L ‘Arduino Motor Shield is based on the integrated L298, which is a full-bridge double driver designed to drive inductive loads such as relays, solenoids, DC motors and stepper. Coupled to a Arduino development board is used to control two DC motors, controlling the speed and direction of each independently. Among other features it is also possible to measure the absorption of each motor current. The shield also has TinkerKit connectors, which means that you can quickly create projects entering TinkerKit modules on the appropriate connectors.
Arduino Motor Shield Rev3
This shield has two separate channels , called A and B and each uses 4 Arduino pins to choose the direction of rotation, to vary the speed , to brake quickly and to measure the current flowing through the motor. In total this shield uses 8 pin. E ‘can use each channel separately to drive two DC motors or combine them to drive a bipolar stepper motor step. The shield is able to provide 2 amps for each channel, for a total maximum of 4 amperes for all the shield.
The R3 also introduces version of this shield the standard pinout 1.0 which consists of 4 additional pins: two are located near the AREF pin, are used for TWI communication, the other 2 are placed in proximity of the RESET pin. The IOREF is used to adapt the shield to the board on which it is mounted. The last is not connected and is reserved for future use.
- Operating voltage: 5V to 12V;
- Motor drivers: L298P;
- 2 DC motors or one stepper motor;
- Maximum current: 2A per channel or 4A max (with external power supply);
- Current detection: 1.65V / A;
- free and rapid braking braking function;