Add a wiring diagram (#10)

Author: raphbag

pages/build/assemble.mdx

@@ -600,10 +600,16 @@ To connect a 16CH PWM servo controller to your Raspberry Pi via I2C, use the fol
 | SDA            | SDA (Pin 3)           | Serial Data Line for I2C communication   |
 | VCC            | 3.3V (Pin 1 or 17)    | Power for the I2C logic                  |
 
+### Summary wiring diagram
+
+<a href="/assemble/wiringdiagram.pdf" target="_blank" rel="noopener noreferrer" style={{ cursor: 'pointer'}}>
+  <Image src="/assemble/wiringdiagram.png" alt="Wiring diagram" width={705} height={501}/>
+</a>
+
 ## Next Steps
 Once assembly is complete, move to [software setup](/build/setup).
 
 <Callout type="default" emoji="👉">
-  **Documentation Contributors:** @alexander-wang03, @pyrater
+  **Documentation Contributors:** @alexander-wang03, @pyrater, @raphbag
 </Callout>