CoderDojo Arduino Advanced Topics

PDI controllers

Our base robot may not drive in a straight line. This is because the motors may move slightly differently although they get the same power. The way we can control this is by using servo motors or adding motor position monitoring using Proportional, Derivative, Integral PDI feedback systems. See PDI Controller

Servos

We could replace our DC motors with servo motors. Although they are much more expensive, we can control the wheel rotation more precisely.

Other sensors

IR sensors Line following sensors

Remote control

We can also add a low-cost Bluetooth remote contol system. See the [Arduino Bluetooth Wireless Serial RF Transceiver Module HC-06] (http://www.ebay.com/itm/HC-06-Slave-Bluetooth-Module-Wireless-Serial-Port-Module-Communicate-for-Arduino-/371221433944)

Power options

More battery power can also be added. Some users find that adding two additional batteries allows the robots more power.