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

High-speed internet via airborne beams of light
17/09/2021 12:33 PM
Mosquitoes sucked up by traps that mimic breathing
17/09/2021 03:13 PM
Sir Clive Sinclair: Computing pioneer dies aged 81
16/09/2021 08:19 PM
File-sharing crackdowns from lawyers and police
16/09/2021 03:43 PM
OpenSea admits insider trading of NFTs it promoted
16/09/2021 01:12 PM
Bitcoin protests in El Salvador against cryptocurrency as legal tender
16/09/2021 12:55 AM
Facebook under fire over secret teen research
15/09/2021 12:06 PM
Microsoft's passwordless plans lets users switch to app-based login
15/09/2021 04:46 PM
TikTok faces privacy investigations by EU watchdog
15/09/2021 12:13 PM
Wikipedia blames pro-China infiltration for bans
16/09/2021 10:59 AM

Website by Neo   -   Hosted by Kieran O'Shea