http://forums.leaflabs.com/topic.php?id=9130 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:08:09 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=9130#post-20199 Fri, 05 Oct 2012 15:28:56 +0000 TacoMini 20199@http://forums.leaflabs.com/ <p>That was the problem, i re-wired the breadboard to pull 5v directly from my powersupply, and hooked just the data lines and to the maple, along with common grounds.</p> <p>Thanks higwoshy! </p> http://forums.leaflabs.com/topic.php?id=9130#post-20197 Fri, 05 Oct 2012 08:58:28 +0000 higwoshy 20197@http://forums.leaflabs.com/ <p>Don't forget that maple is 3.3v and Arduino is 5v so you'll need to power LCD from an external 5v supply, or use a voltage pump to get the needed 5v from 3.3v. The backlight will work at 3.3v.</p> <p>You probably knew this already, but just in case.</p> <p>I've used this to control LCD (20x4 blue) and can confirm this works so maybe try this first:-<br /> <pre><code>// RS, En, D4,D5,D6,D7 LiquidCrystal lcd(9, 8, 7, 6, 5, 4);</code></pre> <p>No other setup was needed.</p> <p>Also you've got 16,2 in your setup when your using a 20x4, though this shouldn't make a difference in output, except formatting. </p> http://forums.leaflabs.com/topic.php?id=9130#post-20188 Thu, 04 Oct 2012 16:52:11 +0000 TacoMini 20188@http://forums.leaflabs.com/ <p>I have about 6 months of experience with Arduino, and running LCD screens, Taking analog inputs, converting them to PWM outputs etc. Pretty well versed in making the Arduino do what i want. But i have a project I am currently working that the Arduino doesn't have enough analog input resolution or pwm output resolution, so i bought a couple of Maples and want to start rewriting my code to run on the Maples. </p> <p>I figured it start by just getting my LCD screen working, it's a hacktronics 20x4 backlit screen, anyway i can't get it to work at all, except for the backlight. </p> <p>I have it wired to these pins:</p> <pre><code>#include &lt;LiquidCrystal.h&gt; LiquidCrystal lcd(34, 32, 30, 35, 33, 31, 29); void setup() { pinMode(36, OUTPUT); //Backlight Pins digitalWrite(36, HIGH); lcd.begin(16, 2); // set up the LCD&#39;s number of columns and rows // Print a message to the LCD. lcd.print(&quot;hello, world!&quot;); } void loop() { // set the cursor to column 0, line 1 // (note: line 1 is the second row, since counting begins with 0): lcd.setCursor(0, 1); // print the number of seconds since reset: lcd.print(millis()/1000); }</code></pre> <p>Do i need to set the pinmodes? the LiquidCrystal.cpp does this internally, and sets all the pins to be OUTPUT</p> <p>Am i doing something totally wrong? </p>