Tell us about yourself!
Thanks, I'll give that a go
I have a similar issue with the cold start. I think the clone handles actually just pull way too much current, kicking the power supply into OPP or OCP. I guess the resistance changes enough once it's somewhat warm that it stops this behaviour.
DIY Digital Soldering Station (Hakko 907)
Just finished my version to replace my old Weller WECP-20.I went a bit overboard on some parts though, using an integrated Meanwell LRS75-24 and a DPDT toggle so I can, if I need to, add a straight DC input later as well. The case is made starting from an LRS75-24 case I found on thingiverse, then adjusted to my needs.One thing I did notice is that cranking the heat from cold seems to trigger OCP on the power supply, so I might tone down the PWM a bit. Not sure if that's just this clone handle, or if a genuine 907 heater would show similar results?