Objective Development Forums

I prefer that transmitter because I don't have to think about power source... I only had to change the battery after 3 years... depends on how often you press the button... That is one of the main concerns of course, I will use an ATtiny85V-10 for the transmitter with a 3V lithium coin cell. Accord...

If you only needs single button to use at the mailbox, why don't you use cheap wireless doorbell? Monitoring mailbox using computer? How many mail you will receive in a day? Just asking It's not about monitoring the mailbox, it's about receiving an e-mail when I get some mail or a package - where I...

I'm building a snail (regular) mail notificator using a cheap RF transmitter/receiver pair and ATtiny85's. I'm in the process of coding the receiver interface with a computer part. I discovered V-USB a long time ago and found it very interesting, but didn't have any use for it, now's the perfect tim...