Gikfun CHA 81 LED Chaser Kit Build

Рет қаралды 675

10 ай бұрын

This is the best thru hole soldering practice kit you could hope for. It has around 130 components and a quality but busy PCB.
The instructions were fine although we chose to do the LEDS before the capacitors so they could lay flat while soldering them.
The schematic explains it all. It has two 4017 decade counter ICS and two 555 timers feeding a signal to them. Three buttons allow you to alter the connection with the second 555, a switch on a capacitor to change the speed and a third switch to give it diagonal controls as well as two potentiometers to control the display.
One 4017 is on the positive side of the LEDS and the rows and the other is on the negative side and the columns. So if you try to understand what is going on when it does a horizontal or vertical rastor that makes complete sense but when it goes diagonal you have to try to understand simple multiplexing.
For example if you want the LEDs in row 1 column 1 and row 2 column 2 why doesn't row 1 column 2 and row2 column 1 light? Yes that's multiplexing...
Lot's of fun with this kit.
Stay tuned:)

Пікірлер: 9

@azyfloof 9 ай бұрын

This looks like it'd be a lot of fun to add to a eurorack synth module, controlling the x and y with two CV inputs. Or maybe a granular synthesiser :D

@hannahmanaman 9 ай бұрын

Just bought this kit. It's my first time soldering so I hope I don't botch it

@bestamerica 5 ай бұрын

' coool nice LED kit... can change different color LED lights on the kit or not

@bestamerica 4 ай бұрын

' my 81 LED kit is finish and beautifully color LED plus all 81 LEDs lights stays on without flashers

@bestamerica 5 ай бұрын

' how can all 81 LEDs stays lights on... no move X / Y

@sharkhunter451 9 ай бұрын

Does the manufacturer have a pdf?

@magneticpropulsion2507 9 ай бұрын

Thanks for watching and commenting on the video. There's a barcode on the paper instructions that were packaged with the kit. However the provided information was adequate for successful assembly. It also includes a schematic. Hope you have a good experience with it.

@kreepyits-o7761 4 ай бұрын

Min didn't come with instructions 👎🏼and i notice the resistors are two different types on the color around them didn't know what color resistors goes on the inside or outside the board