The scenario
Build a smartphone-controlled RC car using Bluetooth. The Arduino receives commands from an HC-05 module and drives two DC motors via an L298N H-bridge.
What is in this drawing
Read the decisions behind it.
01
Use a 7805 regulator to step down 12V to 5V for logic
02
Connect HC-05 TX/RX crossed to Arduino RX/TX
03
Use L298N for bidirectional motor control
When designing a Bluetooth-controlled vehicle with separate logic and motor power supplies.
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