hey i'm all for whatever works. You can send me or i can send you. what parts are you looking for? I might have something you need.
I didn't see a video 100 0058 Bernard. I only saw the 100 0056 and 57. (those are the effects I like)
hey i'm all for whatever works. You can send me or i can send you. what parts are you looking for? I might have something you need.
I didn't see a video 100 0058 Bernard. I only saw the 100 0056 and 57. (those are the effects I like)
This is what Wendy's PWM looks like for me
Can do either or both, I can always use a few 555's, 4017's, TIP120, TIP125, enough to = about $ 15 so I can buy a circuit board & misc. parts & return postage.
Video takes a bit of searching, Jack Bernard is sometimes far down on the list to " active 5 days ago * 7 videos". Will have to remember to add a day every day.
You do not need 4022, 4017 just as good, I just had some22's & no 4017's.
Which version are you planning on, one of 4 on like Stream # 16, video 100 0056 ?
Were you able to find video 100 0058 ?
I wanted to get the 4022 for Stream #15 marquee 100 0056. This is perfect for my channel B (BLUE).
I also like 100 0057 and 100 0058 but I would like the 100 0057 a little faster in dimming in & out. This is perfect for my channel A (RED). I want to make actual PCB's this weekend.
ok cool. I really need to get Wendy's PWM wotking so I will try again today.I think you have it. Will look much better when LED's are in single file. With blue LED's with Vf around 3V, better go to 3 in series. If 1 mA is bright enough may not need LED drivers. 4022 or 4017 outputs have about 90 ohms internal impedance so the heavier the output is loaded the lower will be output V. Some examples @
12 V VDD:
I in mA___V
2.7_____11
4.7_____10.5
10.9____9.5
17.5____7.7
Assume strings of 3 in series, 6 strings in parallel @ 1 mA / string = 6 mA / output. 6 X 90 = .54 V, LED Vf 3V
X 3 = 9V. 12V- 9.54 = 2.46 V / .001 = 2.46 k or 2.4 k for current limiting R. Depending on real values of blue LED.
Wendy's modified PWM, 100 0057: To change period make R1 a pot. maybe 10K in series with 4.7K R.
ok cool. I really need to get Wendy's PWM wotking so I will try again today.
I think you have it. Will look much better when LED's are in single file. With blue LED's with Vf around 3V, better go to 3 in series. If 1 mA is bright enough may not need LED drivers. 4022 or 4017 outputs have about 90 ohms internal impedance so the heavier the output is loaded the lower will be output V. Some examples @
12 V VDD:
I in mA___V
2.7_____11
4.7_____10.5
10.9____9.5
17.5____7.7
Assume strings of 3 in series, 6 strings in parallel @ 1 mA / string = 6 mA / output. 6 X 90 = .54 V, LED Vf 3V
X 3 = 9V. 12V- 9.54 = 2.46 V / .001 = 2.46 k or 2.4 k for current limiting R. Depending on real values of blue LED.
Wendy's modified PWM, 100 0057: To change period make R1 a pot. maybe 10K in series with 4.7K R.
One down ( B ) two to go.
Do you mean 6 strings in parallel per channel?
Do you mean 6 strings in parallel per channel?
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