Use the USB port on your computer to interface to various electronic devices.
USBmicro U401 Versatile I/O
USBmicro U421 Versatile I/O
USBmicro U451 Relay Board
USB PIR detector
CircuitGizmo Parts
Relay
30 Pin Header
3-position Screw Terminal
Home Domination
Temperature Sensor
Project Box
Red LEDs
Society of Robots Kit
Small Pushbutton
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Run BASIC, interface circuits!
Dual In-line Package versatile USB interface
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Dual-in-line package versatile USB interface
The U421 is a USB solution that is pre-built, pre-programmed, and pre-tested and will get you interfacing your PC
(Win/Linux) or Mac (OSX) to various devices in very little time! There is no USB device assembly, no driver
development, and no firmware to write. In many cases the U421 can be plugged into an experimenter's breadboard
and circuit interfacing can begin immediately. Demo software applications can be used "right out of the box".
The U421 provides a simple digital i/o interface for the PC (Win/Linux) or Mac (OSX) . Sixteen i/o lines from
the microcontroller are provided. Commands can be sent to the U421 that change the i/o lines from input to output.
I/O lines can be individually selected as inputs or outputs. The U421 supports commands to read the ports, and
if the ports are set to output, to write to the ports.
The U421 is an interface to SPI (Serial Peripheral Interface) devices. SPI is a local synchronous serial bus
that uses a clock line, two data lines, and a device select line for communication between a serial device
and a host microcontroller. The firmware on the U421 provides generic access to read and write SPI devices.
Because additional pins are available as generic i/o, the U421 can use these lines as slave select lines
and address multiple SPI devices.
The SPI subsystem of the U421 can be used as a master to communicate with SPI devices such as EEPROMS and
A/D converters. The U421 can also be used as a SPI slave to a microcontroller that uses the U421 as a
gateway to the PC (Win/Linux) or Mac (OSX).
The U421 is a convenient way to interface a standard Hitachi-type of intelligent LCD controller to USB.
The U421 is an assembled and tested circuit card that is 1.5 inches (38.1mm) long and 0.75 inches (19.1mm)
wide. The U421 is a printed circuit board in a 24-pin "DIP-like" format.
Comes with USB cable - no need to purchase one separately.
For more U421 information, see: USBmicro
For U421 projects, see: Gizmo Projects
Weekend Project: USB Motion Detector
Linux code for U401 (Make Magazine Blog)
Shortest RobotBASIC program for U421
Mail Light - Part 1 - Hardware
RobotBASIC CG Demo 1
Downloads of .pdf copy of U421 tech info: ODN
Other products that go well with this:
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