SOLO BETA User Manual
Essential Wiring Example (SOLO + Arduino Uno)
Here is an example of wiring SOLO with an Arduino uno, as can be seen:
1- Arduino has been directly powered up by SOLO, This is only allowed when the only power
source of Arduino is SOLO, so Arduino should not be powered up both by PC or the DC plug as
well as SOLO which might cause damage to Arduino ( since it accepts only one source of Power), if
you want to power up Arduino or any other modules separately, just don’t use the +5V of SOLO,
and make sure the GND pin of SOLO has been connected to the GND of your Arduino or other
modules at a single point at least.
2- The “DIR” pin of SOLO has been connected to Aruduino with a resistor in between, since the Arduino
voltage level is between 0 to 5V, but “DIR” pin on SOLO is a 3.3V input and it’s not 5V tolerant, so to use 5V
commands, you must put a resistor in between with a value from 1kΩ to 2.2kΩ. (only for “DIR” pin you can
use a resistor to lower the voltage level because it has some internal circuits for that, but, for other 3.3V
inputs like UART_TX, UART_RX, … you must directly give a 3.3V leveled signal)
www.solomotorcontrollers.com
January 2021 - Revision V_1.0.5 Copyright © 2020, All right Reversed. SOLO motor controllers.
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