Tagged Questions

5
votes
3answers
139 views

five month countdown timer circuit?

I'm a beginner in electronics, so I just have an idea in my head and don't know how to actually make it. I want to make a countdown circuit, for an event in next 5 month. The display format is like ...
4
votes
3answers
70 views

Creating a Sequenced Array of 3 Mosfets with Adjustable Timings

I am comfortable with rudimentary 555 circuits and other basics, but I have something a little bit beyond me now. I need to have three separate mosfets A, B, and C all turn on and off in sequence. I ...
2
votes
3answers
124 views

how to create a square wave with large duration and high duty cycle

For a "plant waterer circuit" I would like to add a safety feature that prevents watering for over ~3 minutes, and delays the next watering from occurring for ~12 hours. Currently the circuit is ...
3
votes
1answer
139 views

How do I determine the fastest time between pulses I can measure?

I need to calculate the elapsed time between the rising edge of one pulse to the rising edge of the next pulse. This needs to be in a mobile environment, but I am not attached to any solution as long ...