Safe, I've noticed that you've been pounding us with charts and graphs because you want motor current limiting. Well, I've decided to tell you how to make it! And since this is the season where you hybernate and lay your eggs, you can tackle it indoors away from the fridgid winds.
First of all, you need to make a "black box" that goess between the controller and the throttle. It would take the throttle position and motor current as its inputs, and it would output a correct voltage to the controller. So how do we build this box? Answer: a microchip. The microchip will receive the inputs, if the motor current is too high, it will be limited, and the message sent to the controller. So when you turn the throttle to speed up, it sends the message to the microchip, and the microchip decides what to do.
Here is a microchip you can use on your computer. The actual microchip is the little rectangle in the lower left with all the electronics in it. THe other things are tools to help you work with the microchip.
You can buy this set-up at parrallax.com. This is called the Board of Education.
This "Board of Education" has a USB jack on it, so you can pluig it into your computer's USB port. With that connection, you can write computer programs in pBassic on your computer, and transfer them to the chip. WHen the chip is programmed, you can pluck it off the board, and put it in your device (bike)
- DSCN0571.JPG (88.24 KiB) Viewed 1181 times