The cool thing about the 4017 is that you can add other 4017s and make the sequence longer (of course with more discrete parts): I saw the schematic youG ‚¬ re talking about. Oddly, this was one of the only 4017 cascading schematics I could find. I found that it was REALLY temperamental and more of a headache than it was worth at the time. Fir
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st off I had to change some of the resistor values before it even worked. Then it was only looping ONE 4017 sequence at 12 volts. At 5 volts it worked better, but would skip some steps. It was probably an error on my end, but I bread boarded it twice and it acted the same both times. My original thought was that I would combine 2 4017s together to make a 16 step sequence. That way I could get 8 distinct output pulses. If youG ‚¬ ve tried making a gate sequencer with the 4017 you probably know that you need to use every other step as an G ‚¬ OFFG ‚¬ step. So in an 8 step sequence, you only get 4 G ‚¬ ONG ‚¬ pulses. Anyway, as I mentioned, the circuit you mentioned above was acting real bonkersG ‚¬ so I investigated some other options, hence the AND gate output stage. it wight work to use a 555 as PWM. i have never done this myself. but it has a trigger input, and it can do PWM. so this might be a solution. although im totally unsure about it. look here hey, i don`t know anything about those AND gates, but i do know that if you use pin 7 to ground your 4017 ²s leds instead of the main ground you can get 10 relay trigger signals. Thats how ive done it in the past. I guess you don`t get the gate time control but the schematic is quite a bit easier. hey, i`ve been planning to build a sequencer for a while, and i think i`ve cracked the dual 4017 nut, allowing for 16 steps. I thought i`d post a rough outline as i`ve gotten...
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