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Old 03-21-2013, 01:56 AM   #241
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Any thought of using that blank area for a bus to connect temp sensors and another for switches?
The DATA, 3V3 and GND connectors are all you need for the sensors and add the 5V connector for switches. The blanks area is very close to the RJ-45 and USB connectors, which are metal, so I chose to avoid them altogether.

Making a bus for the switches and temp sensors tends to configure them as a "star" network, which the app notes say you should avoid if possible, due to refection problems.
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Old 03-21-2013, 02:01 AM   #242
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Also, did you ever figure out the LCD's? I got the Raspberry Pi LCD Plate from Adafruit (i2c and buttons) and cannot seem to get it to work. I'm not sure if it is because of a conflict with the Teensy... I am currently troubleshooting.
If you're using my latest .img file for the RPi, the I2C interface should already be baked in.

I've got 8 4x20 LCD's running on the RPi I2C bus right now using another board I created.

I'm using python code ( ugh ) right now to run them, and I'm looking for a "C" library for the RPi, to make it a little easier to integrate with the php. So far no luck, but the wiringPi library looks promising.
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Old 03-21-2013, 04:09 AM   #243
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What's odd, when I run the adafruit test script for the i2c LCD plate, it registers the buttons when I push them, but no characters show up on the screen. The backlight lights but nothing else. I've checked my connections over and over and resoldered some. Going to give it a rest tonight and check again tomorrow.

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Old 03-21-2013, 04:16 AM   #244
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What's odd, when I run the adafruit test script for the i2c LCD plate, it registers the buttons when I push them, but no characters show up on the screen. The backlight lights but nothing else. I've checked my connections over and over and resoldered some. Going to give it a rest tonight and check again tomorrow.
Is the backlight blanking out the characters?
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Old 03-21-2013, 04:18 AM   #245
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Anyone else had issues with ActionDataWithMySQL.php not assigning the chip name correctly to an action? The temp value is correct but the name isn't. The chip names are all correct in the database and they are available in the dropdown.

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Old 03-21-2013, 04:20 AM   #246
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Is the backlight blanking out the characters?
I thought about that, I just have the blue and white LCD, so I'm not sure if the RGB code is messing it up.
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Old 03-21-2013, 04:27 AM   #247
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I know my blue and white Adafruit LCD will get bright enough to mask the characters, I just put a 10K pot across the pins to change the contrast. I don't have it connected to my Teensy, I'm using it on my BrewTroller.

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Old 03-21-2013, 12:11 PM   #248
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I thought about that, I just have the blue and white LCD, so I'm not sure if the RGB code is messing it up.
Make sure that the "RED" LED stays on, that's the backlight led for the non-RGB LCD.
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Old 03-21-2013, 12:55 PM   #249
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I would be interested in a board if somebody wanted to set up the group buy.

Jimmay--nicely done. This is glorious work. Excited to get my hardware.

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Old 03-21-2013, 02:25 PM   #250
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Thanks for the help, didn't think of turning the pot to the left ! Helibrewer was correct, the backlight was too bright... so it was working all along . Also the RGB code was causing the screen to go out, and using the LCD.RED fixed that.



Once I get some free time I am going to update my UI files to reflect the new PID stuff and will make that available.

I would also be interested in a board if people are doing a group buy.

@jimmayhugh are you still tweaking your board layout?

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