title: Set Up I2C Address Without Device Attached
body: <p>I've been trying to learn about I2C today, it's taken me some time to set up but I've now got a Raspberry Pi configured with <code>i2c-tools</code> installed and I can see <code>/dev/i2c-0</code>. </p>
  
  <p>However when I run <code>i2cdetect -y 0</code> I get an empty address table. This makes sense as I don't have any device connected to the I2C bus. What I would like to do is be able to write to the I2C pins and observe the output using my oscilloscope or even connect an LED so I can see state changes.</p>
  
  <p>Is this even possible, and if so how would I go about it? Thanks in advance.</p>