Looking for someone to make this timer. I just need it personally for a process I do with a machine. Will pay for time and materials if it's not too high a cost. I want a two stage interval timer circuit with a simple sound and/or LED, that loops forever.
The infinite looping cycle looks like this:
Gong Gong Gong Gong Gong
| (7 seconds) | (7 seconds) | (7 seconds) | (7 seconds) | (14 seconds)
Potentiometers and/or the timing ranges:
If pots are used, the 7 and 14 second cycles are adjustable by two potentiometers. Once set, these timings will not be adjusted very often, so a small trimmer pot would be OK. It's not critical the seconds range of each pot, but my most probable use for the 7 second period is around the 4 to 10 second range. The 14 second cycle I might use mostly in the 9 to 16 second range. The turn range of the potentiometer should be sufficient that I can adjust in say 1/4 second intervals at least, fairly easily. It's all relative to my process, no accurate clock display is needed.
- The timing loop is four sets of 7 seconds followed by 14 seconds - with adjustable timing. There is no numeric display, so no clock chip is really needed, unless Arduino is involved, which is sort of overkill.
- A soft meditative GONG (or soft beep) plays at the beginning (or end) of each segment.
- The sound, or soft beep and/or LED lasts roughly 1/2 to 1 second - not critical.
- Runs on any DC voltage - does not matter.
- For flexible mounting, put the LED light on a 12" long pair of fine wires.
- A nice feature would be to have the LED light up on each Gong sound.
- Have a manual on/off button to disable the sound/speaker.
- The sound/speaker size does not matter. Preferably not a harsh sound like a piezo if a beep is used - gong sound preferred.
- No fancy packaging needed.
The infinite looping cycle looks like this:
Gong Gong Gong Gong Gong
| (7 seconds) | (7 seconds) | (7 seconds) | (7 seconds) | (14 seconds)
Potentiometers and/or the timing ranges:
If pots are used, the 7 and 14 second cycles are adjustable by two potentiometers. Once set, these timings will not be adjusted very often, so a small trimmer pot would be OK. It's not critical the seconds range of each pot, but my most probable use for the 7 second period is around the 4 to 10 second range. The 14 second cycle I might use mostly in the 9 to 16 second range. The turn range of the potentiometer should be sufficient that I can adjust in say 1/4 second intervals at least, fairly easily. It's all relative to my process, no accurate clock display is needed.