TK.

Hi Icam, the link you mentioned is no free source for datasheets :-/ Ian, if you read this: you don't know a manufacturer of LCDs in China, no? ;-) Best Regards, Thorsten.

-14.36V? Thats great! It means, that you don't need a second PSU, the DC converter is already integrated. Does the display also work if nothing is connected to the Vlc pin? Best Regards, Thorsten.

Hi Dan, in theory it already works by enhancing the hooks which already have been integrated into the application code (for example lc_menu.inc, function CS_MENU_SendParameter and CS_MENU_GetSIDBase), and by enabling the MIOS_MIDI_MERGER_MBLINK_FP mode, but in practice I should better test this before distributing the changes. ;-) Selection of SID: either from the main menu, or via a dedicated button + 4 LEDs. However, MIOS V1.2 is not far from completion, thereafter my head is free again for applications (maybe this weekend) Best Regards, Thorsten.

Hi Dan, in theory it already works by enhancing the hooks which already have been integrated into the application code (for example lc_menu.inc, function CS_MENU_SendParameter and CS_MENU_GetSIDBase), and by enabling the MIOS_MIDI_MERGER_MBLINK_FP mode, but in practice I should better test this before distributing the changes. ;-) Selection of SID: either from the main menu, or via a dedicated button + 4 LEDs. However, MIOS V1.2 is not far from completion, thereafter my head is free again for applications (maybe this weekend) Best Regards, Thorsten.

Than lower the pull-up resistor for the button, than better the result. I would recomment 1k Best Regards, Thorsten.

Than lower the pull-up resistor for the button, than better the result. I would recomment 1k Best Regards, Thorsten.

Unfortunately I wasn't able to find a datasheet for the LC7981 - does anybody know where to download it for free? Also alternative sources for 240x64 displays (KS0108 or HD61202) would be interesting, because these are the fastest controllers for customized fonts and icons! Best Regards, Thorsten.

Unfortunately I wasn't able to find a datasheet for the LC7981 - does anybody know where to download it for free? Also alternative sources for 240x64 displays (KS0108 or HD61202) would be interesting, because these are the fastest controllers for customized fonts and icons! Best Regards, Thorsten.

Hi, yes! From the PIC18F452 datasheet Best Regards, Thorsten.

Hi, yes! From the PIC18F452 datasheet Best Regards, Thorsten.

Hi Darren, if others are interested, we could add the text to the "HowTo create a PCB" page. :) Best Regards, Thorsten.

Hi Darren, if others are interested, we could add the text to the "HowTo create a PCB" page. :) Best Regards, Thorsten.

Hi Dan, very good progress! :) Yes, the smoke identifies a short circuit. Maybe (if you have luck!) the not well documented Vlc pin has to be used on a different way. Could you please disconnect the pot and check the voltage level between Vlc and ground? If you've luck, the DC converter is already integrated and you only have to connect a pot between Vlc and ground. Another interesting point would be if the chip select lines are really inverted. Check this by using LCD type 1 with MIOS_PARAMETER = 0x00 (and not 0x01) Best Regards, Thorsten.

Hi Pilo, the problem with this programmer is, that it uses the low-voltage programming mode and therefore allocates pin RB5, which - once the mode has been enabled - cannot be used for any other purpose anymore. Consequentialy you cannot drive a LCD module, which requires RB5 as data pin. Best Regards, Thorsten.

Hi Pilo, the problem with this programmer is, that it uses the low-voltage programming mode and therefore allocates pin RB5, which - once the mode has been enabled - cannot be used for any other purpose anymore. Consequentialy you cannot drive a LCD module, which requires RB5 as data pin. Best Regards, Thorsten.

Hi DriftZ, I'm pleased to hear that you've joy with the sequencer. :) LEDs: it seems that you've connected the LEDs in the wrong direction, therefore the status will be displayed inverted. The shorter pins of the LEDs are the cathodes - they have to be connected to ground. The longer pin (the anode) has to be connected to the appr. DOUT pin No, mute steps cannot be saved, because normaly it's usefull to mute tracks or steps for all patterns (-> global option) Saving: the current pattern (all parameters) will be saved automatically when a new pattern is selected or when the sequencer jumps to a new pattern by itself. Additionally the track configuration settings are saved when you leave a menu page. Yes - if you want to ensure that the whole pattern is stored in EEPROM before switching off the box, the best way is to go into the copy submenu and to save the pattern over itself For the SysEx menu it is planned to send the current pattern to another MB64seq or to MIDI-Ox, or later to an editor. Unfortunately only the SysEx transmit routine is working yet, the receiver has been disabled as I first want to realize it with the MIOS solution. The code will be transfered to the PIC16F project later. Have fun! Best Regards, Thorsten.

