't figure this out. I'm looking for an equation to get centimeters from the range finder. I'm using an Arduino.
So far I:
A)Can get analog values from the rangefinder
B)Can print on the screen
C)Don't know the equation to convert the cm.
Also the values that come in seem to shift even when there is only slight movement (shaking), should I take an average?
This motor shield from Adafruit will push those motors great. I used them on a small robot a while back. I wasn't very pleased with the way that the treads came off occasionally.
For you other question search either the Seattle Society of Robots or Robotics society page for "Linearize sharp sensor " or a variant thereof. I remember seeing it a while back but don't remember where.
Concerning your sensor there is numerous ways to do it:
you can make a table indexed with the result of the measure and giving the real value. Memory hungry solution if tables are large.
you can slice the curve in small pieces in which the curve can be approximated to a straight line.
you can enter some points of the curve under Excel and ask it to compute a regression analysis. This usually leads to computing intensive equation not well tailored for a little microprocessor.