Hi Hans, Most PICs can operate at 3 Volt, below a screenshot from the datasheet. I only use F versions. [cid:1a116b9d-290e-40e0-b3a5-7619a7231249]
Just check the datasheet for the PICs that you have. I have done several projects using a PIC that is supplied by batteries so operating at 3 Volt or lower. What I do not know for sure if when you program the PIC if it should be at 5 Volt, maybe only if you use Low Voltage Programming, so I normally program the PIC when it is connected to a 5 Volt power supply but in the application it can run even on a supply voltage as low as 2 Volt. If you have peripherals that work at 5 Volt you could always use a step-up converter to step-up the power supply from 3 Volt to 5 Volt. Kind regards, Rob ________________________________ Van: [email protected] <[email protected]> namens vsurducan <[email protected]> Verzonden: woensdag 29 juni 2022 09:11 Aan: [email protected] <[email protected]> Onderwerp: Re: [jallib] sun power use You may continue to use it at 5V if the energy extracted from the PV is drawn via a MPPT ( maximum power point tracking) IC and your solar panel assures the current needed for your electronics. Many panels have 6V open at 0.3A or 0.5A short circuit current Actually any actual PICmicro will run on 3.3V ( including those rated for 5V) if the internal oscillator is set to maximum frequency intended only for 3.3V. Most of the low power PICs ( LF series) will run down to 2.2V ( some down to 1.8V) so you may connect the solar panel directly on your LDO without MPPT or PWM. best wishes On Wed, Jun 29, 2022 at 9:57 AM hans <[email protected]<mailto:[email protected]>> wrote: Hello all, I don't want to reinvent the wheel. Until now I have always used 5 volts supply voltage, but because of a solar panel I would like to work on 3 volts. Which processors should I use and what should I pay attention to? Thank you in advance, greetings Hans -- 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]<mailto:[email protected]>. To view this discussion on the web visit https://groups.google.com/d/msgid/jallib/3220a563-f63f-435b-b0a6-c088cc777aaen%40googlegroups.com<https://groups.google.com/d/msgid/jallib/3220a563-f63f-435b-b0a6-c088cc777aaen%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]<mailto:[email protected]>. To view this discussion on the web visit https://groups.google.com/d/msgid/jallib/CAM%2Bj4quz-mvFLM7nuWmPg0YBcQCGNLDqw09bJMr%3DbKpmALa9TQ%40mail.gmail.com<https://groups.google.com/d/msgid/jallib/CAM%2Bj4quz-mvFLM7nuWmPg0YBcQCGNLDqw09bJMr%3DbKpmALa9TQ%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/GVXP195MB163746EEDA0D688D5356E6AEE6BB9%40GVXP195MB1637.EURP195.PROD.OUTLOOK.COM.
