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meanpc

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  1. Rei - have you used the Nokia 5110 with Energia and the Adafruit GFX library yet? Should this work?
  2. Sounds like a plan. Or even use a small potentiometer to make the value adjustable by the user. I've got 5 of these displays and have found them all to need slightly different contrast values. Thanks again again Rei.
  3. Rei, Thanks so much for your help - that's exactly what I needed. I've included before and after setContrast commands to show you what a big difference it made. (I've set the contrast to 60 in the photo on the right.) Also, I did make some minor changes to that code to get it to compile (just in case anyone else is trying to use it). I had to add a comma and a close parenthesis on each line of the .cpp code, so that it looked like: Again, thanks so much for your quick and accurate reply Rei - your contributions to the Energia and 43oh communities are tremendous.
  4. Rei Vilo, Is there a way to set the contrast with this library? With the Adafruit version of this library, there is a command like: display.setContrast(50);
  5. If you need alpha testers let me know, Energia for Stellaris will be BIG
  6. Is this boosterpack available for purchase anywhere?
  7. Hello Stellarisiti! I'm coming from 43oh.com. Should be receiving my first Stellaris Launchpad in the mail tomorrow or the next day, and I'm looking forward to bugging you guys to show me how to use it. Thanks for starting this board!
  8. meanpc

    i2c LCD

    Not offended at all - I do stupid stuff all the time, so your questions are relevant. I tried SDA and SCL connected to both 1.6 and 1.7. I have the display powered from the 5V test points near the USB connector on the launchpad. I was thinking of the display's logic being passive and not having to worry about 5V coming back to the Launchpad...but I didn't check. I just measured the voltage on SDA and SCL pins of the display while it's powered up and I'm measuring 150mV, but I don't know if that measurement is valid or not.
  9. meanpc

    i2c LCD

    1. I have not confirmed this with the Launchpad. The display works fine with Arduino boards, though 2. 2553 3. 14 and 15, or P1.6,P1.7 4. 0x27 5. I am using the library found here (at the bottom of the page): http://www.dfrobot.com/index.php?route= ... GYpGk3A9TI I am just trying to upload the 'Hello World' sketch from that library which is: //YWROBOT //Compatible with the Arduino IDE 1.0 //Library version:1.1 #include #include LiquidCrystal_I2C lcd(0x27,16,2); // set the LCD address to 0x27 for a 16 chars and 2 line display void setup() { lcd.init(); // initialize the lcd // Print a message to the LCD. lcd.backlight(); lcd.print("Hello, world!"); } void loop() { }
  10. meanpc

    i2c LCD

    Has anyone gotten this display to work with Energia? http://www.sainsmart.com/module/lcd-mod ... ga-r3.html I'm not having any luck so far with this.
  11. I don't have a scope. I'm assuming the pulses are much to quick for me to capture accurately with my $30 multimeter. Would be nice if someone with an o-scope could check it out.
  12. can you sticky this? I've referred back to this post about 8 times now.
  13. I should have updated this post, but I was successful with getting the HC-SR04 to work with the MSP430/Energia a few weeks ago. http://www.meanpc.com/2012/09/using-hc- ... th-ti.html I did use the 5V pins near the USB connector, but I didn't even think about the voltage on the echo pin - good catch.
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