Quote:
Originally Posted by jamie_1930
Could you show me how you set up this up electrically? In the victor manual it says to use a pwm signal driver if you are not using an ifi controller and I can't really find one on the internet. So I assumed I could boost up the amount of current by using a mosfet. I got that working and then I measured the current over time with an oscilliscope and it's pretty noisy. The voltage is a perfect square wave, but the current starts of at 0A and curves up to around 500mA and does a 10-20mA bounce as it goes up.
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I will have to check, but I do not remember doing anything with the circuit. From 50 year old memory, I think I have the white PWM wire going to the arduino output, red to the +5v and black to 0V, and it worked. It isn't pretty but has worked for a couple of years.
I powered it with a Usb cable, we have a utility tote that has an old battery, power cut off, and a plate with 4 auto cigarette lighter sockets for powering cell phone charges at events, and a built in usb charger.