There are many Serial Data Devices that means those that use the RS232 (old mouse port). USB is now the standard interface in most computers and embedded devices. Many mini embedded sensors and devices come with High Speed Serial Interfaces.
This page lists solutions and methods to get These Devices talking with your computer. The focus will be HandHeld Computers made of the Android OS. This way you can get your hand on the Real World thru USB and Serial. USB to parallel also helps when you want to control a Relay or Solenoid Array. Wireless Interfaces also are a good Solution with Networking.
USB TTL Serial Cables The USB TTL Serial cables are a range of USB to serial converter cables which provide connectivity between USB and serial UART interfaces. A range of cables are available offering connectivity at 5V, 3.3V or user specified signal levels with various connector interfaces.
Smart phones serial terminal program. USB equipment using Silicon Laboratories CP210X, FTDI FT232 and Prolific PL2303, CDC/ACM UART to USB Bridge chips can be used to connect to your smart phone.
Zigbee Chip TI CC2531(USB-Enabled SOC Solution for 2.4-GHz IEEE 802.15.4 and ZigBee App) can be used also. Provides the same functionality and the PC for serial communication terminal.
Interface Devices to Android Gadget
This white paper will describe some of the options for connecting peripheral accessories to Android OS based tablets/phones. The main focus will be the use of the Android Open Accessory Initiative.
Android is a Linux based operating system that is becoming very popular in mobile devices such as phones and tablets. The processor in current generation Android platforms is typically ARM based with the OS being optimised to support the hardware on the platform.
Many Android platforms are now supplied with On The Go (OTG) USB ports, allowing for the USB port to be either a host or a device. Some of these OTG ports will be USB device only i.e. they can only connect to a USB host as a USB device.
usb-serial-for-android – This is a driver library for communication with Arduinos and other USB serial hardware on Android, using the Android USB Host API available on Android 3.1+.
Products from Prolific Technology
Prolific provides Android USB Host API driver solution (NO root permission needed) for connecting PL2303 USB-to-Serial devices to Android-powered devices with USB Host API mode support. The PL2303 Android JAVA driver library allows customers and developers to write Android applications to interface their PL2303 RS-232/UART devices with millions of Android USB host devices like Smartphones, Tablets, and Smart TVs.
PL2303RA USB to RS232 Bridge Controller
The PL2303RA is a low cost and high performance USB-to-Serial Bridge Controller with built-in RS232 transceiver. The PL2303RA provides a convenient solution for connecting an RS-232 full-duplex asynchronous serial device to any Universal Serial Bus (USB) capable host.