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On the Board there are two power connector:
It should be borne in mind to power the logic part of the front of the engine feeds.
A module that allows you to control up to four DC motors. Has inputs for sensors and sensors to the current flowing through each of the supported engines.
The management module can be implemented in a simple manner by filing a logic 0 or 1 on the pin that determines the direction of rotation. The rotation speed is set via a PWM signal. In this case, to control the four engines used eight GPIO pins.
Inputs enkoderowe are subjected to the logical operation XOR, which allows us to serve two signals from the sensor kwadraturowego through a single pin interrupts.
The figure shows the principle of operation of the zones of the sensors kwadraturowych.
Read the measured current flowing through the motors is implemented by measuring the voltage, where 1 V corresponds to 1 A (5V). The output of the current sensor should be connected to terminals of the Converter an analog-to-digital (analog pins to Arduino). Current measurement allows to detect a lock of the motor shaft or other related problems of the engine.
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The table presents available forms of delivery in Poland
|9,90 PLN||17,90 PLN||1-3 days|
|14,90 PLN||22,90 PLN|
|12,90 PLN||-||1-3 days|
If the amount to pay for products exceeds 500 PLN