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Varitronix MDLS-20464B 20x4 Character LCD Modulue, I have it attached using a flat 6 inch ribbon cable.

They are, the red LED flashes then everythng boots up. Not sure where. To start trouble shooting the LCD.

Still have the black boxes on the display, when I log into the RPI, I now show the ambient temp of 285 degrees, I flashed the firmware as you suggested and this is what I got. It appears to be working, I'm still having a display issue. Stopping LinkMeter OK LinkMeter platform is BCM2708 AVR...

Thats a little blurry, I will try to get a better pic.

[/IMG] This is what I found when I finally got connected to RPI. It appears that that part is working, but the heatermeter board is not connecting.

OK, I have gone over every solder joint for a second time, plug in and still get the black block LCD. I have pluged into a minitor to see whats going on at start up, not able to tell much. I have attempted to log into the device at 192.168.200.1 pluged into my router and via wireless with out...

Pics of board [/IMG] [/IMG]

I will try to get some good pics tonight and post them.

I have tried everything you guys suggested, spent the last two hours going over every solder connection with no results exept now when I power up I sometimes get no lights, sometimes get a yellow and green light and sometimes I get a green light. Most of the time I get no lights, with two rows...

I feel pretty confident it has something to do with the HM board, if it take everything apart and plug power into it, I now get a green and yellow LED, I guess I am going to have to go over it very caefully and make sure that all my solder joints are good. My magnifying glass needs to be a...

I did unzip it and use the win32diskmanager, i have looked the board over good to make sure there were no shorts or bad solder joints, i am using the 4 line display. This thing is about to drive me crazy trying to figure out what the problem may be.

Yes, that didn't do it. Im not really clear if I have done everything right as far as installing software. I copied the openwrt-rpi to the sd card, pluged it in, is there anything else I need to be doing to get it set up.

OK after about 30 seconds the Green LED stays on and the screen has the black boxes across in two lines.

Went back through and looked everything over found that one pin on the chip was not in the socket, fixed that now everything comes on and the Yellow and Green LED stay on all the time no matter what power source I use. I have this set up to run as a standalone version not sure if that makes a...

I finished everything up today, put the openwrt-rpi file on the SD card as directed in the Wiki, pluged it in and I have two lines of black squares on the LCD. The Yellow and Green LED stay on all the time, all this using the 12v plug. I used the micro USB for power, the LED's do not come on...

Thanks, now the only thing I need to figure out is where to get a 16 pin ribbon cable to tie the display to the board. This project has been an adventure for someone with no previous electronic experience.

Im getting ready to start putting my heatermeter together, reading the assembly instructions, the first resistor is 0 ohm if you use the recommended New Haven LCD display, if not the instructions say I should use the correct resistor for the display I am using. My question is I am using the...

Thanks, thats all I am waiting on now to get started putting this project together.

Having problems locating one of the resistors (MF1/4DC6800F) on the parts list. It is backordered through Mouser for approximately 5 weeks. Anyone know where I may be able to order one and get it sooner.

I am interested in a case, but plan on using this 4 line display Varitronix MDLS-20464B 20x4 Character LCD Module i purchased on eBay. Do you have a case using his display.