Holidays.net Online Store

Holdays.net Home


October 23rd, 2014
Diwali/Deepavali

October 24th, 2014
United Nations Day

October 24th, 2014
World Development Information Day

October 25th, 2014
Muharram/Islamic New Year

October 27th, 2014
World Day for Audiovisual Heritage

October 29th, 2014
World Stroke Day

October 31st, 2014
Halloween

October 31st, 2014
Nevada Day

November 1st, 2014
All Saints

November 1st, 2014
All Saints' Day

November 2nd, 2014
All Souls' Day

November 2nd, 2014
Daylight Saving Time ends

November 4th, 2014
Election Day

November 6th, 2014
World Day to Protect the Environment in War

November 6th, 2014
Return Day Delaware

November 10th, 2014
World Science Day

November 11th, 2014
Veterans Day

November 14th, 2014
World Diabetes Day

November 16th, 2014
World Day for Road Traffic Victims

November 16th, 2014
International Day for Tolerance

November 19th, 2014
International Men's Day

November 20th, 2014
Universal Children's Day

November 20th, 2014
Africa Industrialization Day

November 20th, 2014
World Philosophy Day

November 21st, 2014
World Television Day

 



Search:

Usb,serial & I2c Multi I/o, Adc, Dac And Twin Relay For Sale

Usb,serial & I2c Multi I/o, Adc, Dac And Twin Relay

Multi-Purpose I/O Board Multi-Purpose I/O Board

This is a multi purpose input / Output board that can be used directly with a PC via a USB port or with a Microcontroller either using a serial interface or I2C interface.

  1. USB interface for connecting to a PC. When connected this will present itself as a COM port and communication can commence via HyperTerminal or other terminal software (software included in the resources pack). VB can also be used using the MSComm component or indeed any program that can communicate via the COM port
  2. On board voltage regulator protects the PC from short circuits. Also when used with a microcontroller the input voltage can be up to 10V.
  3. Input connector that can accept either serial OR I2C
  4. OPTIONAL jumper to disconnect the USB chip when used with a microcontroller
  5. Standard FTDI USB to Serial chip has standard drivers for PC,MAC and Linux. The drivers are already built into Linux.
  6. Four 10 bit analogue to digital inputs with an accurate reference voltage that can be set to 1.024V, 2.048V and 4.096V
  7. Two Digital to analogue outputs that can be set to give an analogue output from 0 to +V in 63 steps.
  8. Two relays outputs up to 10A @ 250VAC and 10A 24V DC
  9. An 8 port digital switch using the ULN2803 Darlington output. This is capable of switching up to 1/2 Amp per port. and Voltages up to 50V. The o/p is pulse width modulated and so the output power can be varied.
  10. This is connected to the digital switch and can either input or output 8 channels.

Downloads:
Data sheet
User guide
Resources zip file , includes free terminal software

Serial Communication

The device is operated serially either via the USB or directly through connector (3). Initially the device will recognise the Baud rate (from a fixed set) when it receives the first carriage return. This can be 'fixed' by using the system settings. There is also an acknowledge mechanism that will enable the device to operate efficiently without connecting the hardware handshake line (CTS/RTS).

Commands are based on the VT100 command set that use escape codes. For example to turn on relay A the following would be sent to the device:

esc[1A

to turn it off would be:

esc[0A

All of the commands follow the same pattern.

I2C Communication

The device can recognise when an I2C bus is connected and automatically switch to that mode. The default address is 0x64 (8 bit) 0x32 (7 bit) but can be changed to any address within the range 2 - 0xfe by the user. When using I2C the escape codes are replaced by single byte commands.

Digital I/O

There is an 8 bit wide digital input and output port. The output is connected to a Darlington driver for driving high power devices such as motors and solenoids. The output on each channel has an independent pulse width modulation that can be varied form completely off (0) to fully on (255) in 255 steps. This could vary the brightness of lamps or speed of motors.

Analogue to Digital

There are 4 ADC channels that are continually scanned by the firmware. In addition there is a built in precision voltage reference that can be set to one of three levels, 1.024V, 2.048V and 4.096V. The setting is simply a matter of issuing a command.

Digital to Analogue

There are two analogue outputs that can be digitally controlled in 64 steps to give a range of output from 0V to 5V.


Usb,serial & I2c Multi I/o, Adc, Dac And Twin Relay

This item has been shown 18116 times.

Buy Now

Usb,serial & I2c Multi I/o, Adc, Dac And Twin Relay:
$27




Stk 350-230  Orig.  By Sanyo picture
Stk 350-230 Orig. By Sanyo


5 Pcs/lot P89lpc936fdh, 8-bit Microcontroller With Accelerated  80c51 Core picture
5 Pcs/lot P89lpc936fdh, 8-bit Microcontroller With Accelerated 80c51 Core


Motorola Mc6809e Microprocessor picture
Motorola Mc6809e Microprocessor


Ad180s10kbc Manu:eupec  Encapsulation:module,thyristor picture
Ad180s10kbc Manu:eupec Encapsulation:module,thyristor


 Mc14066bcp / Mc 14066 Quad Bilateral Switch ( Lots 7 Pcs ) picture
Mc14066bcp / Mc 14066 Quad Bilateral Switch ( Lots 7 Pcs )


Lot 1000 Pcs Of 74hc4053n Triple 2-ch Analog Multiplexer/demulti picture
Lot 1000 Pcs Of 74hc4053n Triple 2-ch Analog Multiplexer/demulti


Storm Interface Deplxt203 Access Control Keypad 3x4 28v Polymer picture
Storm Interface Deplxt203 Access Control Keypad 3x4 28v Polymer


5 Pcs Ep2c5t144i8, Cyclone Ii Device Family Data picture
5 Pcs Ep2c5t144i8, Cyclone Ii Device Family Data


Omron Industrial Automation Z-15gq22 Micro Sw Roller Plunger Spdt 15a 250v picture
Omron Industrial Automation Z-15gq22 Micro Sw Roller Plunger Spdt 15a 250v


Omron Industrial Automation Z15gq22b7k Micro Sw Roller Plunger Spdt 15a 250v picture
Omron Industrial Automation Z15gq22b7k Micro Sw Roller Plunger Spdt 15a 250v