Old Sockets on a Light Barrier

Yesterday I worked on a photo eye barrier on an Itotec guillotine. A Currie & Co model PE330. The green LED which indicates the barrier is uninterrupted was out and stopping the blade from coming down. For guillotines the light barrier...

Taking control of a Phenix Recloser

The old DOS PC running a Phenix Recloser for one of our customers gave up the ghost recently. The use of computer hardware, software and machine hardware means that everything needs to work for anything to work at all. This can make it qui...

Bruce walks the Kepler track

To start off the year our resident intrepid explorer, Bruce, has completed a hike of the Kepler track in New Zealand. Over 4 days Bruce, with his daughter and family friends, walked the 60km circular path near Te Anau on the South Island. T...

OpenBSD in a wire bender

The last couple of days have been spent repairing a servo motor drive from a Macsoft 3D wire bender. Some capacitors had failed, damaging the circuit board and causing two of the IGBT's to fail. We were able to get the machine going again f...

How to pick the power rating of a new UPS

One of the most important decisions when choosing a new UPS is selecting what power rating you need. The power rating limits how much load you can draw from the UPS e.g. how many computers you can use it to protect. It also has an effect o...

Machine Learning for Steady State Measurements

I had a problem... I indicated that I could produce an accurate chart of motor current flowing as a result of applied motor voltage on a motor fan setup. It was a DC motor with hall effect DC current measurement. Conveniently the applied v...