All Questions
10
questions
0
votes
1
answer
291
views
Watchdog timer circuit without continual re-trigger
The STWD100 is a watchdog timer, if a pulse from a microprocessor isn't received in X amount of time, it pulls it's output low. This is useful to detect if a processor has experienced an upset (...
- 82.4k
2
votes
4
answers
942
views
Resettable timer with opamp
I need to make a circuit with an opamp and passive components that has those constraints :
When it receives a pulse on one input, its output should be high.
After a predefined duration T, it should ...
- 351
1
vote
0
answers
59
views
IoT wireless solenoid circuit
I am a Newbie and I do not have a lot of expirience. The circuit has been put together from pieces I have found on the internet. My goal is to develop a reliable wireless solenoid circuit to water my ...
- 11
1
vote
1
answer
502
views
What's the name of a timeout relay which won't re-trigger if it times out?
I would like to replace the relay which triggers a water pump, with a relay which times out after, say, 10 minutes. And if it times out, it stays locked out until reset.
Needs to be 230v AC on both ...
- 113
1
vote
2
answers
662
views
Is it possible to implement a fail-proof watchdog timer in software?
I want to add a piece of code for watchdog timer within my source code so that the board resets automatically when programs hangs. I am using Mediatek Linkit One board.
- 137
0
votes
2
answers
4k
views
AVR Watchdog interrupt mode and reset mode
I am going through datasheet of AVR2560V. In page 65 , table 12-1, it says that AVR2560 has 3 mode for watchdog
Interrupt mode - WDE = 0, WDIE = 1
...
- 67
3
votes
1
answer
3k
views
Understanding PIC32 watchdog timer operation
I'm new to uC development and have been fooling around with the PIC series for about 6 months now. I recently started working with the PIC32 and Microchip's XC32 C++ compiler. I don't know if I have a ...
- 280
1
vote
2
answers
2k
views
How to use watchdog timer in ATmega128
I am working with an ATmega128 and need to reset the microcontroller after some 10 seconds has passed and the user has not interacted with microcontroller. As an example when the user has not pressed ...
- 51
0
votes
2
answers
397
views
PIC: Watchdog timer off by a factor of 4
I have a PIC16 (datasheet here) for which I use the watchdog timer. I configure the watchdog timer as follows:
WDTCONbits.WDTPS = 0b01110;
According to page 105 ...
- 11k
8
votes
3
answers
2k
views
Which of these approaches for a watchdog timer?
I recently learned about watchdog timers, and am trying to implement one for my circuit for the purpose of resetting my (AVR) microcontroller if it hangs (i.e., doesn't respond to the watchdog).
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- 4,922