Workshop smoke alarm
I weld, in the workshop, forge, solder & heat stuff. The last smoke alarm wouldn't play nicely so I wacked it off the ceiling and put it outside on the window ledge. That was 8 years ago. I just found it. Battery was dead.
The alarm can be deactivated, while hot working, a blinking blue LED indicates the alarms' state (OFF), when you switch it back on, the alarm activates and the LED no longer flashes. This is a really easy electronics project for young players looking to get started in electronics.
Link source: https://knoba.wordpress.com/2018/06/...p-smoke-alarm/
Design files: knoba – Workshop Smoke Alarm Schematic – 2018.fzz
Fid (for lead came working & stained glass work)
Link source: https://knoba.wordpress.com/2018/06/17/fid
Design files: n/a
Credit all my tools to: knoba.wordpress.com , please, DIYer!
I thought a seal image (not the mammal or musician) would be cool too, with the same kind of message as the banner, maybe downloadable from homemadetools, with html code, for off-siters to put on their own sites...