Published: Tue 22 July 2025
By Nicholas Dietz
In Hardware .
A call for help.
A mastodon user calls for help.
https://social.tchncs.de/@Blort/114866484344816671
How to interpret step 2:
1. Arduino to the motorboard:
wire between
(ENA) UNO.~D5 and L298N.ENA
(ENB) UNO.~D6 and L298N.ENB
(N4) UNO.D7 and L298N.IN4
(N3) UNO.D8 and L298N.IN3
(N2) UNO.~D9 and L298N.IN2
(N1) UNO.~D10 and L298N.IN1
2. Connect the batteries to both the Arduino and to the motorboard
UNO.VIN and battery+ (red)
UNO.GND and battery- (black)
L298N.+12V and battery+ (red)
L298N.+5V and battery+ (red)
3. Connect the Arduino to the motorboard
(Done in step 1)
4. Mount three 10MOhm resistors to the breadboard
R1.1 to BB.GND
R2.1 to BB.GND
R3.1 to BB.GND
5. Connect the Arduino to the breadboard
UNO.A4 to R1.2
UNO.A3 to R2.2
UNO.A2 to R3.2
6. Connect three insulated wires (each a different color) to the breadboard. (Later these will be attached to the car body.)
R1.2 to BLUE (right)
R2.2 to YELLOW (left)
R3.2 to GREEN (forward)
7. Connect an insulated wire from the Arduino’s 5V pin (Later this will be attached to the metal base plate in the car)
UNO.5V to RED (base plate)
Other resources consulted
https://social.tchncs.de/@Blort/114866484344816671
https://docs.arduino.cc/resources/pinouts/A000005-full-pinout.pdf
https://docs.arduino.cc/hardware/uno-rev3/
https://docs.arduino.cc/resources/pinouts/A000066-full-pinout.pdf
https://lastminuteengineers.com/l298n-dc-stepper-driver-arduino-tutorial/