Month: February 2018

  • Magnetic Loop – step by step

    Well, the replacement stepper controller chips arrived early this morning. Didn’t take too long to replace them and connect everything up for a test. The good news is that after a slight adjustment of VR2 the stepper appeared to be controlled by the rotary encoder. It made the right noises. Try as I may, I…

  • Magnetic loop progress

    Finally found some time to re-orientate the two transformers. I decided to remove the eight bypass 10nF capacitors to give my soldering iron more wriggle room to remove the transformers. The solder on the transformer pads needed some encouragement – in the form of more molten solder – to loosen up. This allowed me to…

  • Magnetic loop fault finding breakthrough

    Maybe my mistake has been not to refer more directly to the actual code. Over the last 24 hours I have been steadily working through the last two years of email conversations. Loftur keeps the group informed of each new version of the firmware and the newly added features. Sometimes he jumps the gun, but…