Arduino-controlled checklist makes sure you don’t forget anything when leaving the house

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Arduino-controlled checklist makes sure you don’t forget anything when leaving the house

Arduino TeamJuly 1st, 2021

Redditor onemywaybackhome was having some issues remembering to grab certain items before he left the house, so they decided to create something to help. Their solution involves a short list placed within a 3D-printed enclosure, along with several red/green LEDs on the side. When something is yet to be gotten, its color is red, but pressing the button next to its entry will turn it green and mark it as ‘done.’

The current system uses an Arduino Nano to read in the states of each button, as well as keep track of which items have already been selected. If a button is detected as pressed, the MAX7219 LED display drivers will receive a command that sets an LED at the correct position to a certain color. The entire device is completely wireless and powered by a lithium-ion battery, which is recharged via a TP4056 module. 

You can read more about this project and see the demonstration video for it on Reddit or download the code and a schematic here.

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5 thoughts on “Arduino-controlled checklist makes sure you don’t forget anything when leaving the house

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