Reddit reviews Krown Phone Flasher (LED)
We found 3 Reddit comments about Krown Phone Flasher (LED). Here are the top ones, ranked by their Reddit score.
AffordableEasy to installNo batteries requiredWorks with any phone, video phone and some PBX systemsOne year warranty
You're probably biting off more than you'll really want to chew with learning Arduino on a project like this.
Ring signal is 90VAC - 20Hz, which might be a bit tricky for you to detect without interfering with the line. I'd probably use a canned package for that. TI makes one (TCM1520A), but it's SMD. Want to learn soldering on a $12 IC?
Also, radios are a bit of a dark art. I'd probably do this with NRF24l01 radios (get the ones with external antennas, it's worth it if you want range beyond 50cm!), but expect to have to do a lot of screwing around to get them talking reliably.
Are you sure you wouldn't rather just buy some and put them where the phone jacks are?
Presented as a useful gadget: Krown Phone Flasher. While I hear perfectly fine out of one ear but when I am sleeping or wearing headphones my good ear is covered - so I just bought Krown Phone Flasher (LED) from Amazon for under $25 dollars. Also - does anyone know if this can be hooked up to speakers? It may help gamers see visual clues to sound cues in games?
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https://www.amazon.com/gp/product/B00DOAHD80/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
I hate to be a wet blanket on a DIY project, but:
Krown Phone Flasher -- $24.95
Alternately, if you have a flashing beacon you really like:
Telephone Ring Detector with Relay