This was just one of "those" projects that I did for fun. The first one that used a lot of very dim but expensive LEDs at that time.
The design is based on a string of six 4015 dual 4-bit shift registers cascaded into one big 48 bit one. It drives clusters of LEDs with buffer transistors.
If you enjoy my videos you can support the channel with a dollar for coffee, cookies and brighter LEDs at https://www.patreon.com/bigclive
The design is based on a string of six 4015 dual 4-bit shift registers cascaded into one big 48 bit one. It drives clusters of LEDs with buffer transistors.
If you enjoy my videos you can support the channel with a dollar for coffee, cookies and brighter LEDs at https://www.patreon.com/bigclive
Great effect
How did you manage to make this delay when the LEDs are fully lit? 🤔
Is this the seconds NE555 is for?
Just came to visit after the link posted in the livestream 07/05/2022 (DD.MM.YYYY). Reminds me of a fairground thing I made many years ago with strobe tubes and 1 bit shift registers to make a super long (must have been around 15m) travelling strobe light – That did have a PIC micro, and it made a pleasant ticking sound as the strobe lights fired. Used a dual flip flop per board; one for a shift register and one to generate the firing pulse for the trigger transformers. Unfortunately wasn't too reliable, something to do with the tubes being fragile and the opto triac not liking firing the trigger transformer too much. Good while it worked though, could have been used as a landing strip identifier, Maybe could make a low voltage version nowadays with super bright LED's instead of strobe tubes, not quite the same effect but would be much more reliable. Was housed in a very tough, ridged flexible tube, then siliconed for weather proofing.
This looks brilliant. Well done! Any idea how much current it draws when it's fully lit?
Could a 4017 Decade counter be used cascaded to other 4017's?
Very well done – we can imagine how much time it took to set up and how much work it took to get everything working so perfectly. Well, years ago we spared neither time nor effort to achieve even minimal results – the joy for successful projects was always great – today we would probably think 3 times more about whether it is actually worth it (and we would probably do it differently).
That’s awesome… I’ll be honest I wasn’t even born when you made this.. sorry Clive 🤔
I can just imagine a young clive smashing away at Dig Dug, Galaga, Asteroids or Tempest trying to get the high score lol…
If we give you the money to do it, will you open the arcade?
Sorry about the IC no.
Read 4015 instead 4511
Dear, the signature Clives has more than 48 LEDS but you have used 6 nos. 4511 is with 2×4 bits each IC which is total 48 bits.
Can you please share the connections diagram for the above sign showing how to drive the more than 48 LEDS.
Thanks in advance
You've inspired me to build a Merry Christmas sign with my grandson, based on this concept and design. I'm hoping to make an instructable out of it – if you don't mind. I'll obviously credit you with the inspiration and original design, and provide a link to the video. I'm going to use 74HC595 shift registers, and drive the clock timing and chase patterns from an Arduino sketch rather than the fixed pulses from a 555, and light the whole thing using LEDs salvaged from failed sets of solar powered outdoor Christmas lights. Thanks for all the great videos and your superbly dry sense of humour – keep 'em coming.