DIY Motion Activated Snow Globe -- The Learning Circuit 82

Matt — Wed, 26 Aug 2020 07:24:00 GMT

Current Revision posted to Documents by Matt on 8/26/2020 7:24:00 AM

DIY Motion Activated Snow Globe

The Learning Circuit | element14 presents | Project Videos

www.youtube.com/watch

As the usual follow up to the previous PIR lesson video, Karen shows how to use a PIR sensor in a project. This circuit uses a one-shot 555 timer to control a relay to turn on lights and fans to make a motion-activated snow globe. When motion is detected, the fans will blow snow around the light up tree inside the globe and then automatically shut off.

Bill of Materials

Product Name	Manufacturer	Quantity	Buy KitBuy Kit
LM555CN - 555 Timer, Oscillator & Pulse Generator IC, TTL Compatible, Astable, Monostable, 4.5 V to 16 V, DIP-8	ON SEMICONDUCTOR	1	Buy NowBuy Now
Through Hole Resistor, 10 kohm, 250 mW, ± 1%	TE Connectivity	2	Buy NowBuy Now
Ceramic Disc Capacitor, 0.01 µF, 100 V, ± 20%, 5 mm	Vishay	1	Buy NowBuy Now
Electrolytic Capacitor, 100 µF, 25 V, M Series, ± 20%, Radial Leaded, 6.3 mm	Vishay/Panasonic	1	Buy NowBuy Now
Trimpot, Single Turn, Cermet, Top Adjust, 100 kohm, Through Hole, 1 Turns, 3306P-1-1043306P-1-104	Bourns	1	Buy NowBuy Now
2N4401, BJT, NPN, 40 V, 250 MHz, 625 mW, 600 mA, 300 hFE	MULTICOMP PRO	1	Buy NowBuy Now
Tactile Switch, 6mm, Black, Tall, Top Actuated, Through Hole, Round Button, 12 VDC, 50mA	E-switch	1	Buy NowBuy Now
G5V-1-DC5G5V-1-DC5 Signal Relay, 5 VDC, SPDT, 1 A, G5V-1 Series, Through Hole, Non Latching	OMRON	1	Buy NowBuy Now
287-18001 PIR Sensor, 7 m, 5 V, 20 V, 120 °, 300 s	MCM	1	Buy NowBuy Now
RADIAL FAN, 60MM, 5VDC, 78L/MIN, 28DBA, HY_60Q05AP	SEPA	2	Buy NowBuy Now
Addressable RGB LEDs, Clear, 5mm, 5pk	MCM	1	Buy NowBuy Now
Through Hole Resistor, 220 ohm, 400 mW, ± 1%	Vishay	1	Buy NowBuy Now
DC Power Connector, Jack, 5 A, 2.1 mm, Through Hole Mount, Through Hole, FC68148	CLIFF ELECTRONIC COMPONENTS	1	Buy NowBuy Now
Wire-To-Board Terminal Block, 5.08 mm, 2 Positions, 24 AWG, 14 AWG, 1.5 mm², Screw	WEIDMULLER	4	Buy NowBuy Now
Prototype Board, Phenolic, 30 x 25 grid, 1.6 mm, 94 mm, 71 mm	Multicomp	1	Buy NowBuy Now
AC/DC Power Supply, ITE, 1 Output, 10 W, 5 V, 2 A, 28-19317	PRO ELEC	1	Buy NowBuy Now
Board-To-Board Connector, 2.54 mm, 4 Contacts, Male Header, 1 Rows	Multicomp	1	Buy NowBuy Now

Additional Parts:

Product Name
4.5VDC LED product (White RGB LED tree from Dollar Tree)
Clear tube or globe with large opening
small styrofoam "snow" balls
Wire mesh (mine was made from a kitchen pan splatter screen)

Tags: monostable, one-shot timer, snow globe, 555 timer, motion sensor, motion activated, christmas, pir sensor

The Learning Circuit 82: DIY Motion Activated Snow Globe

tariq.ahmad — Wed, 27 Jan 2021 14:33:56 GMT

Revision 1 posted to Documents by tariq.ahmad on 1/27/2021 2:33:56 PM