pymycobot

This is python API for mycobot.

We support Python2, Python3.5 or later.

myCobot

Import to your project:

# for mycobot,mecharm
from pymycobot import MyCobot

# for mypalletizer
from pymycobot import MyPalletizer

# for myBuddy
from pymycobot import MyBuddy

Note: If no parameter is given, there is no parameter; if no return value is given, there is no return value

Overall status

power_on

• Prototype: power_on()

• Description:Atom open communication (default open).

power_off

• Prototype: power_off()

• Description: Atom turn off communication.

is_power_on

• Prototype: is_power_on()

• Description: Adjust robot arm whether power on.

• Returns

  • 1: power on
  • 0: power off
  • -1: error

release_all_servos

• Prototype: release_all_servos()

• Description: Set robot arm into free moving mode.

is_controller_connected

• Prototype: is_controller_connected()

• Description: Check if connected with Atom.

• Returns

  • 1: connected
  • 0: not connected
  • -1: error

MDI mode and operation

Note: Different series of manipulators have different limits, and the angle and coordinate limits that can be set are also different. For details, please refer to the parameter introduction of the corresponding model.

get_angles

• Prototype: get_angles()

• Description: Get the degree of all joints.

• Returns: list: A float list of all degree.

send_angle

• Prototype: send_angles(id, degree, speed)

• Description: Send one degree of joint to robot arm.

• Parameters

  • id: Joint id(genre.Angle) / int 1-6
  • degree: degree value(float)
  • speed: (int) 0 ~ 100

Example

from pymycobot.mycobot import MyCobot
from pymycobot.genre import Angle

mycobot = MyCobot('/dev/ttyUSB0')
mycobot.send_angle(Angle.J2.value, 10, 50)

send_angles()

• Prototype: send_angles(degrees, speed)

• Description: Send the degrees of all joints to robot arm.

• Parameters

  • degrees: a list of degree value(List[float]), length 6 or 4.

  • speed: (int) 0 ~ 100

Example

from pymycobot.mycobot import MyCobot
from pymycobot.genre import Angle

mycobot = MyCobot('/dev/ttyUSB0')
mycobot.send_angles([0,0,0,0,0,0], 80)

get_radians

• Prototype: get_radians()

• Description: Get the radians of all joints.

• Returns: list: A float list of radian.

send_radians

• Prototype: send_radians(radians, speed)
• Description: Send the radians of all joint to robot arm.

• Parameters:

  • radians: a list of radian value(List[float]), length 6 or 4.
  • speed: (int) 0 ~ 100

Example

from pymycobot.mycobot import MyCobot
from pymycobot.genre import Angle

mycobot = MyCobot('/dev/ttyUSB0')
mycobot.send_radian([1,1,1,1,1,1], 70)

get_coords

• Prototype: get_coords()

• Description: Get the Coords from robot arm, coordinate system based on base.

• Returns: list: A float list of coord - [x, y, z, rx, ry, rz]

send_coord

• Prototype: get_coords(id, coord, speed)

• Description: Send one coord to robot arm.

• Parameters

  • id: coord id(genre.Coord) / int 1-6
  • coord: coord value(float)
  • speed: (int) 0 ~ 100

Example

from pymycobot.mycobot import MyCobot
from pymycobot.genre import Coord

mycobot = MyCobot('/dev/ttyUSB0')
mycobot.send_coord(Coord.X.value, -40, 70)

send_coords

• Prototype: send_coords(coords, speed, mode)

• Description: Send all coords to robot arm.

• Parameters

  • coords: a list of coords value(List[float]), length 6.
  • speed: (int) 0 ~ 100
  • mode: (int): 0 - angular, 1 - linear

Example

from pymycobot.mycobot import MyCobot
from pymycobot.genre import Coord

mycobot = MyCobot('/dev/ttyUSB0')
mycobot.send_coords([160, 160, 160, 0, 0, 0], 70, 0)

sync_send_angles

• Prototype: sync_send_angles(degrees, speed, timeout=7)

• Description: Send the angle in synchronous state and return when the target point is reached

• Parameters

  • degrees: a list of degree value(List[float]), length 6.
  • speed: (int) 0 ~ 100
  • timeout: default 7s.

sync_send_coords

• Prototype: sync_send_coords(coords, speed, mode, timeout=7)

• Description: Send the coord in synchronous state and return when the target point is reached

• Parameters

  • coords: a list of coords value(List[float])
  • speed: (int) 0 ~ 100
  • mode: (int): 0 - angular, 1 - linear
  • timeout: default 7s.

is_in_position

• Prototype: is_in_position(data, flag)

• Description: Judge whether in the position.

• Parameters

  • data: A data list, angles or coords, length 6.
  • flag: Tag the data type, 0 - angles, 1 - coords.

• Returns

  • 1 - true
  • 0 - false
  • -1 - error

JOG mode and operation

jog_angle

• Prototype: jog_angle(joint_id, direction, speed)

• Description: Jog control angle

• Parameters

  • joint_id: (int) 1 ~ 6
  • direction: 0 - decrease, 1 - increase
  • speed: 0 ~ 100

jog_coord

• Prototype: jog_coord(coord_id, direction, speed)

• Description: Jog control coord.

