Electronic To-Do List using Hall Effect Sensors -- The Learning Circuit 90

Matt — Wed, 13 Jan 2021 08:24:00 GMT

Current Revision posted to Documents by Matt on 1/13/2021 8:24:00 AM

Electronic To-Do List using Hall Effect Sensors

The Learning Circuit | element14 presents | Project Videos

www.youtube.com/watch

Hall effect sensors are non-mechanical switches that respond to the presence of an electrical field. Certain hall effect sensors are unipolar, meaning they will turn on in the presence of a magnet and will turn off when the magnetic field is removed. These also often only respond to one pole of a magnetic field. In this project, Karen uses this helpful characteristic of hall effect sensors to build an electronic To-Do List with chores that turn red when exposed to one side of a magnet, and green when exposed to the other side.

Supplemental Content:

Bonus Content: Extended Version: Electronic To-Do List using Hall Effect Sensors

Bill of Material:

Product Name	Manufacturer	Quantity	Buy KitBuy Kit
KINGBRIGHT LED, Green, Through Hole, T-3 (10mm), 20 mA, 2.2 V, 568 nm	KINGBRIGHT	6	Buy NowBuy Now
LED, Red, Through Hole, T-3 (10mm), 20 mA, 2 V, 625 nm	KINGBRIGHT	6	Buy NowBuy Now
BATTERY HOLDER 4 X AA, 6V, w/ switch, wire leads	OSEPP	1	Buy NowBuy Now
AA Batteries	Pro Elec	4	Buy NowBuy Now
Hall Effect Sensor, Switch, 25 mA, SIP, 3 Pins, 3.8 V, 24 V	Allegro	12	Buy NowBuy Now
Through Hole Resistor, 220 ohm, 400 mW, ± 1%	Vishay	12	Buy NowBuy Now
Magnets, Button, Rare Earth, 18mm x 3mm, Pack of 3, D01768D01768	Duratool	4	Buy NowBuy Now

Additional Parts:

Product Name
Steel Electrical Outlet Box with steel punchouts
Cup Hooks
1/4" plywood
1/8" plywood
3/4" velcro
Picture Frame
Hot Glue Gun

Tags: the_learning_circuit, e14presents_karencorbeill, hall_effect_sensors, e14_makerkaren

The Learning Circuit 90: Electronic To-Do List using Hall Effect Sensors

tariq.ahmad — Wed, 23 Jun 2021 13:42:55 GMT

Revision 1 posted to Documents by tariq.ahmad on 6/23/2021 1:42:55 PM