im using an old micronta test probe. 55 timer pin 3 output is high and the led indicator is steady on. all vcc & gnd pins check ok. u2 pin 14 is H and all pin 9's are L

forgot to ask, does it matter that i dont have a cmos timer?

 

Re 221: You asked & I said 555 was fine, either form of 555 is good, but if pin 3 is solid high, not good.
If pins 2 & 6 are high, 555 probably bad. Should be no connection to pin 7.
For future consideration: Reset on power up circuit will not work as is. Gate V should be about22V to turn on.
For same function I use PNP FET but needs a low on gate to turn on.

 

forgot to ask, does it matter that i dont have a cmos timer?

ok im trashing the breadboard since im finding issues with connections. i'm back to the etched board. timer is working fine. U2 pin 9 its pulsing H & L and looks like the outputs are pulsing. On the U2 & U3 outputs to the transistor base, do I connect the collector to the anode of the led's? On U4 & U5 i have the outputs going thru a 2.2k to the base of the NPN and the collector to the anode of the LEDs

 

First question, transistor, like Q1, collectors all go to Vcc, emitters to LED anodes. Q17 series all have emitters common to current regulator, collectors to LED cathodes. Dig out the 100 LED chaser schematic, it is easier to see the connections.

 

I'm changing the name of the Lock Out circuit to Channel Selector with its 3 start switches, Channel A, red for 20 s. of red throbbing LEDs, Channel B, blue for 20 s. of rippling stream, & Channel C, green , 20 s. of single LED chaser, labeling as desired.
Stream # 12 modified to Stream # 13, to drop internal 20 s. timer as Channel Selector already supplies one. Clearing the SRs is now done at turn on.
U-2 had to be moved to be part of Channel Selector, leaving only one invertor required, U-F1, which might be changed to a NPN transistor, eliminating the 4011.

 

New Channel Selector from old Lockout. P ch. FET's can go on Channel Selector or with individual channels, dealer's choice. All 3 555's are reset at power-up or by pressing Reset SW at any time. C4 1uF to 20 uF.
When one channel is selected, other 2 are held at reset.
D, 4011, NAND gate is used as invertor as you have some, my pref. would be 4049 as alternate.

 

New Channel Selector from old Lockout. P ch. FET's can go on Channel Selector or with individual channels, dealer's choice. All 3 555's are reset at power-up or by pressing Reset SW at any time. C4 1uF to 20 uF.
When one channel is selected, other 2 are held at reset.
D, 4011, NAND gate is used as invertor as you have some, my pref. would be 4049 as alternate.View attachment 106075

 

hi Bernard, I'm working on putting your circuits together. I was doing a lot of thinking and i want to break up some of the sections on the map.example, instead of firing 100 or 300 led's at once i want to break it up into smaller circuit sections. So if I press Red Button, a few separate circuits will fire maybe 25 led's providing a branching effect of the main river and its tributaries. Like looking at all the blood vessels in the body. What do you thing of this idea? I can use your circuit design for the different channels and different effect. Maybe more chips then planned but the outcome might be worth it. I'm gonna breadboard your circuit in the morning.

 

Do I like the new idea- No because it requires many changes & description is a bit fuzzy.

 

Do I like the new idea- No because it requires many changes & description is a bit fuzzy.

kind like this animation but to all the branches of blood vessels in the circulatory syste. http://www.cengage.com/biology/discipline_content/animations/blood_circulation.html

im gonna just stick to your circuit and make it work

 

In your spare time you might make a loop of 3, 555s, each driving 1 to 40 parallel LEDs with resistors. Using low side drive there would be 2 LEDs on, 1 off, giving the appearance of movement, like blood flowing- or water?

 

In your spare time you might make a loop of 3, 555s, each driving 1 to 40 parallel LEDs with resistors. Using low side drive there would be 2 LEDs on, 1 off, giving the appearance of movement, like blood flowing- or water?

that sounds cool. i will research for a schematic to check it out thx

 

I'm changing the name of the Lock Out circuit to Channel Selector with its 3 start switches, Channel A, red for 20 s. of red throbbing LEDs, Channel B, blue for 20 s. of rippling stream, & Channel C, green , 20 s. of single LED chaser, labeling as desired.View attachment 106030
Stream # 12 modified to Stream # 13, to drop internal 20 s. timer as Channel Selector already supplies one. Clearing the SRs is now done at turn on.
U-2 had to be moved to be part of Channel Selector, leaving only one invertor required, U-F1, which might be changed to a NPN transistor, eliminating the 4011.

So the output of the channel selector goes to the gate of P channel. Do you mean Pin 3 of U2? What about the clock going to the 4094'S

 

On Stream # 13, drop U2, R1 & R2 as they are now part of the Channel Selector. If Stream # 13 is Channel B, Then MOSFET gate goes to D2-4 via R13.
If Ch. B is selected, power is supplied for 20 sec. Clock U D starts & runs for 20 sec., first 1/2 sec fast, remainder as set by pot & C5.
Post 232, schematic almost ready to scan in AM. Presuming Vdd of 12V, it would be possible to use series
parallel connection of LEDs. With 4 red LEDs in series, 250 LEDs should work.

 

Here is the schematic for a traveling blank LED string, might also be known as Marque Lights?
Travel speed is about 10 cm / sec. set by R2-4-6 & 1 uF Cs. Sub. with 1 meg. pots to vary speed.
R 10, 1 k will give red LEDs about 10 mA, adjust as desired. R's marked * are 10 k.
Similar circuit, Olympic rapid fire training aid by MarkAB, next page.

 

Just for kicks , hooked up a string of 12 aquablue LED's in groups of 3, each group 4 LED's in series.
Used a 555 clock & 3 outputs of a 4022 ring counter to see the effect of a traveling blank. Looks good, but I think groups of 4 might be better. Might rewire to see.

 

Here is the schematic for a traveling blank LED string, might also be known as Marque Lights?
Travel speed is about 10 cm / sec. set by R2-4-6 & 1 uF Cs. Sub. with 1 meg. pots to vary speed.
R 10, 1 k will give red LEDs about 10 mA, adjust as desired. R's marked * are 10 k.
Similar circuit, Olympic rapid fire training aid by MarkAB, next page.View attachment 106275

Hi Bernard, i bread boarded stream#14 and when i connected it to power all the led's are on high. I pressed the switch and it seems to count if i toggle it back & fourth . am i supposed to put a clock pulse to the switch connection? obvious i am doing something wrong. I put a 1 meg pot in place of r2, 4, 6.

 

All LED's came on at power-up, that's good. A momentary press of SW should start a chain reaction, U1-3 should go high for about a second, trailing edge of pules should trigger U2, same for U3. Trailing edge of U3
pulse is supposed to trigger U1. How many of the first 3 LED's turn off in turn when SW is pressed ?

 

This is what i got

 

The video is so private that I can not view it.