Saturday, February 27, 2010
I have a couple of guys that successfully build their welders and are happy with it. However, there is a little bug that showed up. This bug is in the programming that happened in a last minute change to one line of code before starting to ship the processors out. It is more of an annoyance than anything else. By turning your voltage pot up, the set point text on the display will stop at 20Volt. If you keep on turning the potentiometer past this point your capacitor will get charged to a higher voltage and the over voltage protection will kick in and trip U5. The capacitor voltage will start to drop. To reset U5, you have to lower the voltage set point below the actual dropping capacitor voltage and raise the set point up again. If you are rebuilding battery packs and are using a car capacitor, you would never need to go that high with your voltage but for those guys that would like this bug fixed, send me an email and we can work out a way to get your processor updated. Everyone that received boards and processors after 02/15/10 will have the newest firmware already.