Servo Pulse to voltage converter.. Mini SSC II

I've tinkered with a kronosrobotics servo control chips and ran a servo control output thru a diode to a 1mf capacitor. I was able to connect this to the base of an NPN transisto to the + side of the capacitor, which inturn controlled an LED. I could see some change in led intensity when changing the servo position full range. You can connect a meter and see some voltage change. Below is a page where I'm using a mini ssc ii as a pan/tilt webcam control.

| I have a motor that requires a control voltage between 0-5V.. Ov=stop | and 5V=full speed. I'm using Mini SSC IIa and need to take one of the | servo outputs and create a voltage? | | Is there any off the shelf device that will do this? | | Can I just integrate the pulses and offset and scale the integration | with an op amp circuit?

I'm not familiar with the Mini SSC IIa, but are the servo outputs it generates compatible with R/C servos? Judging from this page --

that's exactly what it's supposed to control.

If so, then all you need is a R/C ESC (electronic speed control) and you're set. It doesn't really get any more `off the shelf' than that

-- the plug may even be the same.

ESCs don't generally vary the voltage. Instead what they do is turn the power on and off a few thousand times a second, so 1/2 power = power on 50% of the time, 25% = 25%, etc. This is more efficient than other ways of adjusting the motor speed, and scales very well when you're dealing with large motors (I know you're not, but ...)

Guessing that your motor is very small, something like this might be perfect --

but there are other versions available, larger and smaller. Dozens, possibly hundreds of other versions.