• sales

    +86-0755-88291180

Python HTTP Request Communication

Python HTTP Request Communication

This chapter introduces how to use a Python demo to communicate with the robotic arm through HTTP requests.
HTTP (Hypertext Transfer Protocol) is a protocol for data communication on the Web, which is an object-oriented protocol on the application layer. It realizes wireless communication mainly based on the WiFi module in a simple, flexible Request-Response model.
Before running the Python demo, you need to install Python on your systems, configure the Python virtual environment, and install all the packages needed for demos. For more details, you can refer to RoArm-M2-S Python UART Communication.
There are four Python demos on the RoArm-M2-S. The Python demo for HTTP request communication is http_simple_ctrl.py as shown below:

import requests
import argparse


def main():
    parser = argparse.ArgumentParser(description='Http JSON Communication')
    parser.add_argument('ip', type=str, help='IP address: 192.168.10.104')

    args = parser.parse_args()

    ip_addr = args.ip

    try:
        while True:
            command = input("input your json cmd: ")
            url = "http://" + ip_addr + "/js?json=" + command
            response = requests.get(url)
            content = response.text
            print(content)
    except KeyboardInterrupt:
        pass


if __name__ == "__main__":
    main()

Before running the demo, you need to confirm the IP address of the robotic arm, which is related to the WiFi mode of the robotic arm. For more details, you can refer to RoArm-M2-S WIFI Configuration.

  • If the WiFi mode of the robotic arm is in AP mode, the IP address is 192.168.4.1.
  • If the WiFi mode of the robotic arm is in STA mode, the IP address can be obtained from the OLED screen.

Using the following commands to run the HTTP for communication demo request, The IP address in the command should be changed to the IP address of your robotic arm.

python http_simple_ctrl.py 192.168.4.1

Note: In either mode, the robotic arm needs to be on the same LAN as the device on which the script is running.
RoArm-M2-S Python HTTP Request Communication.png
After running, you can view the returned information, and then input the JSON commands, or you can get the feedback from the robotic arm for communication.
For more details, you can refer to RoArm-M2-S JSON Command Meaning.

Demo

TAG: ESP32 C3 ST7789 Raspberry Pi Camera ESP32-S3FH4R2 ESP32 C6 Development Board 1.43 inch AMOLED QSPI Display 1.43inch TouchScreen Dual MIC AudioI Deepseek N16R8 ESP32 C3 ST7735 Raspberry Pi Secondary Screen Raspberry Pi Pico 2 RP2350 1.64 inch AMOLED Development Board Display TouchScreen 280x456 QMI8658 IMU QSPI Sipeed NanoCluster Mini Cluster Board mini data center For Raspberry Pi CM45 / Computer /LM3H /M4N Raspberry Pi 5 Camera spotpear AV to TTL Industrial USB TO RS485 2CH Converter FT2232HL Grade Isolated UART Serial TTL To RS232 B Built-In Protection Circuits Rail-mount ESP32-S3 IR Infrared Thermal Imaging Camera B 45/90 80×62 ESP32-S3-WROOM Raspberry Pi Mipi Raspberry Pi X1009 Raspberry Pi 5 PCIe To 5-Port SATA SATA3.0 (NOT BOOT From SATA) Raspberry Pi RTC WatchDog HAT (B) Real time clock Onboard DS3231SN High Precision RTC Chip Ra Jetson Orin Nano Super AI Developer Kit Built in Jetson Orin Nano 8GB Memory Core board