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

The secretive US factory that lays bare the contradiction in Trump's America First plan
18/05/2025 09:55 PM
The inside story of a council held to ransom in cyber-attack
19/05/2025 01:26 AM
Apple boosts India's factory hopes - but a US-China deal could derail plans
18/05/2025 11:39 PM
UK driverless cars unlikely until 2027 - but Uber says it's ready now
18/05/2025 11:24 PM
A letter from the M&S hackers landed in my inbox - this is what happened next
18/05/2025 12:43 AM
Elton John brands government 'losers' over AI copyright plans
18/05/2025 05:50 AM
Tesco apologises after software issue hits website and app
16/05/2025 04:13 PM
Leading crypto firm Coinbase faces up to $400m hit from cyber attack
15/05/2025 03:19 PM
Co-op says shelves to be more fully stocked this weekend
14/05/2025 10:57 AM
Airbnb offers private chefs and massages as it revamps app
14/05/2025 03:58 AM


Website by Neo   -   Hosted by Kieran O'Shea