Some have already suggested the Lego system, so maybe that's a good path. Before Lego's, I had lashed up a quick and dirty pneumatic system for keyboard actuation for almost no dollars. I bought a little gearmotor, mounted a cam wheel to it, and had that activate a cheap pneumatic valve. After running a cheap plastic pneumatic hose line into my shielded chamber, all I had to do was position and mount (duct tape) a small pneumatic cylinder near the keyboard that I wanted to activate. Of course, I was lucky to already have shop air plumbed into my lab. I bought the bits and pieces necessary from mail-order sources (it was pre-Google) and it was a handy little aid that worked forever and had zero EMI issues. True, it was a slow cyclic rate and I couldn't readily control the attack, decay and pressure. You could scale it up by adding several cams riding on the same cam wheel or add a few more cam wheels to produce a specific sequence of actuations.
Ed Price WB6WSN Chula Vista, CA USA From: Julian Jones [mailto:[email protected]] Sent: Tuesday, November 04, 2014 7:36 AM To: [email protected] Subject: [PSES] air activated finger probes I am looking to make up a simple pneumatic system to press a couple of keys on a keyboard and move a mouse. Has anyone made up such a kit ? Some years ago I looked at this and there seemed to be lots around, now searching on Google I can't find any, or my search parameters are wrong. Any input gratefully received. Rgds Julian Julian Jones Hursley EMC Services Tel: 023 8027 1111 ddi: 023 8024 0851 Mob: 07787 523 607 <mailto:[email protected]> [email protected] Trafalgar House, Trafalgar Close, Chandlers Ford EASTLEIGH, Hampshire, SO53 4BW Company Registration 3301279 - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) <http://www.ieee-pses.org/list.html> List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
