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 - Technology RSS feed

Reminders on rise as WhatsApp update deadline looms
13/05/2021 11:23 PM
'Huge shortage' in digital skills says Apprentice winner
14/05/2021 12:01 PM
US fuel pipeline 'paid hackers $5m in ransom'
14/05/2021 09:30 AM
Cyber attack 'most significant on Irish state'
14/05/2021 08:37 PM
IBM says chip shortage could last two years
13/05/2021 10:23 PM
Amazon set to hire 10,000 UK workers
14/05/2021 11:27 AM
James Charles fans 'send death threats' to producer
13/05/2021 12:02 PM
NHS tracing app 'prevented thousands of deaths'
13/05/2021 12:36 PM
Colonial hack: Biden orders tightening of cyber-defences
13/05/2021 12:25 PM
Victim of 'Elon Musk' Bitcoin scam loses home deposit
13/05/2021 02:59 PM


Website by Neo   -   Hosted by Kieran O'Shea