Data Sheet
● The maximum possible operating temperatures are -20°C...+50°C, but to reach the
maximum power performance (without additional cooling), use the board only within the
temperature range 0...+30°C.
● If the board is placed in a closed housing, take care to ensure good air circulation (from
the top, bottom and sides) to ensure good cooling of the board. Of course, if you use the
board with only low load (total current up to 15A) and without PWM, the board should not
overheat.
● To improve cooling, you can glue a thin heatsink to the bottom of the board (especially in
the zone under the outputs) through a silicone gasket.
● Use coloured wires to make it easier to distinguish your connections: red V+ for the
input; black for GND input and six power outputs.
● Use the device only in a dry place.
● If you connect the board not to Arduino microcontrollers but to controllers of other
manufacturers (or any generators or similar), namely in a non-standard way, ensure that
the input signal amplitude does not exceed that of the power supply (+5V). Otherwise, if
necessary, protection cannot block input signals. This problem will never occur if you
connect the PS as intended.
Troubleshooting
The red LED blinks and the green LED is ON continuously in normal operating mode. After
connecting the power supply, it will blink for several seconds. This means that the board is
starting up. If blinking occurs again:
A. Check that you have correctly connected the FlyBack diodes (see Fig. 11 in the DC
motors section)
B. Check that everything is connected correctly – to check that your circuit has no errors,
you can compare it with the circuit diagram in the description.
Flashing red LED and green LED is OFF (turns ON only occasionally and very briefly):
A. Check if your supply voltage (and power) is sufficient, as the green LED turns OFF when
the input voltage drops (albeit very briefly).
B. Check that you have sufficient capacity of the capacitor on the PS power input.
Yellow LED and green LED are ON – yellow turns ON (and usually is latched) due to:
A. Overcurrent on one or more channels.
B. Overheating of one or more output transistors.
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