Gregory's Server
IBM Audible Random Timer lolwtfbbq thread, part 6 of however many.
R1 nearest the buzzer wires is a volume adjustment. I just realized that, and realized it's all the way down. Turned up this thing is SCREAMINGLY LOUD EVEN ON LOW.
R11 is a pitch adjustment for the alarm, and it's EXTREMELY touchy. Only about 5% of the range of the pot runs through audible frequencies, even just putting a finger on the pot will change the pitch significantly.
No idea what the 12-position rotary switch at SW2 does yet. Changing it doesn't seem to make any obvious difference so far. My theory is that switches between various resistor combinations to affect the time scale of the "random" events, but it's hard telling with so few data points so far.
IBM Audible Random Timer lolwtfbbq thread, part 7 of however many.
Non-Audible Random Musings
All the chip dates are 48th week of 1983, meaning this device was probably manufactured early 1984 or so.
There's a belt clip, so this thing is designed to be worn or at least carried on your person. The best any of us have been able to come up with it that this was a way to keep someone from hyperfocusing on something - you get lost in your work, and are off in the weeds looking at something but maybe not realizing how much time has elapsed while you've been hyperfocusing, and this thing might have been around to remind you of the passage of time without being annoying.
IBM Audible Random Timer lolwtfbbq thread, part 7 of however many.
Non-Audible Random Musings
All the chip dates are 48th week of 1983, meaning this device was probably manufactured early 1984 or so.
There's a belt clip, so this thing is designed to be worn or at least carried on your person. The best any of us have been able to come up with it that this was a way to keep someone from hyperfocusing on something - you get lost in your work, and are off in the weeds looking at something but maybe not...