Introduction

This was a quick project I threw together to monitor the makerspace’s front door. We have a membership tier that doesn’t provide 24x7 access, but allows them to come in whenever a full member is present. This sensor pinged a channel on our Slack workspace to notify members when the space’s front door was unlocked. It also helped us officers realize when the door was left open!

This uses a adafruit huzzah esp8266 development board and a magnetic reed switch on the door. When the door opens, the reed switch closes and tells the esp8266 to connect to the wifi and send a message to Slack. The code has around a 30 second debounce in order to account for people opening and shutting the door quickly (moving stuff in and out)

I designed and lasercut a project box enclosure for it and assembled it above the door

Sage Peterson

My name is Sage. I make things and share them with others. You should too.