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Vegetronix SDI-12
to USB Translator
| Quickly turn your PC into a SDI-12 compliant
data logger, with the Vegetronix SDI-12 USB translator board.
The translator will connect to your PC through
a USB interface, and allow you to communicate with SDI-12 compliant
sensors with simple serial commands.
The USB port emulates a serial port so you can
use any serial port communication program such as the HyperTerminal
program which is installed on all Windows platforms, to communicate
with the device through a command line interface. You can also
write your own software programs to communicate with the translator
board, and merely need to target a serial port. There is no
need to deal with complex USB drivers.
The translator allows you to pass through
SDI-12 commands, or you can set up the on-board scheduler, and it
will retrieve data at specified intervals.
The low power board is powered directly from
the USB cable.
We also have an RS232 to SDI-12 translator
which may be of interest.
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SDI-12 to USB Translator
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Applications
- Ultra-fast prototyping of SDI-12 sensor networks.
- Replacement of expensive data loggers.
- Environmental/Weather monitoring.
- Control and monitoring of irrigation systems.
- SDI-12 testing of sensors.
Features
- Affordable.
- Fully SDI-12 compliant.
- Sends SDI-12 commands and passes back the
responses.
- Powered from the USB interface.
- Low power.
- Can be used with any serial communication
program.
- Command line interface.
- Can interface with up to 62 SDI-12 sensors.
- 4 mounting holes in each corner.
Pricing and Ordering Info
For volume pricing contact us.
| ORDER INFO |
| Part Number |
Description |
Price |
Purchase |
| SDI-TRANS-USB |
SDI-12 to USB translator |
$99.95 |
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Specifications
| Power consumption |
< 50mA |
| Supply Voltage |
5V from USB cable |
| Dimensions |
1.5in x 2.0in |
| Supported number of sensor |
62 |
Other Vegetronix Products of Interest
Wiring Table
|
Terminal Block TB1 (SDI-12
INTERFACE) |
| Pin |
Description |
| 1 |
GROUND |
| 2 |
SDI-12 Bus |
Commands
Open HyperTerminal - Normally under
Start/Programs/Accessories/Communications in Windows.
Set up the session for the appropriate
USB/comm port. Set the comm port setting to: 9600 baud,
8-N-1. The easiest way to figure out, which comm port number the USB
board is being references as, is to plug it in and look at the list, then
remove it and see which comm port disappears from the list.
You can setup the board to act as a
data logger and to sample the various sensors at periodic times, by using
the "ADD" command, or you can use the transparent mode, and send
the sensors any SDI-12 text string that you desire. "<CR>"
as used below means carriage return with no line feed.
| Command |
Description |
| H |
Help - Lists all of the available
commands |
ADD [sensor number (0-9)]:[Measurement number],
[sample period (in seconds, 0 for no sampling)],[use CRC (1:true/0:false)],
[Type (0:Normal,1:Concurrent,2:Continuous)]<CR> |
Add a sensor/measurement number to
the scheduler which periodically goes out and samples the specified
sensor and measurement. You can specify sample period, and type, and
if you want to use CRC.
Example: ADD 0:0,120,0,0<CR> - sensor
1 is sampled every 2 minutes without CRC. |
| DEL [sensor number
(0-9)]:[Measurement number]<CR> |
Remove a sensor/measurement from
the scheduler. |
| START<CR> |
Turn on the scheduler and begin
sampling for each sensor/measurement added using the ADD command. |
| STOP<CR> |
Turn off the scheduler and stop
sampling. |
| QUERY [sensor address (0-9)]:[Measurement number]<CR> |
Returns the information specified
by a particular ADD commands, and SDI ID string. |
| V<CR> - |
Returns the version Number of the
SDI USB Translator. |
| READ [sensor address (0-9)]:[Measurement number]<CR> |
Perform immediate measurement. |
| TRANS [String]<CR> |
Transparently sends a string to SDI
bus. |
| DATA [sensor number (0-9)]:[Measurement number]<SDI values> |
Response from logger to measurements. |
How to Get Started
The best way to get started is to order a few sample
translators and relay boards and try them out in your application. Contact
us now to purchase samples.
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