[chbot] Robotics Group meeting, 5 Idris Rd, 6-30pm, Monday 16 Jan 2023

[Mark Atherton]

Hello everyone,

Good turnout with 20 attendees, and lots of huddles-of tech-talk. $25 + 
change (in gold, and flat-money) collected and transferred into the 
robotics loose-change jar (for later banking).

All sales from the trading table should go into the brown box on the 
wall, and are directly for the benefit of our host club, Christchurch 
Amateur Radio Club, NZART Branch 05.

Equipment donations are welcome for the trading table, but no CRT based 
product, printers, toner or items that are likely to be a disposal burden.

With thanks on behalf of the group,

Mark Atherton


Mark talked about resurrecting a 6800 system he designed in 1982(!). One 
of the issues has been that the UV erasable EPROMs have discharged and 
are reading 0xFF. Programming longevity for the devices is around 10yrs, 
after which time they need to be re-programmed.

Graham talked about finding a good home for some older professional 
stage-lighting. Recipient must not profit from the donation, so maybe a 
school, church, or amateur theater. Thoughts please.

David B brought in leaf and BMW EV motors, as well as some related EV 
electronics.

Andrew demonstrated Machine Control using MQTT. Demo was built using 
some home-cooked apps on surplus smartphones.

William talked about a home-made dehumidifier fabricated from a unit 
found on the kirbside.

Andrew E talked about photographing the moon through his 3d printed 
telescope.

Peter Harris talked about his induction hob repair project.

Robin talked about some of this greenhouse window-opening blues. Several 
alternate solutions were discussed; Robin is going to make some 
cardboard models...

Andrew talked about the BR05 Sugar Cube VFO project – he needs help with 
some hole cutting. He also talked about a DDS based signal source.