Hi again,wow that looks much simpler. I will read over this do some studying. I will probably have a couple questions this evening. thanks for the input!
That's what designing circuits is all about, experiment try new ideas and keep learning along the way.I know I took the long way to get there but I learned about other things as well along the way. which gave me more ideas as well as questions. this is great fun. I sincerely appreciate the time you devoted and your instructions. I learned exactly how to accomplish the task. there may be a more efficient to do it which I will find out as I learn more. .
Hi
I know nothing about 555's or any Ic's for that matter, my question is, is the switch S1 used to introduce some sort of RC timing into the input of the 555 to make it pulsate?
Thanks.
Hi
I know nothing about 555's or any Ic's for that matter, my question is, is the switch S1 used to introduce some sort of RC timing into the input of the 555 to make it pulsate?
Thanks.[/QUOT
yes, pins 2 and 7 have equal current. When you push s1 the cap begins to steal current ( and charge ) so now the trigger side is lower ( not equal to the divider) so it powers pin 3. At the same time the cap begins charging. When s1 is pushed again the cap boosts the current and it goes higher than the threshold and it turns off pin 3. I just use it as a switch. Or a manual timer. MrAI circuit requires 2 pins from the arduino. This one only 1
Can you do a ladder schematic and add the + and - of the load? I almost have this……thanks
Are you still looking for a way to replace S1 with a transistor, if so, then I need some circuit info.On my post 57 I posted a circuit idea. Change S1 to a transistor with a resistor on the base. A signal from the arduino will turn it on, another signal will turn it off. ...