MAILBOX
A connected mailbox using a switch, nodeMCU, and 3.7V battery.
DIR Repository
- Started: May 2024
- Status: Working-ish
A switch is afixed to the side panel of a mailbox. When the mailbox
cover is closed the switch is depressed. When the cover is lifted the
switch is released, completing a circuit between the microcontroller's
3.3V supply and a GPIO pin set to wakeup when high. When this interupt
occurs the program connects to a access point, sends a TCP and/or UDP
message, and then returns to a sleep state.
Development
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WIP
Bugs
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Mailbox close event sometimes does not get received. Should run
tcpdump and see if host is receiving packet, but too slow to process.
Lessons learned
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