Category Archives: Projects

I think it must be a short somewhere between some of the tracks. This evening I’ve built a new board from the ground up, plugged in the same Nano and stepper driver and it’s running “blink” fine. A small part … Continue reading →

Having finished the circuit board I plugged in the Nano and motor controller and connected it to a USB port (without any other power source connected). The power LED lit on the Nano, but nothing else happened and I wasn’t … Continue reading →

I now have almost all the components in place. The large diode at the top left wasn’t in the original plan I worked from. That’s the reverse voltage protection diode. Obviously no-one, least of all me, is ever going to … Continue reading →

In the end I couldn’t find a single application that would do what I wanted, so I just decided to start cutting tracks and see where I ended up 🙂 And then spent a happy hour or two soldering in … Continue reading →

All the parts that I didn’t already arrived, so I need to get on with laying out the stripboard. I found what looks to be quite a handy tool for doing that last night (it’s probably simple enough to do … Continue reading →

The first parts have arrived: a pair of NEMA17 stepper motors with 27:1 reduction gearboxes.

I’ve done a bit of reading and messing about with GIMP and this is what I think I plan to build: I believe I understand pretty much all of the circuit now. The resistor network to the left of the … Continue reading →

I have now finished bench-testing my third dew controller (had to wait for another humidity sensor to arrive as the one I had appears to have been faulty). So, I think it’s time to start looking at Robert’s focuser controller. … Continue reading →