Re: [PIC} Spontaneous resets
Allen Mulvey <[email protected]>
| Newsgroups | gmane.comp.hardware.microcontrollers.pic |
|---|---|
| Message-ID | <[email protected]> |
I had a similar problem with an ESP device rebooting whenever a Doppler radar unit was triggered. Isolating and filtering the DC supply resolved the issue. I would also consider keeping the reset pin but put a capacitor on it and possibly a weak pullup. Allen Mulvey On 4/27/2025 8:47 AM, David C Brown wrote: > I have the |MCLR pin of the PIC configured as an input so that there is no > external reset. > The connection between the unit and the display in the house is over copper > using CAN bus transceivers. > __________________________________________ > David C Brown > 43 Bings Road > Whaley Bridge > High Peak Phone: 01663 733236 > Derbyshire eMail:[email protected] > SK23 7ND web:www.bings-knowle.co.uk/dcb > <http://www.jb.man.ac.uk/~dcb> > > > > *Sent from my etch-a-sketch* > > > On Sun, 27 Apr 2025 at 12:26, Jason White<[email protected]> > wrote: > >> I'd guess the unit is interfering with itself when it transmits a response. >> If that is the case, typical EMI guidelines apply. >> >> I'd suppose that your prototype might lack a ground plane, and the reset >> line (or something similar) is probably vulnerable to coupling into the >> signal produced by your radio transmitter. Moving objects in the near field >> affect the amount of coupling (capacitive, etc.). >> >> -- >> Jason White >> -- >> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive >> View/change your membership options at >> https://mailman.mit.edu/mailman/listinfo/piclist >>