It is based on the famous integrated circuit L298, producted by STMicroelectronics, the L298 is an integrated monolithic circuit in a PowerSO20 package. It is a high voltage, high current dual fullbridge driver designed to accept standard TTL logic levels and drive inductive loads such as relays,solenoids, DC and stepping motors.
The minimum supply voltage allowed is 7V, so you can use also two-cell LiPo batteries (7.4V)that have small dimensions and low weight characteristics. The maximum supply voltage supported by this board is 30V.
To enable or disable each channel independently of the input signals there are provided two enable inputs (E1, E2) positioned on the front of the board; motor velocity regulation is obtained applying to these pins a PWM signal with a 20KHz max. frequency.
This board also provides direction LED indicators for both channels; this is very useful during setup stage to verify the firmware behaviour (also without applying a real motor to the output).
- Supply voltage 7 - 30V
- Supply current (logic) 24mA typ. (36mA max.)
- Output current 4A (2A for each channel)
- Data I / O voltage TTL standard
- Dimensions 37x36x13mm (connector included)
- Weight 12.5g / 0.44oz
- Operating temperatures -25 - 130 ° C