kabl
@kabl
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Joined: 2022-11-27 1:17 pm
Last seen: 2023-05-09 8:44 am
Topics: 2 / Replies: 28
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RE: Set the 555 timer to 40 seconds idle, 2 seconds trigger - possible?

@davee Thank you for all your feedback! I will play around with decoupling capacitors when I get the time, to see what exciting and erratic effe...

1 year ago
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RE: Set the 555 timer to 40 seconds idle, 2 seconds trigger - possible?

Here is my circuit diagram, with the MOSFET and LED. Took some time, work keeps interfering with my hobbies...

1 year ago
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RE: Powermeter using Adafruit ESP32-S2 TFT Feather and Adafruit INA219 Current Sensor Breakout - Working code, help to clean it up?

@zander Hi Ron, and thank you for shooting straight - as always. I have been looking at several different sketches/scripts, and trying to...

1 year ago
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RE: Set the 555 timer to 40 seconds idle, 2 seconds trigger - possible?

@davee; Thank you for all the tips. I will go about this the "old school" way. I used Fritzing to draw lines on the PCB actually, I never built th...

1 year ago
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RE: Set the 555 timer to 40 seconds idle, 2 seconds trigger - possible?

Hi all! @zander, @davee After a small break I had the time to sit down with this problem/challenge again. Some time away did the trick. Fast rec...

1 year ago
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RE: Set the 555 timer to 40 seconds idle, 2 seconds trigger - possible?

@davee This setup works, the LEDs light up for 2 seconds, then idle for 38 seconds. 2 5 volt LEDs in series, fed 9 volts. I will take simil...

1 year ago
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RE: Set the 555 timer to 40 seconds idle, 2 seconds trigger - possible?

@davee The gate pin of the mosfet is connected to the out pin of the 555 using a 2.2kO resistor, as Bill showed in his video using the Arduino. The...

1 year ago
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RE: Set the 555 timer to 40 seconds idle, 2 seconds trigger - possible?

@davee Swift and precise as always, thank you for all the information. Bills excellent video has been seen a couple of times, prior to trying this. ...

2 years ago
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RE: Set the 555 timer to 40 seconds idle, 2 seconds trigger - possible?

Video of working setup, approx. 2 seconds light, approx. 38 seconds pause.

2 years ago
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RE: Set the 555 timer to 40 seconds idle, 2 seconds trigger - possible?

@davee @zander So I followed your tip on the mosfet, and I used a IRF520NPbF. To test it I used a 2.2k resistor from the OUT pin of the 555 and co...

2 years ago
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RE: Set the 555 timer to 40 seconds idle, 2 seconds trigger - possible?

@zander ; thank you! Looking into that, it seems they have different forward diode voltage. As I understand it, this means how much the voltage will...

2 years ago
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RE: Set the 555 timer to 40 seconds idle, 2 seconds trigger - possible?

Continuing this project, what would be the best way to handle a higher current? The radio I intend to use draws about 900 milliamperes, a lot more tha...

2 years ago
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RE: Set the 555 timer to 40 seconds idle, 2 seconds trigger - possible?

@davee; you were spot on about the diodes. I removed the ones I had in the previous setup and put in 1N4148 instead. Now it works like a charm :) See ...

2 years ago
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RE: Set the 555 timer to 40 seconds idle, 2 seconds trigger - possible?

@davee Thank you so much for your reply. I have some of these 1N4148, I will try these after work today. I have to go thru my mail when I get back fro...

2 years ago
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