Board Pins#

Both EVOX1P and EVOX1E freeze a module named pins:

import pins

The module defines physical pins, I2C buses, PCA9685 channels and motor-port mappings used by the MicroPython firmware.

Common Constants#

M1, M2, M3 and M4: Logical motor port numbers.
MOTOR_PORTS: Dictionary mapping each logical motor port to its PCA9685 PWM channels and encoder GPIO pins. Used internally by evo.EvoMotor.
TACH11 through TACH42: Encoder input GPIO numbers for the four motor ports.
MOTOR11 through MOTOR42: PCA9685 PWM channel numbers for the four motor ports.
I2C1 through I2C8: TCA9548A multiplexer channel constants.
SDA0_PIN, SCL0_PIN, SDA1_PIN and SCL1_PIN: ESP32-S3 GPIO numbers used by the two I2C buses.
TCA9548A_ADDR, SSD1309_ADDR, SSD1309_CHANNEL, BATTERY_CHARGER_ADDRESS and PCA9685PW_ADDRESS: Default onboard I2C device addresses and OLED channel.
I2CA and I2CB: Pre-created machine.I2C bus objects.

GPIO1A, GPIO1B, GPIO2A and GPIO2B: General-purpose external GPIO pins.
SERVO1 through SERVO4: Servo output pins.
BUZZER_PIN: Buzzer GPIO pin.
BUTTON_L_PIN, BUTTON_C_PIN and BUTTON_R_PIN: Left, centre and right button GPIO pins.
NSLEEP_PIN: Shared motor-driver sleep control pin, used by enableAllMotors() and disableAllMotors() when present.
BOOT_LED_PIN and SHUTDOWN_PIN: Boot LED and shutdown-control GPIO pins.

S11 through S42: LEGO sensor-port GPIO pins.
S1 through S4: Convenience aliases for the first pin of each LEGO sensor port.
GPIO1 through GPIO8: General-purpose external GPIO aliases.
SERVO1 through SERVO8: Servo port constants.
BUZZER_PIN: Buzzer GPIO pin.
BUTTON_PIN: Main button GPIO pin.
NEOPIXEL_PIN: Neopixel status LED GPIO pin.