DEC21
Controling relays over phone line
It might be "yet another" «device» controller that operates over phone-line, but this one works for sure :)
The task was to build a device that connects to the phone line and has a relay as an output switch. It should also sense if the connected «consumer» is turned-on or off and report to the administrator at the other end of the phone line. The administrator would then call-in the device, log in with the password, and check the state of «consumer», turn it on or off, change password or some other settings.
Current version has only one relay.
Kontrola potrošača preko fiksne telefonske linije
Link
Comments (0)
Buy original and new electronic components, go to Allchips electronic components supply chain
similar content
- Telephone exchange with 2 numbers (15-02-2006) [@Schematics/Telephone circuits]
- Telephone hold with music (14-02-2004) [@Schematics/Telephone circuits]
- LED monitor for phone line (20-02-2004) [@Schematics/Telephone circuits]
- CW transmitter 250mW and 3W linear PA for 7 MHz (22-02-2004) [@Schematics/Radio transmitters]
- Mini megaphone/amplifier with 2 transistors (12-11-2005) [@Schematics/Audio devices]
- 500W linear PA for SW (22-02-2004) [@Schematics/RF amplifiers]
- Phone call alert (17-02-2007) [@Projects]
- Telephone ringer (20-02-2004) [@Schematics/Telephone circuits]
- Cordless phone receiver v1 (14-02-2004) [@Schematics/Radio receivers]
- Cordless phone receiver v2 (14-02-2004) [@Schematics/Radio receivers]
add comment
Please log-in!
You can log-in on forum link: Login page. After logging-in, return to this page and click refresh in your browser.