• Parameters

  • coord_id: (int) 1 ~ 6
  • direction: 0 - decrease, 1 - increase
  • speed: 0 ~ 100

jog_stop

• Prototype: jog_stop()

• Description: Stop jog moving.

pause

• Prototype: pause()

• Description: Pause movement.

resume

• Prototype: resume()

• Description: Recovery movement.

stop

• Prototype: stop()

• Description: Stop moving.

is_paused

• Prototype: is_paused()

• Description: Judge whether the manipulator pauses or not.

• Returns :

  • 1 - paused
  • 0 - not paused
  • -1 - error

set_encoder

• Prototype: set_encoder(joint_id, encoder)

• Description: Set a single joint rotation to the specified potential value.

• Parameters

  • joint_id: (int) 1 ~ 6
  • encoder: 0 ~ 4096

get_encoder

• Prototype: get_encoder(joint_id)

• Description:Obtain the specified joint potential value.

• Parameters: joint_id: (int) 1 ~ 6

• Returns: encoder: 0 ~ 4096

set_encoders

• Prototype: set_encoders(encoders, sp)

• Description: Set the six joints of the manipulator to execute synchronously to the specified position.

• Parameters:

  • encoders: A encoder list, length 6.
  • sp: speed 0 - 100

get_encoders

• Prototype: get_encoders()

• Description: Get the six joints of the manipulator.

• Returns: the list of encoder (list)

Running status and Settings

get_speed

• Prototype: get_speed()

• Description: Get speed.

• Returns: speed: (int)

set_speed

• Prototype: set_speed(speed)

• Description: Set speed.

• Parameters: speed: (int) 0 ~ 100

get_joint_min_angle

• Prototype: get_joint_min_angle()

• Description: Gets the minimum movement angle of the specified joint

• Parameters: joint_id: (int)

• Returns: angle value (float)

get_joint_max_angle

• Prototype: get_joint_max_angle()

• Description: Gets the maximum movement angle of the specified joint

• Parameters: joint_id: (int)

• Returns: angle value (float)

Servo control

is_servo_enable

• Prototype: is_servo_enable(servo_id)

• Description: Determine whether all steering gears are connected

• Parameters: servo_id (int) 1 ~ 6

• Returns

  • 0: disable
  • 1: enable
  • -1: error

is_all_servo_enable

• Prototype: is_all_servo_enable()

• Description: Determine whether the specified steering gear is connected

• Returns

  • 0: disable
  • 1: enable
  • -1: error

set_servo_data

• Prototype: set_servo_data(servo_no, data_id, value)

• Description: Set the data parameters of the specified address of the steering gear.

• Parameters:

  • servo_no: Serial number of articulated steering gear, 1 - 6.
  • data_id: Data address.
  • value: 0 - 4096

get_servo_data

• Prototype: get_servo_data(servo_no, data_id)

• Description: Read the data parameter of the specified address of the steering gear.

• Parameters:

  • servo_no: Serial number of articulated steering gear, 1 - 6.
  • data_id: Data address.

• Returns: value: 0 - 4096

  • 0: disable
  • 1: enable
  • -1: error

set_servo_calibration

• Prototype: set_servo_calibration(servo_no)

• Description: The current position of the calibration joint actuator is the angle zero point, and the corresponding potential value is 2048.

• Parameters:

  • servo_no: Serial number of articulated steering gear, 1 - 6.

release_servo

• Prototype: release_servo(servo_id)

• Description: Power off designated servo

• Parameters: servo_id: 1 ~ 6

focus_servo

• Prototype: focus_servo(servo_id)

• Description: Power on designated servo

• Parameters: servo_id: 1 ~ 6

Atom IO

set_color

• Prototype: set_color(r, g, b)

• Description: Set the color of the light on the top of the robot arm.

• Parameters

  • r: 0 ~ 255
  • g: 0 ~ 255
  • b: 0 ~ 255

set_pin_mode

• Prototype: set_pin_mode(pin_no, pin_mode)
• Description: Set the state mode of the specified pin in atom.

• Parameters

  • pin_no (int): Pin number.
  • pin_mode (int): 0 - input, 1 - output, 2 - input_pullup

set_digital_output()

• Parameters

  • pin_no (int):
  • pin_signal (int): 0 / 1

get_digital_input()

• Parameters: pin_no (int)

• Return: signal value

set_pwm_output()

• Prototype: set_pwm_output(channel, frequency, pin_val)

• Description: PWM control.

