The evolution of one of my first ever projects, this upgrade miniaturizes, updates, and improves on the first version. Now with Wi-Fi, the reminder can set its own clock using NTP, send reminders with IFTTT, and integrate with Home Assistant or other platforms. A built-in IR sensor detects when the food container lid is opened in front of it, or an optional external sensor can be connected to utilize a magnetic reed switch or button.
Files
Dog Food v2 Cover No IR.stl
Version without LED holes for using external sensor
Standard Tesselated Geometry -
13.36 kB -
06/10/2025 at 16:28
Print the base and screen bracket, and one of the covers (with or without IR LED holes).
2
Reverse IR LEDs
The IR LEDs on most of the sensors are pointed along the plane of the PCB. Remove the LEDs (paying attention to polarity as it's not normally marked on the PCB) and reinstall them on the back perpendicular to the PCB. The sensitivity dial should be on the opposite side of the LEDs now.
3
Insert Heat Nuts
Use a soldering iron or heat set tool to install the 7 3x3 heat set inserts into the screen bracket and base.