Infinity Mirror Beating Heart with Thermistors -- The Learning Circuit 88

Matt — Wed, 23 Dec 2020 08:24:00 GMT

Current Revision posted to Documents by Matt on 12/23/2020 8:24:00 AM

Infinity Mirror Beating Heart with Thermistors

The Learning Circuit | element14 presents | Project Videos

www.youtube.com/watch

In this episode of the Learning Circuit, Karen opens up her heart to us. Literally. Karen shows a fun new way to use a thermistor in a project. Using a thermistor as a variable resistor in an astable 555 timer circuit, Karen is able to create a visual “heartbeat” that changes speed in response to temperature changes. Check out this cool infinity mirror LED project and how Karen shows yet again, that fun and interesting projects can be made with a few simple, and affordable components.

Bill of Material:

Product Name	Manufacturer	Quantity	Buy KitBuy Kit
Prototype Board, Phenolic, 1.6 mm, 45 mm, 91 mm, (2) small	Multicomp	1	Buy NowBuy Now
NE555PNE555P - Single Precision Timer in DIP-8 Package, 500kHz, 4.5V - 16V	TEXAS INSTRUMENTS	1	Buy NowBuy Now
Thermistor, NTC, 100 kohm, NTCLE Series, 4190 K, -40 °C to 125 °C, Through Hole, Radial Leaded	Vishay	1	Buy NowBuy Now
Through Hole Resistor, 100 kohm, 500 mW, ± 2%, Axial Leaded, 250 V	Vishay	1	Buy NowBuy Now
Ceramic Disc Capacitor, 0.01 µF, 100 V, ± 20%, 5 mm	Vishay	1	Buy NowBuy Now
Electrolytic Capacitor, Miniature, 4.7 µF, 50 V, 515D Series, ± 20%, Radial Leaded	Vishay	1	Buy NowBuy Now
AA Batteries	Pro Elec	3	Buy NowBuy Now

Additional Parts:

Product Name
4.5VDC Heart with built-in LEDs, battery pack, and power switch.

Tags: e14presents_karencorbeill, temperature, 555 timer, astable, e14_makerkaren, thermistor, variable resistor, heart light, infinity mirror

The Learning Circuit 88: Infinity Mirror Beating Heart with Thermistors

tariq.ahmad — Wed, 12 May 2021 14:00:36 GMT

Revision 1 posted to Documents by tariq.ahmad on 5/12/2021 2:00:36 PM