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 - Technology RSS feed

Facebook to hire 10,000 in EU to work on metaverse
18/10/2021 04:44 AM
Facebook denies weak performance on hateful content
18/10/2021 12:25 PM
Amazon's Jeff Bezos 'may have lied to Congress'
18/10/2021 07:44 PM
I get abuse and threats online - why can't it be stopped?
17/10/2021 11:56 PM
Apparently, it's the next big thing. What is the metaverse?
18/10/2021 09:22 AM
Self-driving Waymo cars clog up dead-end San Francisco street
15/10/2021 01:18 PM
Apple takes down Quran app in China
15/10/2021 12:50 PM
Sunderland University cyber-attack fix date unknown
15/10/2021 10:29 AM
Microsoft shutting down LinkedIn in China
14/10/2021 08:14 PM
YouTube U-turns over David Davis vaccination passports clip after protest
14/10/2021 05:50 PM

Website by Neo   -   Hosted by Kieran O'Shea