Electronics SIG meeting 15th November at 8 pm UK time

[Graeme Dunbar]

 Our next meeting is:

Topic: Electronics SIG - Graeme Dunbar

Time: Nov 15, 2023 20:00 London

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https://us06web.zoom.us/j/87527822112?pwd=4OCDOhLTIjBtWNM3DJxlbVYbTaxcbR.1

Meeting ID: 875 2782 2112

Passcode: 523547

[Hugh Norwood]

Electronics SIG Zoom meeting 15 Nov 23

{I thought you might be interested in the raneg of subjects we cover in our SIG meeting!  HN}

Present Graeme Dunbar, Stephen Rainsbury, Hugh Norwood, David Jones
Apologies from David Cooper

Graeme reported on the recent Aberdeen show, where a few of the ScOONS modules were on the table and working well.

Followed by a discussion on modules and the various types and methods of connecting track across the ends.

Graeme has been looking at servo actuated points and devised a parallel motion linkage using parallel leaf springs, that gives no backlash. A servo fitted with a cam will drive the device. He has been having fun researching cams and working out the ideal one for the project (tanh, anyone?)

We discussed wiring, lead-free solder vs the old sort, and grew misty-eyed over wire-wrap but less so over wiring pencils(!)

Stephen talked about the tribulations encountered with getting a Raspberry Pi to micro-step a stepping motor and how not to design the connection stakes on a circuit board (to make it eay to solder to stripboard).

We discussed how newer versions of Windows seems to have rendered some useful devices at the very least difficult to use - such as a range of portable data loggers used in schools. And the USB to serial convertor cable used to program the PicAXE range of chips

~ H Norwood

[Dave Cooper]

Very interested to talk to Hugh and see his layout at the recent Bristol show. Also, I enjoyed the article in the latest 009 News. My wife, at least, has heard of Terry Pratchett ! Must get back to some Arduino projects now and see if I can get my 'scope working. Will try harder to get to the next SIG meeting...

[Hugh Norwood]

Very interested to talk to Hugh and see his layout at the recent Bristol show. Also, I enjoyed the article in the latest 009 News. My wife, at least, has heard of Terry Pratchett ! Must get back to some Arduino projects now and see if I can get my 'scope working. Will try harder to get to the next SIG meeting...

Oh, thank you for your kind comments!