[CODE] Arduino 4 BIT LED binary counter

Here’s my “Hello World” on Arduino. A 4-bit binary counter for arduino. If you add another LED on the 5th pin, then it can count from 0 to 31 (32 values) Circuit wired by @KataySantos [pastacode lang=”c” manual=”int%20counter%20%3D%20-1%3B%0Aint%20MAX_VALUE%20%3D%2016%3B%0A%0Avoid%20updateLED(int%20pin%2C%20int%20bit%2C%20int%20ctr)%20%7B%0A%20%20digitalWrite(pin%2C%20(ctr%20%26%20(1%3C%3Cbit))%20%3D%3D%20(1%3C%3Cbit)%20%3F%20HIGH%20%3A%20LOW)%3B%0A%7D%0Avoid%20setup()%20%7B%0A%20%20%2F%2F%20this%20runs%20once%0A%20%20pinMode(1%2C%20OUTPUT)%3B%0A%20%20pinMode(2%2C%20OUTPUT)%3B%0A%20%20pinMode(3%2C%20OUTPUT)%3B%0A%20%20pinMode(4%2C%20OUTPUT)%3B%0A%7D%0A%0Avoid%20loop()%20%7B%0A%20%20%2F%2F%20this%20runs%20repeatedly%0A%20%20counter%20%3D%20(counter%20%2B%201)%20%25%20MAX_VALUE%3B%0A%20%20updateLED(1%2C%200%2C%20counter)%3B%0A%20%20updateLED(2%2C%201%2C%20counter)%3B%0A%20%20updateLED(3%2C%202%2C%20counter)%3B%0A%20%20updateLED(4%2C%203%2C%20counter)%3B%0A%20%20delay(500)%3B%0A%7D” message=”” highlight=”” provider=”manual”/]

[CODE/PHP] JpGraph: How to output your graph as a base64 encoded image

Some times you just want to output the image created by your $graph object without having to create a separate .php script that would need to receive a bunch of parameters. Here’s a function you can pass your $graph object right before the $graph->Stroke(); call [pastacode lang=”php” manual=”function%20graphInSrc(%24graph%2C%20%24width%2C%20%24height)%20%7B%0A%20%20%24img%20%3D%20%24graph-%3EStroke(_IMG_HANDLER)%3B%0A%20%20ob_start()%3B%0A%20%20imagepng(%24img)%3B%0A%20%20%24img_data%20%3D%20ob_get_contents()%3B%0A%20%20ob_end_clean()%3B%0A%0A%20%20echo%20’%3Cimg%20width%3D%22′.%24width.’%22%20height%3D%22′.%24height.’%22%20src%3D%22data%3Aimage%2Fpng%3Bbase64%2C’.base64_encode(%24img_data).’%22%2F%3E’%3B%0A%7D” message=”” highlight=”” provider=”manual”/]