In my previous post i mentioned my system’s basics. Now i will show my project’s presentation video.
It is not in English but you can understand how it works.
Earlier i mentioned that it has two modes. One of rmanual another for automatic. You can choose this modes from screen.
If you want to quit just press the stop button.
You can see the distances and coordinates of the object at the manual mode.
As you noticed my 3.2″ TFT screen has 40 terminal pin and almost all of them will be used.
It is not an plug-in and use screen. So i have desing and shield for my LCD . Be aware to enlarge
other pins. Because after our shield design unused pins must not be under the shield as discarded (inert).
Another important point is; Arduino’s output high level is 5v but screens high input is 3.3V.
(I mentioned about that before). I used 330 ohms resistor and 1K ohms in series as a voltage divider.
My design can be shown from photos.
In my this writing i will introduce my new TFT LCD display.
I bought that screen because my previous screen was not good enough. It couldn’t run all UFTF library and technical support was not sufficient. So i ordered new one from ebay, sellers name is electronics_lee . It is 3.2″ touch screen (1)
first of all i only connected TFT connections without SD card and TOUCH screen pins.
My connections are same as at “UTFT_Requirements” files in page 2 and 4. (2)
Then i faced different problems at the screen. Some random lines/strip occur aat the screen while a process happening in the screen. If you have same problem i highly recommed to power of the screen because this lines are occur because of high voltage.
Arduino’s output high level is 5 volts and screen’s high volt is 3.3 volt but tolerated to 5 volts. I used 330 ohms and 1K ohms resisters as a voltage divider for all outputs of arduino. Divided (reduced) voltage goes to the screen. After this correnction , screen works fine.
(1) 3.2″inch TFT LCD Display module + touch panel & SD card cage for Arduinohttp://www.ebay.com/itm/3-2-inch-TFT-LCD-Display-module-touch-panel-SD-card-cage-Arduino-/271201097446?pt=LH_DefaultDomain_0&hash=item3f24d856e6
(2) Download “UTFT.rar” http://henningkarlsen.com/electronics/library.php?id=51