Garage Door Reminder
Status: Complete
Update: The battery life is too short so I need to revisit the firmware
I live in a pretty safe neighborhood, but I still did not like forgetting to put the garage door down at night. My brain is pretty hard to upgrade, so I decided to build a reminder device instead.
For wireless communication I designed a two part system, consisting of a transmitter/receiver from a table top RC car like these. A couple of years ago I purchased two of these for about $5 with some other items, so this was a cheap way to go wireless. The transmitter sends pulses when the garage door is up. The receiver blinks a bright green LED for 3 seconds every time it receives a pulse.
Receiver Section
The receiver from the car interrupts a sleeping ATtiny12 when it receives a pulse from the transmitter section.
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| Receiver module from car | Battery, RX module and AVr in enclosure | |
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| Enclosure with LED and power switch | ||
Transmitter Section
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| Transmitter module from car | Installed in enclosure |
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