hns

thanks again.. the problem is solved now As i said in my first post: im probably a moron. Now i know for shure. In my package the 3.3V regualtor was missing, so i soldered the IC6 in place of IC7 by mistake. Stupid me.. Im happy i did not fry anything. After changing the regulator (i had the right one in the second package. thats why i allways buy two sets) the lcd tutorial runs as expected. Jup, was fun to build the cable as i had to cross pairs of wires for every two pins. stupid layout. Good point. Thanks.. i found out about the missing IC6 while soldering the external power stuff twogether. Regards Hns P.S: i quite shure, my next question will be posted soon.

Hi Phil, thanks for your reply. jup, when i compile the 020-lcd tutorial it uses the clcd driver. i even packed a #error directive into clcd/app_lcd.c just to see if it uses the right code. i've connected the lcd to J15A. And i used exactly the schematics you pointed out to wire everything together. i had some troubles to map the lines from the connector to the lcd because the pin layout on the lcd ist 15 16 1 2 .. and so on.. so its worth to check the wires a forth or even fifth time.. I'll try this tomorrow. What still toubles me is that the contrast poti is not working on both rows the same way. as i told, the first row is dimmed lesser than the second. is this normal when the display is not initialized? Regards and thanks again, more when i checked the wires the fifth time. hns

Hi there. First of all: Yes i used the Search-Function on the Forum, yes it is my first Midibox project, and yes im probably a moron. So please dont flame me off the internets within seconds.. (Oh: and hello earthlings and thanks for all the midi) So here is my problem: i have a STM32 core connected to a Analog Vision 2x16 Character Display (AV1624YFBY-SJ, KS0066 driver). When i power up the board, i only get two rows of "all-on-pixels". The first row is a little darker than the second, and i can control the contrast with the trimmer. When i have Vo of 0V the display seems more or less normal showing all character-pixel-grids-whatever fully lit. (those 2x16 things where the characters should show up) I have connected the Backlight to B+ and B-, and it is glowing nicely in green. (more about the backlight later) Contrast and Brightness seems working fine. (except that the contrast turns down the second row first and then the first row) I have triple checked the wires. looks good. All the Tutorial-Apps i upload work as expected (as long they dont use the lcd) Sadly the ../tutorials/020-lcd thing does nothing. I've checked the timing and initialisation stuff in app_lcd.c. looks good as far i can tell. So: Im stuck. If anyone could help me a little i would be very happy. And thanks for that very nice piece of hardware.. Hns P.S: i was unable to get a connection to the board from my mac, when B+/B- was connected to the LCD. So i desolderd them to lower the current from the usb plug. No backlight at the moment. P.P.S: sorry for my translate.google style english. what a surprise, i am not native english speaking. mea cupla.. lcd.pdf