TL;DR I need something to map 0-5v PWM signal to 4.6v-7v DC (~10mA), kind of like what an RC speed controller does.
I'm trying emulate a 2-axis, hall-effect joystick so that it can be controlled by PWM from a RC receiver. (The only part of the power chair I'm using is the 24v motors, batteries, wheels and controller.)
Now the joystick is a hall effect 2-axis joystick. I want to emulate the signals it is sending out. I already measured its outputs. It has five wires:
Red: 11.88v steady green: 6v steady blue: (left/right axis) 4.6v-6.95v, depending on joystick position - slight, static pulse yellow: (forward/reverse axis) 4.6v-6.95v, depending on joystick position - slight, static pulse black: ground
What I know so far:
- Arduino: can't output more than 5v, slightly overkill anyway
- RC speed controller: overkill in $ and performance, and not typically customizable enough to allow for ~4.5v center, 7v forward, and 4.5v reverse
- custom circuit: Very time consuming - we would much rather use something off the shelf
Do you know of a path of lower resistance for solving this problem?