|Payment Terms:||L/C,T/T,Western Union,Paypal|
|Supply Ability:||1000 Unit/Units per Month low cost two axis TTL digital compass|
|Place of Origin:||Shanghai China|
|Usage:||measure the Azimuth angle|
|Measuring range:||0 ~360 degree|
|Supply Voltage:||5V DC|
|Delivery Detail:||2 weeks delivery for low cost two axis TTL digital compass|
|Packaging Detail:||cartons package for low cost two axis TTL digital compass|
ZCC220N-TTL is a high accuracy plane digital compass module. Its working principle:
Two axis perpendiculars with each other induce the earth's magnetic field at the same time
then calculate the azimuth. It communicates with PC via TTL interface. It features
stable performance and high accuracy. Also it has calibration function and you can get accurate
azimuth wherever. There are both continuous and inquiry output mode. At the same time it has declination
angle and installation angle compensatory function. It can suit different working conditions.
Application of our low cost two axis TTL digital compass
Handheld instruments and meters
·Auto helm ruder.
·Automobile GPS navigation
·Aero model position.
·Robots navigation and position
Compass placed horizontally
5V continuous output
5V Power supply
1 Declination Angle
It is the angle between magnetic north and true north. Declination angle of different place are different,
even at the same place declination angle varies with the time. When we use compass to navigating, we get
directions relative to magnetic north. So we can get directions relative to true north through declination angle
compensation. For example, the current direction counted by compass is north by east 30 degrees and the
declination angle is 5 degrees. So the direction relative to true north is 35 degrees (30+5°=35°)
2 Installation Angle
There is an arrowhead on the compass module and it’s used to denote directions.
When installed, it requests that forward direction of the object surveyed is consistent with
the arrowhead. So the direction counted by the compass is the right direction.
If installing direction is not consistent with the arrowhead, there is a included angle and
it is the deviation angle. Only after we compensate it the compass outputs the true direction.
It’s also called hard iron compensation. All digital compasses must be calibrated before used. Once hard iron conditions change, the magnetic field conditions will be changed too. At this time angle information counted by the compass will be inaccurate. In order to remove the influence, it’s necessary to calibrate the compass.
4 Calibrating methods and functions
When magnetic field changes angle information counted by compass will be in accurate.
This time it is necessary to calibrate the compass to remove the influence.
Send “P” command, and then rotate the compass two circles slowly, equably and flatly, fast not allowed. One cycle needs more than one minute. Then send “r” command to finish calibration.
1.Rapid response on any inquiry
3.100% inspection before shipment
4.Customized product is welcome .
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