Some USB-to-serial port adapters and Arduino board (or its clones) with FTDI chips are not recognized by the operation system automatically.
For example when Arduino board is connected to the computer, menu Tools of the Arduino IDE has its Port menu item disabled – when the FTDI driver is not properly recognized.
This article shows how to install FTDI drivers.
Module NRF24L01+ by Nordic Semiconductor is an ultra low power 2Mbps RF transceiver IC for the 2.4GHz band. It communicates with its special protocol and designed to save battery lifetime when running on battery.
The module can be connected to another device (e.g. Arduino board) over Serial Peripheral Interface (SPI)
Robots can be controlled by a microcontroller (MCU) or a computer installed on-board – autonomous robots, or connected to a computer via communication channel – remotely operated robots. Both approaches have pros and cons:
- Autonomous robots have everything they need on-board, they do not depend on a quality and bandwidth of communication channels. But they may have limitations on computer performance and size, its not easy to modify controlling algorithms and monitor state.
- Remotely operated robots can be controlled by more powerful computer, monitoring is available for operator or developer, modification of a controlling program is much easy. But quality and bandwidth of communication channels are critical and limiting part of such system.
Intermediate solution is develop the controlling program on remotely operated robot and when it is completed – setup the program on on-board computer, leaving communication channel only for monitoring which is not such critical.
This article describes how remotely operate a robot where on-board MCU (represented by Arduino) takes care about hardware – controlling motor-drivers, monitoring sensors, providing communication, etc; a remotely connected computer displays monitored data and runs controlling algorithm. Program will be implemented on C++. Platform is Ubuntu.