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Update build_hardware.md #47

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2 changes: 2 additions & 0 deletions docs/guide/build_hardware.md
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Expand Up @@ -189,7 +189,9 @@ The PCA9685 Servo controller can control up to 16 PWM devices like servos, motor
CH-1 <------------------> Servo
---
```
Here is a wiring diagram; this also shows how to power the RaspberryPi through a buck converter or BEC and the 5v header.

![donkey wiring](../assets/build_hardware/DonkeycarWiring_bb.png)

* checking connections
* The PCA9685 should appear on I2C bus 1 at address 0x40
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