whereswally606
100 kW
So I had ago at putting a digital pot 10k into a Chinese scr. I desoldered the 500k 2w ohm pot and soldered a 3 wire breakout to go to my breadboard. I then wired up the digital pot to the nano and to the scr. It had a looping code which continuously turned the wiper up to 128 and back down to 0.
However when I went to test it on a router, it didn't appear to work and I'm guessing it's because the pot that came out was for 500k and this digital pot is 10k.
I wanted to double check that I'd uploaded the code so I did something stupid which was plug the nano back into my pc before unplugging the mains. Big spark, dead nano and for a moment thought I'd killed my pc. However luckily was just the RCD tripped to cut the mains power to everything.
So plan c is I have a spare 5 wire stepper motor and so I've just bought a uln2003 driver for it to use it on the nano. I will use the stepper to turn the 500k pot mechanically which will allow me to use my pc to monitor the serial of the nano in real time and not have to use the ropey Nokia LCD for output. I know this is a rube Goldberg approach but I think it's the safest for me right now and I know it will work.
Plan d is to build one of Andy browns through hole smd reflow controller boards. But I hope I can avoid that.
Still not received the new PCBs from pcbway as they are delivering to work and I'm not there till the new year. Hopefully January will be more productive.
However when I went to test it on a router, it didn't appear to work and I'm guessing it's because the pot that came out was for 500k and this digital pot is 10k.
I wanted to double check that I'd uploaded the code so I did something stupid which was plug the nano back into my pc before unplugging the mains. Big spark, dead nano and for a moment thought I'd killed my pc. However luckily was just the RCD tripped to cut the mains power to everything.
So plan c is I have a spare 5 wire stepper motor and so I've just bought a uln2003 driver for it to use it on the nano. I will use the stepper to turn the 500k pot mechanically which will allow me to use my pc to monitor the serial of the nano in real time and not have to use the ropey Nokia LCD for output. I know this is a rube Goldberg approach but I think it's the safest for me right now and I know it will work.
Plan d is to build one of Andy browns through hole smd reflow controller boards. But I hope I can avoid that.
Still not received the new PCBs from pcbway as they are delivering to work and I'm not there till the new year. Hopefully January will be more productive.