Heartbeat – Pulsing Heart LED Soldering Kit for Beginners

€7.98*

Available, delivery time: 1-3 days

Product number: blink23185

Product information "Heartbeat – Pulsing Heart LED Soldering Kit for Beginners"

The Heartbeat soldering kit is a heart-shaped PCB with a red 5 mm LED in the centre that pulses at regular intervals. The circuit is built from discrete components – no programming, just classic electronics.

The board has a red solder mask, gold edge, and a pixelated heart shape that looks like it came from a classic video game. At the centre sits a large red LED that simulates a heartbeat. The circuit is based on the "eternal blinker" design by Malte Pöggel and Burkhard Kainka. It uses an astable multivibrator: a 100 µF electrolytic capacitor charges slowly with low current and is discharged in a short pulse through the LED, which also provides the necessary voltage boost so the LED can light brightly from a single cell.

The circuit is very low power and runs for about 1–2 months on a single CR2032 coin cell. The heart is an ideal gift for someone special and works great as a Valentine's Day present. Despite the discrete design, the parts are easy to solder and the kit is suitable for beginners.

The kit includes all required components (battery not included) and a detailed instruction sheet. Contents: 7 resistors, 3 transistors, 1 LED, 2 capacitors, 1 PCB, 1 battery holder.

More background and circuit details: Heartbeat THT soldering kit on blinkyparts Wiki.

Build Time:	20-40 Minutes
Difficulty:	Easy
Manual and iteractive board:	https://binary-kitchen.github.io/SolderingTutorial/
Needed batteries (not inclueded):	CR2032 coin cell / LIR2032 rechargeable coin cell
Target group:	Children, Grownup, Nerd

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