Hi ghost2501,

Our tech support person who knows the answer for your repair question is out of the country right now. I will forward your question to his email though, so that he may be able to see it when he gets the chance to check his email.

Thank you for your patience.

Hi evan, Since you have a 20 column display, and the word 'Hello' is 5 characters, it'll be best to put the cursor at column 8. So before sending 'Hello' send command 0xFE, 0x47, 0x08, 0x01. <0x08> is the column, <0x01> is the row (change this to 0x02 if you want the text in the second row, 0x03 for...

Hi ghost2501,

Yes, you should be able to check this with a voltmeter, but in case you do not have one, the GPOs are at 5V.

Hi evan, It's good to hear that we are moving forward. 'K' is 0x4B, and I see that in clrscrn() you have 0x4B loaded in the SSPBUF without the command prefix 0xFE, this is why you see the 'K'. You should load in 0xFE first then 0x4B. I want to remind you to address the slave with 0x5C. We should hav...

Hi evan, This is just one thing I want to suggest, all the actions on the I2C transaction will result to the same flag being set, so instead of checking for: SSPCON2bits.SEN = 1; //send start bit while(SSPCON2bits.SEN); //wait for it to clear or SSPCON2bits.PEN = 1; //send stop bit while(SSPCON2bits...

Hi evan, You are right, the default address of the LK204-25 with jumpers 1 and 2 connected is 0x5C. Matrix Orbital does not fully follow the 7-bit addressing implemented by Philips, but it is actually a lot simpler. 0x5C is the default write address, and that 0x5D (0x5C + 1) is the read address. 0x5...

Hi evan, Thank you for posting on the forum. You should be able to see activity on the SDA and SCL pins on their own, so start with no display connected. Also, I see that you addressed the slave with 0xB8, a reminder to change the slave address on the module when you do connect it back. I'll still b...

Hi Frank, Thank you for posting on the forum. Sorry to hear that your MX212 smoked. The reason for smoking the controller (or any component) is usually a short on power and ground, or it could be too much voltage. In the case of your fan, make sure that it is hooked up correctly and that it does not...

Hi kalbanowski,

This is a reply to your old post, I thought you might like to know that now that we have re-designed the Xboard, it is working with the 2x40 VFD Noritake# CU40025SCPB-U1J

Hi Nige7,

Please try uProject which you can get from:

http://www.matrixorbital.ca/software/so ... /uproject/

Please let me know how it turns out.

Hi Jeroen, With my experience, it seems that only the VFD displays are the ones that vary in character matrix size. If you look at the display itself, you will be able to tell the size and the presence of cursor. You are right about cmd 152 for set and save brightness, this is faulty in the manual, ...

Hi Tim,

You are welcome. Please let me know how it turns out.

Best Regards,

Hi Tim, There is a capacitor by the display connector at the top of the board (populated horizontally). The right side of the cap with the white stripe is 5V and the left is gnd. This 5V is same 5V coming from the 3.5" floppy power cable, not from the USB. Please make note though, that any dama...

Hello TimEG,

Thank you for posting on the forum.

So it looks like you want to power your rotary encoder from the MO. There are a couple of ways of getting power from the MO board, but it depends on the module you have, can you please tell me what module you have and its pcb revision?

Hi bobb,

For your other question regarding the max current of backlight pins, the Xboard's max backlight current drive is limited at 500mA.