LED candles that can be lit with a real flame

Board Type :		GerberFile :
Layer :		Dimensions :
PCB Qty :	5 40 200 500 1500 4500 7500 10 50 250 600 2000 5000 8000 15 75 300 700 2500 5500 20 100 350 800 3000 6000 25 125 400 900 3500 6500 30 150 450 1000 4000 7000	Different PCB Design
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Copper Weight :	1 oz	Production Time :
Total: US $
Elecrow community is a shared platform and we are not responsible for any design issues.

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NO. OF UNIQUE PARTS:		NO. of Components:
Assembly Cost: US $
Elecrow community is a shared platform and we are not responsible for any design issues.

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Total: US $12.99
Elecrow community is a shared platform and we are not responsible for any design issues.

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Acrylic Qty :	5 40 200 500 10 50 250 600 15 75 300 700 20 100 350 800 25 125 400 900 30 150 450 1000	Acrylic Thickness:
Acrylic Color:		Total: US $12.99
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Type of Aluminum:		Surface Finish:	None
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Total: US $12.99
Elecrow community is a shared platform and we are not responsible for any design issues.

Miroslav Hancar

Published: Oct 27,2024

LED candles that can be lit with a real flame

These candles flicker like a real candles and can be activated with an actual flame

Attribution-ShareAlike (CC BY-SA)

Story

Flame (or heat) detection relies on the temperature dependence of the LED's forward voltage. This voltage is measured (at very low LED current) by the internal ADC of the PIC12F1501. If the LED voltage remains below a predefined threshold for a sufficient period, the LEDs activate and begin to flicker. The large candle, containing four LEDs, is powered by a Li-Ion battery and includes a USB charger (MCP73831). The small candle, equipped with a single LED, is powered by a CR2032 or LIR2032 battery. The small candle can even be extinguished with a touch of your fingers.