1 Attachment(s)
SOLVED: System RESET works, sort of
Solved: see post #5:
https://www.picbasic.co.uk/forum/sho...426#post156426
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This works fine if I press it for nearly 1 second.
Attachment 9796
But the LCDs display garbage if I press it quickly.
I was hoping to get away from using a 555 timer and an inverter to trigger the mosfet.
(yes, I had both ICs wired, and then I took it apart thinking I had found a shortcut, which isn't working as well as expected)
EDIT: This guy just gave me an idea to try:
https://electronics.stackexchange.com/a/322184
Re: System RESET works, sort of
Maybe you just need a cap in parallel of the button and a diode in parallel with the resistor, cathode to +Vdd. 10uF would be a good start.
Ioannis
Re: System RESET works, sort of
Quote:
Originally Posted by
Ioannis
Maybe you just need a cap in parallel of the button and a diode in parallel with the resistor, cathode to +Vdd. 10uF would be a good start.
Ioannis
Nope, no difference.
Re: System RESET works, sort of
I tried this guy's idea of a RC delay on the mosfet.
https://electronics.stackexchange.co.../322184#322184
I tried with 10uF and all the way up to 1M (both to VDD like that link), no difference. I didn't even get a delay.
Re: System RESET works, sort of
GOT IT! Reinstalled the 555 timer with 7404 inverter.
I had to up the capacitor to 100uF. Works beautifully with 10K.
Just over a second (by eye), so now I can blip the button and reset is complete.
Re: System RESET works, sort of
Re: SOLVED: System RESET works, sort of
Quote:
Originally Posted by
Demon
Nope, no difference.
Quote:
Originally Posted by
Demon
How can that be true? I really cannot understand... A simple cap with a resistor will give the required RC delay. And if you want to quickly reset again, the diode, reverse biased in parallel with the resistor will rapid discharge the cap, even if it is big enough.
Don't get it why it failed...
Ioannis
