So, that is why my 18f2550 transformed into an USB2Serial device stopped working... maybe is not burned...
On Thu, Oct 20, 2022 at 9:27 AM vsurducan <[email protected]> wrote: > Evan, I would say: do not boot your PC with Pickit2 connected to the USB. > Why? because there are chances to end with corrupted firmware. It happened > once. Fortunately having an old programmer and the firmware may solve this > possible issue. > Pickit2 seems better than pickit3. Pickit4 is better than any previous ( > maybe because it's Atmel based ? :P ) but its software stinks^3. > > On Wed, Oct 19, 2022 at 11:45 PM 'Evan Venn' via jallib < > [email protected]> wrote: > >> I know how the software works. >> >> The formal position is. Do not connect a pk3 or pk2 to the circuit and >> then star the Windows application with AutoDectect checked. >> >> Why? The software will control the PK3 or Pk2 with respect to 3v3 for a >> specific chip. But, if AutoDectect is checked and the previous chip is use >> is a non 3v3 chip then the Pk3 ot Pk2 will apply 5v0 during the detection >> process. >> >> So, best practice. Use manual selection of the chip and do not use Auto >> Detect when using a 3v3 circuit. >> >> Evan >> >> Get Outlook for Android <https://aka.ms/AAb9ysg> >> ------------------------------ >> *From:* 'Mike' via jallib <[email protected]> >> *Sent:* Wednesday, October 19, 2022 9:40:21 PM >> *To:* jallib <[email protected]> >> *Subject:* Re: [jallib] Re: PICKit3 programmer question. >> >> It should be noted that the PICKits also program "LF" devices. So, >> programming at 3.3V should not be a problem. Do brownout settings have to >> be changed? >> >> Regards, >> Mike >> >> >> On Wednesday, October 19, 2022 at 1:45:42 PM UTC-4 [email protected] >> wrote: >> >> Hello all, >> >> Thanks for your answers so it is save to run the PIC (and the rest) on >> 3.3 Volt and program the PIC in-circuit with my PICkit3. >> >> I will give it a try since it saves me a lot of level shift connections >> and wires on the breadboard. >> >> Thanks again. >> >> Kind regards, >> >> Rob >> >> ------------------------------ >> *Van:* [email protected] <[email protected]> namens >> vsurducan <[email protected]> >> *Verzonden:* woensdag 19 oktober 2022 06:07 >> *Aan:* [email protected] <[email protected]> >> *Onderwerp:* Re: [jallib] Re: PICKit3 programmer question. >> >> Pickit2/Pickit2+ (Evan's firmware/software) works ok as you described. I >> guess will be no issue on Pickit3 either. >> best wishes, >> >> On Wed 19 Oct 2022, 6:16 AM Matthew Schinkel <[email protected] >> wrote: >> >> I use PICKit3 ICSP with a 3.3v circuit. I haven't had any problems. >> >> Matt. >> >> On Tuesday, October 18, 2022 at 1:25:36 PM UTC-4 [email protected] >> wrote: >> >> Hi all, >> >> I have a question about a PICKit3 programmer. Instead of trying it out >> and blowing up my programmer I thought I ask you. >> >> I often have a device that operates at 3.3. Volt and the PIC running at 5 >> Volt. I use level shifters to get then connected. I program my PIC >> in-circuit so I do not remove it from the breadboard. >> >> I can run the PIC at 3.3. Volt so that I do no longer need any level >> shifters. >> >> My question is the following. Can I reprogram my PIC in-circuit when it >> is running at 3.3 Volt or will I kill the PIC? >> >> Are there any issues I should take into account, e.g. only use Low >> Voltage Programming or 'do not try this at all!'? >> >> Thanks. >> >> Kind regards, >> >> Rob >> >> -- >> You received this message because you are subscribed to the Google Groups >> "jallib" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/jallib/e81b2f33-7232-490e-becf-ae84d3585c0en%40googlegroups.com >> <https://groups.google.com/d/msgid/jallib/e81b2f33-7232-490e-becf-ae84d3585c0en%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> >> -- >> You received this message because you are subscribed to the Google Groups >> "jallib" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/jallib/CAM%2Bj4qsBjavKTpAmw2PohBBEQv_0MDKRftPeRFZnfio1ua0%2BKA%40mail.gmail.com >> <https://groups.google.com/d/msgid/jallib/CAM%2Bj4qsBjavKTpAmw2PohBBEQv_0MDKRftPeRFZnfio1ua0%2BKA%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> >> -- >> You received this message because you are subscribed to the Google Groups >> "jallib" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/jallib/84124dfe-ebc8-4696-8f7c-c3fe29a663e7n%40googlegroups.com >> <https://groups.google.com/d/msgid/jallib/84124dfe-ebc8-4696-8f7c-c3fe29a663e7n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> >> -- >> You received this message because you are subscribed to the Google Groups >> "jallib" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/jallib/CWXP265MB2518977920A7194512CF7D6DF92B9%40CWXP265MB2518.GBRP265.PROD.OUTLOOK.COM >> <https://groups.google.com/d/msgid/jallib/CWXP265MB2518977920A7194512CF7D6DF92B9%40CWXP265MB2518.GBRP265.PROD.OUTLOOK.COM?utm_medium=email&utm_source=footer> >> . >> > -- > You received this message because you are subscribed to the Google Groups > "jallib" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/jallib/CAM%2Bj4qvi6%2B-jJaez95Bsr2QQ5xYKGZ5SrRH1J7_vdNkB8r%2B%3DVQ%40mail.gmail.com > <https://groups.google.com/d/msgid/jallib/CAM%2Bj4qvi6%2B-jJaez95Bsr2QQ5xYKGZ5SrRH1J7_vdNkB8r%2B%3DVQ%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- Vasi -- You received this message because you are subscribed to the Google Groups "jallib" group. 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