{"id":2296,"date":"2012-03-04T16:57:58","date_gmt":"2012-03-04T21:57:58","guid":{"rendered":"http:\/\/www.plastibots.com\/?p=2296"},"modified":"2015-02-07T12:25:22","modified_gmt":"2015-02-07T17:25:22","slug":"adafruit-monochrome-128x32-oled-graphic-display","status":"publish","type":"post","link":"https:\/\/www.plastibots.com\/index.php\/2012\/03\/04\/adafruit-monochrome-128x32-oled-graphic-display\/","title":{"rendered":"Adafruit Monochrome 128×32 OLED graphic display"},"content":{"rendered":"

\"\" I recently got my hands on the Adafruit Monochrome 128×32 OLED graphic display<\/a> for my next project. \u00a0This is a 128×32 OLED B+W graphics chip and it’s tiny! \u00a0Don’t let its size fool you however. Being an OLED display, \u00a0text\/graphics contrasts well against the black background. \u00a0My initial intent for this display was to use it to provide information to you GPS Red Light Camera project. \u00a0It’s job would be to provide key information such as; the distance to the next red light camera location, the direction of the vehicle (and possibly direction of the camera later on), speed, # of satellites, as well as Lat and Log. \u00a0However, after some dry runs, I found that reading the information was too difficult if it was sunny out. \u00a0Of course the obvious holds true that I should not be taking the time to read this sort of info while driving anyhow. \u00a0The intent was more of an info display for viewing while stopped etc. \u00a0 However, the purpose of this write-up is not to discuss the merits of these things, but rather the quality of this display. More info on the project will come soon.<\/p>\n

<\/p>\n

So, how about the quality. \u00a0My first test was take some graphics and try to render them to the tiny screen. \u00a0 Keep in mind we are working with 128W x 32H pixels here folks. \u00a0The Adafruit tutorial<\/a> references a handle little app called LCD Assist that allows you to convert a monochrome bitmap to a character array which you can dump directly into your sketch and have it display the image. \u00a0The image to the right shows a rendering of a car. \u00a0The pixelation that is showing is due to my resizing the original image down to something that I could fit on the screen. \u00a0The two lines are drawn using a built-in drawline<\/em> function. \u00a0 The second image shows the rendering of text and variables to the screen.<\/p>\n

\"\"<\/p>\n

Example (draws Latitude and Longitude and their related values):<\/p>\n

 <\/p>\n

\/\/latitude<\/div>\n
ftoa(cVal, flat, 2);<\/div>\n
oled.drawstring(0, 3, “Lat:”);<\/div>\n
oled.drawstring(25, 3, cVal);<\/div>\n
\/\/longitude<\/div>\n
ftoa(cVal, flon, 2);<\/div>\n
oled.drawstring(65, 3, “Lng:”);<\/div>\n
oled.drawstring(90, 3, cVal);<\/div>\n

 <\/p>\n

Edit: I’ve recently added this display to my Temp \/ Humidity Monitor<\/a>.<\/p>\n

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The good:<\/span><\/strong><\/p>\n