logo

electronics logo

phone busy

Phone Busy Indicator

 

This simple circuit gives a clear indication when the phone is use - handy for those who still need dial-up for Internet access.

 

clock module

Tiny Real Time Clock (RTC) I2C module - DS1307 AT24C32 TE187

 

An article on a DS1307 based I2C module which can be used with Arduino programmable microcontrollers. These seem to be sold with non-rechargeable batteries, but charging circuitry for rechargeable batteries, which means some work is needed to improve the battery utilization.

 

BBC News RSS feed

I won't put my relationships online again, says Lilly Sabri
19/04/2025 01:29 AM
Designed in US, made in China: Why Apple is stuck
18/04/2025 10:56 PM
Artists push back against AI dolls with their own creations
19/04/2025 12:39 AM
Nvidia: The AI chip giant caught between US and China
18/04/2025 08:42 AM
Google has illegal advertising monopoly, judge rules
17/04/2025 09:15 PM
Discord's face scanning age checks 'start of a bigger shift'
17/04/2025 06:13 PM
Tesla whistleblower wins latest legal battle in fight against Musk
17/04/2025 09:41 AM
'Scammers used fake app to steal from me in person'
17/04/2025 05:25 AM
Spotify 'back and functioning normally' after global outage
16/04/2025 04:54 PM
Shein and Temu warn tariffs will raise prices in US
17/04/2025 05:04 AM


Website by Neo   -   Hosted by Kieran O'Shea