Hi everyone,
I'm in need of some guidance.
I've been looking for approx 2 weeks now online for many many hours, and have been experimenting with breadboard since 3 days to achieve a simple thing. I have read and seen many circuits on many different website. Have read for hours through 555 datasheets to understand it's working. Haven't lost interest.
I have a signal wire, it gives 0,5 seconds of 12V upon pressing a button.
But I need to delay this brief signal for 4~ seconds.
I have added GO.png, it was my first attempt to make this. I have created both circuits, but in both diagrams they depend on the TRIGGER signal to go low, which does not apply to me.
Meanwhile I found DF90.png, it looks very much as to what I need, perfect! On this website.
I know how to calculate time in seconds (t=1.1xRxC), but in DF90.png I can not figure out which ones to calculate for me to adjust the timing. The output pulse in DF90 is too short.
So my question, anyone knows which R to multiply with C, to adjust delay time? AND which R x C, to adjust pulse time output? I use 390K and 1uf for 0,42s pulse, and 820K and 4,7uf for a 3,6s delay.
Or maybe you can help me reverse polarity on my GO.PNG circuits so I can use these circuits for my purpose? I do not want the trigger signal to have to become low. The trigger must be the 0.5 seconds of 12v current.
I've been kind of stuck on this for long now. And am desperate for a solution. Also am looking to buy someone off to make this for me, or to pay someone making me a circuit with either one 555, dual 555s, or a pre programmed microcontroller that fits my needs.
Help is very much appreciated. Naamloos.png is included as how I want the timing diagram to work.
Cheers, from Amsterdam, Netherlands.
Jelle
I'm in need of some guidance.
I've been looking for approx 2 weeks now online for many many hours, and have been experimenting with breadboard since 3 days to achieve a simple thing. I have read and seen many circuits on many different website. Have read for hours through 555 datasheets to understand it's working. Haven't lost interest.
I have a signal wire, it gives 0,5 seconds of 12V upon pressing a button.
But I need to delay this brief signal for 4~ seconds.
I have added GO.png, it was my first attempt to make this. I have created both circuits, but in both diagrams they depend on the TRIGGER signal to go low, which does not apply to me.
Meanwhile I found DF90.png, it looks very much as to what I need, perfect! On this website.
I know how to calculate time in seconds (t=1.1xRxC), but in DF90.png I can not figure out which ones to calculate for me to adjust the timing. The output pulse in DF90 is too short.
So my question, anyone knows which R to multiply with C, to adjust delay time? AND which R x C, to adjust pulse time output? I use 390K and 1uf for 0,42s pulse, and 820K and 4,7uf for a 3,6s delay.
Or maybe you can help me reverse polarity on my GO.PNG circuits so I can use these circuits for my purpose? I do not want the trigger signal to have to become low. The trigger must be the 0.5 seconds of 12v current.
I've been kind of stuck on this for long now. And am desperate for a solution. Also am looking to buy someone off to make this for me, or to pay someone making me a circuit with either one 555, dual 555s, or a pre programmed microcontroller that fits my needs.
Help is very much appreciated. Naamloos.png is included as how I want the timing diagram to work.
Cheers, from Amsterdam, Netherlands.
Jelle
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