• Parameters

  • channel (int): IO number.
  • frequency (int): clock frequency
  • pin_val (int): Duty cycle 0 ~ 256; 128 means 50%

get_gripper_value

• Prototype: get_gripper_value()

• Description: Get gripper value

• Return: gripper value (int)

set_gripper_state

• Prototype: set_gripper_state(flag, speed)

• Description: Set gripper switch state

• Parameters

  • flag (int): 0 - open, 1 - close
  • speed (int): 0 ~ 100

set_gripper_value

• Prototype: set_gripper_value(value, speed)

• Description: Set gripper value

• Parameters

  • value (int): 0 ~ 100
  • speed (int): 0 ~ 100

set_gripper_ini

• Prototype: set_gripper_ini()

• Description: Set the current position to zero, set current position value is 2048.

is_gripper_moving

• Prototype: is_gripper_moving()

• Description: Judge whether the gripper is moving or not

• Returns

  • 0 : not moving
  • 1 : is moving
  • -1: error data

Basic

get_basic_input

• Prototype: get_basic_input(pin_no)

• Description: Get bottom pin.

• Parameters

  • pin_no (int) Pin number.

• Return: pin_signal (int) 0 / 1

set_basic_output

• Prototype: set_basic_output(pin_no, pin_signal)

• Description: Set bottom pin.

• Parameters

  • pin_no (int) Pin number.
  • pin_signal (int): 0 / 1

set_ssid_pwd

• Prototype: set_ssid_pwd(account, password)

• Description: Change connected wifi.(Apply to m5 or seeed)

• Parameters

  • account (str) new wifi account.
  • password (str): new wifi password.

get_ssid_pwd

• Prototype: get_ssid_pwd()

• Description: Get connected wifi account and password.(Apply to m5 or seeed)

• Return: (account, password).

set_server_port

• Prototype: set_server_port(port)

• Description: Change the connection port of the server.

• Parameters

  • port (int) The new connection port of the server.

get_tof_distance

• Prototype: get_tof_distance()

• Description: Get the detected distance (Requires external distance detector).

• Return: int The unit is mm.

Raspberry pi -- GPIO

gpio_init

• Prototype: gpio_init()

• Description: Init GPIO module, and set BCM mode.

gpio_output

• Prototype: gpio_output(pin, v)

• Description: Set GPIO port output value.

• Parameters

  • pin (int) Pin number.
  • v (int): 0 / 1

Angle

from pymycobot import Angle

Description

Instance class of joint. It's recommended to use this class to select joint.

Coord

from pymycobot import Coord

Description

Instance class of coord. It's recommended to use this class to select coord.

utils (Module)

This module support some help method.

Usage:

from pymycobot import utils

get_port_list

• Prototype: get_port_list()

• Description: Get the all serial port list.

• Return: serial port list (list)

detect_port_of_basic

• Prototype: detect_port_of_basic()

• Description: Returns the serial port string of the first detected M5 Basic. If it is not found, it returns None.

• Return: detected port (str) or None

Example:

from pymycobot import MyCobot, utils
port = utils.detect_port_of_basic()
if port is None:
 raise Exception('Detection failed.')
mycobot = MyCobot(port, 115200)

MyCobotSocket

Note: raspberryPi version Only supports python3 The robotic arm that uses this class of premise has a server and has been turned on.

Use TCP/IP to control the robotic arm

Client

# demo
from pymycobot import MyCobotSocket
# Port 9000 is used by default
mc = MyCobotSocket("192.168.10.10","9000")
# M5 not neet connect
# mc.connect("/dev/ttyAMA0","1000000")

res = mc.get_angles()
print(res)

mc.send_angles([0,0,0,0,0,0],20)
...

Server

Server file is in the demo folder

socket control

Note: Most of the methods are the same as the class mycobot, only the new methods are listed here.

connect

• Prototype: connect(serialport, baudrate, timeout)

• Description: Connect the robot arm through the serial port and baud rate

• Parameters

  • serialport: (str) default /dev/ttyAMA0.
  • baudrate: default 1000000.
  • timeout: default 0.1.

set_gpio_mode

• Prototype: set_gpio_mode(mode)

• Description: Set pin coding method.

• Parameters

  • mode (str) "BCM" or "BOARD".

set_gpio_out

• Prototype: set_gpio_out(pin_no, mode)

• Description: Set the pin as input or output.

• Parameters

  • pin_no (int) pin id.
  • mode (str) "in" or "out"

set_gpio_output

• Prototype: set_gpio_output(pin_no, state)

• Description: Set the pin to high or low level.

• Parameters

  • pin_no (int) pin id.
  • state (int) 0 or 1

get_gpio_in

• Prototype: get_gpio_in(pin_no)

• Description: Get pin level status.

• Parameters

  • pin_no (int) pin id.

# Set up the demo of the suction pump
import time
from pymycobot import MyCobotSocket
# connect server
m = MyCobotSocket("192.168.10.10", '9000')
# default serialport:/dev/ttyAMA0 Baudrate:1000000
m.connect()

m.set_gpio_mode("BCM")
m.set_gpio_out(20, "out")
m.set_gpio_out(21, "out")
# open
m.set_gpio_output(20, 0)
m.set_gpio_output(21, 0)
time.sleep(3)
# close
m.set_gpio_output(20, 1)
m.set_gpio_output(21, 1)

More demo can go to here.