LCD Test
Objective
Display results on a touch screen LCD
Proof of Concept
LCD is connected and powered by the raspberry pi. Using the 2.4 inch 320x240 SPI LCD with Touchscreen python driver we were able to write a program in order to displace an arrow in the directions of East, Northeast, North, Northwest, and West. The touch screen will display two modes for the user to select which are “manual steering” and “automatic scanning”. After the scanning process is complete the LCD will displace the number of tags detected in the directions.
Pass criteria: Touchscreen allows the user to select mode and after scanning is complete screen with display the arrows and the number of tags detected in the directions.
Fail criteria: Touchscreen does not allow the user to select and will not display the results.
Methods
Need to ensure that the information received from the detection of the tags is being displayed for the user’s purpose. The LCD is connected to the raspberry pi and using the 2.4 inch 320x240 SPI LCD with Touchscreen python driver, we were able to write a program in order to display an arrow in the directions of East, Northeast, North, Northwest, and West, and the number of tags being detected in the directions. The touchscreen aspect of the the display would allow the user to choose between two modes which are “manual steering” which allows the user to provide a certain direction for which they want to search for RFID tags, such as East, North-East, North, North-West, or West and “automatic scanning,” which allows the user to perform a continuous sweep from East to West and back, twice.
Results
We were able to displace the arrows and the numbers of tags being detected in the directions of East, Northeast, North, Northwest, and West. We were not able to get the touchscreen aspect to work due to errors in the library and timing. Once the Phased Array Gun is on, the LCD will display PHARY Gun across the screen, while the PHARY Gun is in operation the word “scanning” will appear. After the process is complete the LCD will depict the number of tags detected in each direction.
Images
LCD Results