---
product_id: 103985430
title: "MK101-VP Flashing LED Sweetheart Kit, 1.3\" x 2.3\" x 1.3\" Size"
brand: "velleman"
price: "€ 19.74"
currency: EUR
in_stock: true
reviews_count: 3
url: https://www.desertcart.hr/products/103985430-mk101-vp-flashing-led-sweetheart-kit-1-3-x-2
store_origin: HR
region: Croatia
---

# 25 Red LEDs 46 total pieces Requires 9V battery MK101-VP Flashing LED Sweetheart Kit, 1.3" x 2.3" x 1.3" Size

**Brand:** velleman
**Price:** € 19.74
**Availability:** ✅ In Stock

## Summary

> ✨ Illuminate Your Imagination with Every Flicker!

## Quick Answers

- **What is this?** MK101-VP Flashing LED Sweetheart Kit, 1.3" x 2.3" x 1.3" Size by velleman
- **How much does it cost?** € 19.74 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/103985430-mk101-vp-flashing-led-sweetheart-kit-1-3-x-2)

## Best For

- velleman enthusiasts

## Why This Product

- Trusted velleman brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Portable:** Perfectly sized at 1.3" x 2.3" x 1.3" for easy transport.
- • **DIY Fun for Everyone:** Engage in a hands-on project that sparks joy and innovation.
- • **Light Up Your Creativity:** Unleash your inner designer with 25 vibrant red LEDs!
- • **Battery-Powered Brilliance:** Requires a 9V battery (not included) for ultimate flexibility.
- • **Complete Kit for Easy Assembly:** Includes 46 pieces to make your DIY experience seamless.

## Overview

The Velleman MK101-VP Flashing LED Sweetheart Kit is a compact DIY project featuring 25 red LEDs and 46 total pieces, designed to spark creativity and provide a fun, hands-on experience. Perfect for makers and hobbyists, this kit requires a 9V battery (not included) to bring your designs to life.

## Description

VellemanMK101-VP Flashing LED Sweetheart Kit, 1.3" x 2.3" x 1.3" Size

## Features

- 25 T1 (3mm) Red LEDs
- Requires 9V battery (Not included)
- 46 total pieces
- Size: 1.3" x 2.3" x 1.3"

## Images

![MK101-VP Flashing LED Sweetheart Kit, 1.3" x 2.3" x 1.3" Size - Image 1](https://m.media-amazon.com/images/I/71JjnerJHOL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ 







  
  
    Close up solder work
  

*by A***R on Reviewed in the United States on March 12, 2022*

Some of the solder pads are close together making it easy for a solder bridge to occur. A quick build, but be careful. Works well after troubleshooting.

### ⭐⭐⭐⭐⭐ 







  
  
    A fun build, but a slight challenge.
  

*by B***D on Reviewed in the United States on February 15, 2021*

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     I enjoy building these little hobby kits. Velleman makes quite good ones and I've built close to a dozen of them. They have all worked as advertised.One thing I don't like is things that blink and flash at a fast rate. I find it annoying. This heart is one of those. So I changed it. I've been building electronics for about 55 years and am not afraid to modify things.This kit, as delivered, will blink at a rate of about twice per second. That's about normal heartbeat rate, but too fast for me. The flash rate is determined by R8 and R9. R8 is 33k and controls the time on the inner heart. R9 is 100k and controls the outer heart.I changed both to 270k which made both hearts light up for the same amount of time. They also slowed the rate to about 2.5 seconds for each heart. I find that much more soothing, as did my wife for whom it was a Valentine's Day present. She loves it. It doesn't imitate a real heartbeat as it does with the original resistor values, but we're both fine with that.I also added a switch to the 9V line from the battery so I didn't have to pull the battery to shut it off. I used JB Weld to mount it. Most of the Velleman kits don't have a switch, but for most of them that's not a big deal.The slight challenge was that most of the solder pads are small and very close together. You'll need a very small tip on your soldering pencil to make it easy. My soldering pencil has a 1/8" tip which is just a bit too large for this kit but having done this sort of thing for decades, I had no problems. Just be careful of a solder bridge between two pads, especially for the LEDs.Other than that, enjoy. Have fun.

### ⭐⭐⭐⭐⭐ 







  
    Le encantó a mi novia
  
  

*by F***O on Reviewed in Mexico on January 16, 2018*

Lo soldé para como regalo para mi novia, un regalo novedoso y original.Requiere conocimientos básicos sobre soldadura en PCB

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**Shop now:** [https://www.desertcart.hr/products/103985430-mk101-vp-flashing-led-sweetheart-kit-1-3-x-2](https://www.desertcart.hr/products/103985430-mk101-vp-flashing-led-sweetheart-kit-1-3-x-2)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-04*