dragon

I've recompiled the TC project as you suggested - with migration files, and received some minor error concerning USER_MIDI_NotifyRx and USER_MIDI_NotifyTx, but after deleting those lines from user_vectors.inc everything went ok and TC is working. Maybe I've lost some functions but haven't noticed anything yet. Problem with 64e was that first encoder is connected to 5th SR, and since I didn't have MPLAB till today, I couldn't change code to suit my hardware (only 1 DIN). But now I can try that also Thorsten, thanks for helping again dragon

When I upload the enc_example 1,2 or 3 encoder connected to SR 1 pins 0 and 1 is working fine (probably the rest are also working, but I haven't soldered them yet). But when I upload Tiny Controller app - nothing. Buttons are working, I can select vol, pan, EQs... but I can't change their values. Enc_speed is also working I'm using MIOS v1.7 and TC v1.3. Could this some kind of compatibility issue? My guess is that encoder, core and DIN are not the problem, since if something is wrong with them - enc_examples wouldn't work either. Any idea? Thanks dragon

It's not just right, it's GREAT, i'll wait for confirmation and make payment immediately after Thanks again Nat dragon

I'm willing to wait, just hope that there will be no more changes. So, still 10 encoders for me Thanks Nat dragon

Hi Nat, I would like 10 encoders if it's still possible Thanks for the effort Dragon

Yep, already have the goods, contrast problem solved and now thinking about design of front panel dragon

Hi, I don't know about email, haven't contacted them, just ordered the LCDs, payed with the credit card directly on their site and everything went smooth. And the postage was free (from TX to MA) which is strange, considering the package was pretty big (LCDs were part of the Motorola satelitte receiver, you get them with front mask - some plastic with 5 buttons, few 74HC595, 74HC165 and couple of other chips) dragon

Hey, As for 100nF and 330nF you can take Metalised Polyester Film capacitors and for 33pF Metallised Ceramic Plate will do the job You are right, wattage rating is the max value resistor can handle, so everything above the 0.25W is ok dragon

Hi kejace, Yeah I recommend them, only thing is that you have to connect negative voltage (instead of GND) to pin 3 on LCD. The solution I'm going after (MAX1044 + 3 electrolytic caps) costs around $2 and it will supply enough current for two LCDs (possibly for all four) so they are still a bargain despite added expenses. Regards dragon

Hi Thorsten, Negative voltage on pin 3 is the solution.  I've tried with the 1.5V  battery, with '+' connected to GND and '-' to V0 on LCD and contrast is just perfect now, everything is readable. I'm not using AC so I searched for DC-DC solution and I'm gonna try Maxim MAX1044 voltage inverter. It has option to invert +5V to -5V with using only 3 other components (electolytic caps). It's the most simple DC solution I stumbled across with enough mA, also the PCB will be miniature  Thanks for help and thanks for this great project dragon

I've looked through the datasheet and found nothing about controling contrast. Only thing is that they suggest 0.3V on V0 which then gives absolutely unreadable characters. Frying PIC is also my concern so I'm giving a go to 7905 to try with -5V. Hope that works but if it doesn't then external supply it will be

I got four of these for $18.68 but currently I'm having trouble getting them to work. Look here: http://www.midibox.org/cgi-bin/yabb/YaBB.cgi?board=troubleshooting;action=display;num=1058198570 So maybe you should wait till I find some solution :-/ dragon

Hi Pilo, 7805 doesn't get any hotter then with 2*16 display. It seems that I wasn't precise enough. When I said pale I meant dots - I can see 'Received a DIN Event' but dots which are supposed to be black are too pale, almost impossible to see. Backlight, on the other hand, works fine And I've plugged regulated 6.5V after the 7805 (which in this case does not regulate anything), meaning that the PIC18F, 6N138, LCD, 4051, 74HC165 and everthying else is working on 6.5V. And if I keep contrast pot to the minimum, V0 is 0V so the difference Vd - V0 is 6.5V Hope someone could help me clear this mess Thanks dragon

Hi, Things got little bit stranger. I've connected 6.5V directly to J2 on the core, bypassing voltage regulator and to my surprise the LCD is working perfectly, everthying on it can be seen clearly, also every pot and every button is working I'm wondering, maybe this LCD needs negative voltage at V0 as I read some LCDs do need -7.5V. In that case difference between Vd and V0 would be 5V - (-7.5)=12.5V which is closer to 6.5V then 5-0=5V (which is now the best case, goes to 5V-5V = 0 when I turn contrast pot all the way up). Does this sound logical enough to try to make -7.5V power supply? Or the LCD has another kind of problem? Thanks dragon

Hi again, Thank you Thorsten for fast response. After some extensive soldering/desoldering (wasn't able to get pfosten thing) I've found out couple of things 2*40 is working but the working dots are so pale that it's almost imposible to see them ie. I can see what is written on LCD but I have to stare at angle almost parallel to LCD surface. I get the same results regardles of contrast/luminance settings. Also it's same with PIC16F and PIC18F (I do get a black line at the top during initialization), I even tried LCD with old MIDIbox Plus - same results I've sent the sysex and got the proper response F0 00 00 7E 40 00 0F 00 02 F7 Thanks dragon