Hi Pinhead, I have followed your advice on a 16F877a (from the sample 's) and indeed it works perfect. I Great, Thanks hans
Op dinsdag 4 februari 2025 om 22:32:20 UTC+1 schreef Pinhead: > Hi Hans, > > The only "piggyback" that I know of for alphanumeric LCD's contain an > I2C-to-8bit converter, most of the time, an PCF8574 > > If this is not the part that is on yours, please mention it. > > For the rest, the trick is "only" to send on I²C the commands that are > documented in the HD44780 datasheet. > > Therefore, I think you should give a try to the lcd_hd44780_PCF8574.jal > library. > > If the chip on your adapter is another chip, check also what is the I2C > adress to be used (the library used adress 0x27, hardcoded) > > Hope this helps > > David > Le 04-02-25 à 19:23, Hans van Veldhuizen a écrit : > > Hello Rob, > It is not about the HD44780 on the well-known 6-pin connection. It is > about an interface that you can stick on such an LCD and then control the > thing with I2C, (so only two connections instead of 6). The PCF8574 is a > different thing. The link that Pinhead indicated (to AZ is about such an > interface.) > > > https://www.az-delivery.de/products/lcd-display-16x2-blau-und-i2c-set-kostenfreies-e-book > greetings > Hans > > Op dinsdag 4 februari 2025 om 19:01:11 UTC+1 schreef Rob CJ: > >> Hi Hans, >> >> I do not know what you mean. I see in Jallib several libraries for the >> HD44780, some for use with the display directly and one using a PCF8574. If >> the type number is the same, the library should work (I assume). >> >> If you have enough pins available on your PIC, you could use the one that >> interfaces directly with the display by a 4-bit bus or 8-bit bus. >> >> Kind regards, >> >> Rob >> >> ------------------------------ >> *Van:* [email protected] <[email protected]> namens Hans van >> Veldhuizen <[email protected]> >> *Verzonden:* maandag 3 februari 2025 21:49 >> >> *Aan:* jallib <[email protected]> >> *Onderwerp:* Re: [jallib] I2C LCD lib >> Hllo Rob, >> Do you mean ; lcd_hd44780_pcf8574. jal . The pcf8574 look different.. >> regards >> Hans >> >> Op maandag 3 februari 2025 om 19:48:28 UTC+1 schreef Rob CJ: >> >> Hi Hans, >> >> There is a JAL library for the HD44780. Not sure if you are looking for >> that. >> >> Kind regards, >> >> Rob >> >> ------------------------------ >> *Van:* [email protected] <[email protected]> namens Hans van >> Veldhuizen <[email protected]> >> *Verzonden:* maandag 3 februari 2025 19:27 >> *Aan:* jallib <[email protected]> >> *Onderwerp:* Re: [jallib] I2C LCD lib >> >> Hi Pinhead, it is not from AZ but it looks identical. Great again >> somthing to try. >> Thanks >> Hans >> >> Op maandag 3 februari 2025 om 19:02:14 UTC+1 schreef [email protected]: >> >> >> https://www.az-delivery.de/products/lcd-display-16x2-blau-und-i2c-set-kostenfreies-e-book >> >> Télécharger BlueMail pour Android <https://bluemail.me> >> Le 3 févr. 2025, à 18:53, Rob CJ <[email protected]> a écrit: >> >> Hi Hans, >> >> I am missing information here. Which I2C adapters do you mean? >> >> Kind regards, >> >> Rob >> >> ------------------------------ >> *Van:* [email protected] <[email protected]> namens Hans van >> Veldhuizen <[email protected]> >> *Verzonden:* maandag 3 februari 2025 17:35 >> *Aan:* jallib <[email protected]> >> *Onderwerp:* [jallib] I2C LCD lib >> >> >> clear >> 166 / 5.000 >> Vertaalresultaten >> Vertaalresultaat >> Hi all, >> A while ago I bought a few 16x2 LCDs and they came with I2C adapters that >> I haven't used yet. Is there already a sample program for this kind of >> thing? >> 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]. >> To view this discussion visit >> https://groups.google.com/d/msgid/jallib/cb423f9d-9d10-41fb-8779-e48044d2e97cn%40googlegroups.com >> >> <https://groups.google.com/d/msgid/jallib/cb423f9d-9d10-41fb-8779-e48044d2e97cn%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 visit >> https://groups.google.com/d/msgid/jallib/AM7PR02MB6098163A098940F2244C455FE6F52%40AM7PR02MB6098.eurprd02.prod.outlook.com >> >> <https://groups.google.com/d/msgid/jallib/AM7PR02MB6098163A098940F2244C455FE6F52%40AM7PR02MB6098.eurprd02.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 visit >> https://groups.google.com/d/msgid/jallib/64e82e99-f7f9-4e7b-a9a2-98d3ec8e5cf1n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/jallib/64e82e99-f7f9-4e7b-a9a2-98d3ec8e5cf1n%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 visit >> https://groups.google.com/d/msgid/jallib/746f4264-f7c7-41f6-a193-be8fe5f063can%40googlegroups.com >> >> <https://groups.google.com/d/msgid/jallib/746f4264-f7c7-41f6-a193-be8fe5f063can%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 visit > https://groups.google.com/d/msgid/jallib/345490f1-fb44-41b6-af23-e0f2425e0220n%40googlegroups.com > > <https://groups.google.com/d/msgid/jallib/345490f1-fb44-41b6-af23-e0f2425e0220n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- You received this message because you are subscribed to the Google Groups "jallib" group. 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