reinbert/ros_diffdrive_robot

Arduino code to control a differential drive robot via ROS Twist messages using a NodeMcu or ESP8266

ros_diffdrive_robot's Issues

help

Hello, help with steering the rc car with the esc with the help of the steering wheel.
if you are interested I will describe the details

What is the purpose of using rosserial?

I was just curious why rosserial was used in this project while one could have directly controlled the gpio pins through digitalwrite.

Compilation error: 'PWMRANGE' was not declared in this scope

I get this Error when I upload the code to ESP8266:
Compilation error: 'PWMRANGE' was not declared in this scope

is the defined in .h files, or should we define it?

OnTwist Issue

On this File ros_diffdrive_robot.ino
OnTwist call back:
These two variables are defined but never used:
float x = max(min(msg.linear.x, 1.0f), -1.0f);
float z = max(min(msg.angular.z, 1.0f), -1.0f);

Where are using these two variables?

Help

Greetings, Instead of the micro controller that you used, I am using a Arduino UNO. So how can i set up my arduino to the DC motor in terms of coding?

Waiting for subscriber to connect to /cmd_vel

Hello - Thank you for the great work! I am able to connect the ESP12E with my local wifi. But when I run the launch file and then
rosrun teleop_twist_keyboard teleop_twist_keyboard.py I donot see the ESP connect to ROS and waits for long as -

Waiting for subscriber to connect to /cmd_vel

Any idea what could have gone missing?