10 ms·
No-Tifier (2017)
- jeffreygoesto 10mo agoA NE555 could be sufficient and even more reductionist. =;-) Circuit example https://theorycircuit.com/ic-555-ic-741/adjustable-duty-cycle-pwm-generator-circuit/ https://theorycircuit.com/ic-555-ic-741/adjustable-duty-cycl...
- atoav 10mo agoA CD40106 could do the same and would even be more reductionist (and uses less current).
- jeffreygoesto 10mo agoTouché ;)
- tgsovlerkhgsel 10mo agoHow much current would the capacitor/resistor attached to it use? Modern microcontrollers are insanely power efficient. An ESP32 in "light sleep" (which would be sufficient to serve timer routines) is said to consume <1 mA (at 3.3V), down to ~10 uA (microamps!) in "deep sleep". In other words, 1 year in deep sleep is 315 ampere-seconds or less than 100 mAh. Obviously it's irrelevant in this use case (where the goal is running a motor every wake-up cycle), but nowadays, as absurd as it looks, being power-constrained isn't necessarily a reason to not slap something on it that happens to also be able to do cryptography, connect to WiFi and make HTTPS requests.
- tgsovlerkhgsel 10mo agoThis does the typical "two short buzzes with a break in between". I think that would be hard with a singe NE555, and of course much more annoying/complicated to fine-tune. Also, the random delay between the notifications.
- jeffreygoesto 10mo agoAh, right. With two buzzes it gets complicated again.
- taneq 10mo agoThat’s brilliant. A phone’nt, if you will.
- teddyh 10mo agoNon-joke version: <https://www.creativeapplications.net/project/durr-shivering-bracelet-that-investigates-our-perception-time/ https://www.creativeapplications.net/project/durr-shivering-...> Discussion: <https://news.ycombinator.com/item?id=7007731 https://news.ycombinator.com/item?id=7007731>
- smitty1e 10mo agoReally needs an update, the No-Tiff-ier, that also doesn't display an image, in addition to the other features. For 2026, the No-Tiff-AIer extension is planned to also not bury you in slop.
- treetalker 10mo ago> The medium is the massage.
- tdeck 10mo agoThis is great for when I'm on the train and don't want to accidentally glance at another person. I can just hold the rectangle in my hand and stare at it!