Hi DriftZ, I'm pleased to hear that you've joy with the sequencer. :) LEDs: it seems that you've connected the LEDs in the wrong direction, therefore the status will be displayed inverted. The shorter pins of the LEDs are the cathodes - they have to be connected to ground. The longer pin (the anode) has to be connected to the appr. DOUT pin No, mute steps cannot be saved, because normaly it's usefull to mute tracks or steps for all patterns (-> global option) Saving: the current pattern (all parameters) will be saved automatically when a new pattern is selected or when the sequencer jumps to a new pattern by itself. Additionally the track configuration settings are saved when you leave a menu page. Yes - if you want to ensure that the whole pattern is stored in EEPROM before switching off the box, the best way is to go into the copy submenu and to save the pattern over itself For the SysEx menu it is planned to send the current pattern to another MB64seq or to MIDI-Ox, or later to an editor. Unfortunately only the SysEx transmit routine is working yet, the receiver has been disabled as I first want to realize it with the MIOS solution. The code will be transfered to the PIC16F project later. Have fun! Best Regards, Thorsten.

and with MIOS it would also be possible to drive a nice graphical LCD, to add meters for the HiFi channels, maybe also a spectrometer... and a remote control of course :) Here some impressions of a preamp project I realized ca. 10 years ago with a 80c535 Best Regards, Thorsten.

Yes... ;-) Like every common USB device the USB module will be a client, not a host. This means that it isn't possible to get a link to other USB clients. Best Regards, Thorsten.

Hi Dan, sure, the LCD logic itself works with +5V, only the liquid crystal cells require a negative supply (-> Vlc pin). You could use an additional PSU which delivers stable 9V - connect the positive end to the ground of your core module and the negative end via a pot to the Vlc input, the contrast has to be adjusted with the pot. If you don't have a PSU available, just use batteries. The LC cells don't require more than 3 mA (will work for a lot of hours ;-)) Best Regards, Thorsten.

sure, thats ok. For me it's only important that Mike and SmashTV own the exclusive right for selling MBHP PCBs which are copyrighted by me, so that the upcoming developments are not in danger. I've nothing against people who are starting collective orders, so long as they don't sell the kits for profit on the free market (means also EBay) Best Regards, Thorsten.

sure, thats ok. For me it's only important that Mike and SmashTV own the exclusive right for selling MBHP PCBs which are copyrighted by me, so that the upcoming developments are not in danger. I've nothing against people who are starting collective orders, so long as they don't sell the kits for profit on the free market (means also EBay) Best Regards, Thorsten.

Hi Dan, for the case that you want to try it with an external voltage source w/o the DC converter: http://www.ucapps.de/tmp/mios_v1_2_pre3.hex.zip now supports an option for the KS0108 driver which inverts the chip select pins your T6963C based GLCD more than 2 CLCDs (in fact the number of CLCDs which can be driven by one core is now only limited by the number of free pins) for your LCD you need to change lc_init.inc: USER_Init LC_Init ;; use a KS0108 compatible graphical LCD with inverted chip selects movlw 0x01 movwf MIOS_PARAMETER1 movlw 0x01 call MIOS_LCD_TypeSet it would be great if you could check this with your HD61202 GLCD Best Regards, Thorsten.

Hi Dan, yes, the new datasheet makes much more sense - among other pins Vdd and Vss are exchanged, this means that you will get a short when you connect the LCD in the wrong order. Thats exactly what you've noticed. It's also interesting that the pin name for the reset line indicates a low-active input /RST, means: you have to use a pull-up to +5V. Now I see only two problems: Vee is missing, this means that you have to supply V0 (here: Vlc) with ca. -8V to -10V from external. (Note: in some days I will publish a MAX759 based DC converter which supplies up to -15V from a 5V source). Another problem are the chip select lines /CS1 and /CS2. They are inverted. However, I can compile a special MIOS version for testing purposes if another polarity is required. But in the meantime just check if the core voltage is ok with the new pinning. Best Regards, Thorsten.

This week we can enjoy some great masterpieces from Tux (France) RAF (another fellow from France :-) ) and last but not least from LO (New Zealand):