I am trying to build a Distance measuring device with a LCD and Ethernet shield all combined.
I have suceeded in the W5100 part but when I add the LCD library for the LCD the Ethernet shield no longer works , as far as the web page is concerned. I am using "ajax" and my SD to display a dial on the web page but the part that fails with no error codes of any kind is the web page. The dial will not load from the SD card. I know that a 1602 lcd uses pin 4 and so does the SD so I can not use a 1602 using 8 pins so I thought I might use a I2c LCD but loading the wire and the LiquidCrystal_I2C libraries and then trying the program the display has no data and neither does the web page as far as the dial goes.
Can anyone give me some insight as to why the Sr04 and the W5100 and SD and LCD don't get along. If I rem out the 2 fore mention libraries the web page works just fine.
I have solved this issue. It was the UNO did not have enough memory to load the necessary code into memory space.