Things used in this project

Hardware components:
Particle Spark Core
SeeedStudio Grove Rotary Encoder
Adafruit industries ada161 image 75px
Photo resistor
Adafruit industries ada258 image 75px
Li-Ion Battery 1000mAh
Adafruit IR Break Beam Sensor - 3mm LEDs
SparkFun Load Cell Amplifier - HX711
SparkFun Load Cell - 10kg, Straight Bar (TAL220)
SPDT Lever Switch
Single Cell Lithium Ion Battery Charger (MCP73831)
Software apps and online services:
Ha 2up iot
Amazon Web Services AWS IoT
IFTTT Maker service
Amazon Web Services Amazon DRS
Hand tools and fabrication machines:
3D Printer (generic)

Custom parts and enclosures


Smart Drawer Schematic
Full schematic professionally hand drawn in TylerEDA


Particle Core Firmware
firmware for the Particle Core
DRS Webserver
Code for registering with Dash Replenishment Service.


Tyler Spadgenske

Aspiring entrepreneur teaching myself engineering while sharing my designs and ideas along the way.

Thanks to Ravi Butani.


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