NOT WORKING - NEED HELP PLEASE Flashing LED Sweetheart DIY Kit

163

05:03:31

This is the Flashing LED Sweetheart DIY Kit from Velleman-Kit

I can get it to work by increasing the voltage, but the actual physical kit is powered by a 9V battery.  What am I missing?

published 8 years ago

BillyT

8 years ago

Maxed out .... http://everycircuit.com/circuit/4817152479854592

BillyT

8 years ago

The kits resistor values are all wrong. The led resistors need to be 42 Ohms and the bias Resistors about 10k.

Blearycolt9310

8 years ago

You need more volts

voltohm

8 years ago

Try to increase the Voltage.

voltohm

8 years ago

Decreasce the valute of resistance.

Suriyana

8 years ago

Decrease the 1.2K resistor to 100 Ohm

xxxxyx

8 years ago

Hey you need to increase the volts or if you just wanted to use 9v battery..use step boost converter..buy it online

BillyT

8 years ago

Resistors adjusted as per earlier text, capacitor adjusted to allow better visibility at 1 sec. This is all assuming that the Leds are 2V and 20 mA, check that out and adjust the resistors to suit. http://everycircuit.com/circuit/5106671125004288

brianflores

8 years ago

Thanks for all the input guys. But this is not how it works in real life. I must be missing something with the LED values, as voltage, resisters, and capacitors are dead on. Here is the schematic and parts list. http://www.vellemanusa.com/downloads/0/minikits/manuals/manual_mk101.pdf

ciaoii

8 years ago

Decrease the 1.2K resistor a 20 Ohm

rich11292000

8 years ago

l-934lid LED 1.8 volts @ 5mA. 👍

rich11292000

8 years ago

http://everycircuit.com/circuit/4957889968209920

lmccoig

8 years ago

Circuit in simulator works at 56 volts DC. Many published circuits are wrong and simulator software quickly shows problems.

brianflores

8 years ago

But it is working in real life, with confirmed schematic parts. It must be the LEDs.

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