SparkFun RTK Surveyor Hookup Instructions. A monopole created for digital cameras can be used

Equipment Installation

The RTK Surveyor was created to utilize cheap, from the rack equipment. Here we’ll explain just how to build a Rover and Base.

Rover

Shown this is actually the typical RTK Rover create. A monopole created for cameras is employed. A mobile phone holder are clamped on monopod in addition to RTK Surveyor was mounted. The ?” cam bond on the monopole is actually adapted to ?” 11-TPI and a L1/L2 antenna try connected. A Male TNC to Male SMA cable connects the antenna toward RTK Surveyor. No broadcast needs because RTCM modification information is offered by a cell phone over Bluetooth.

There is completed lots of evaluation aided by the u-blox L1/L2 antenna and it’s really excellent when it comes to costs and dimensions. Mounted to a ground plate you’re going to get accomplishment. It’s simply some ungainly when attached to reach the top of a monopole. We recommend the ‘ufo’ design L1/L2 antennas because they have actually a bigger antenna aspect and a slightly larger crushed jet compared to the u-blox antenna.

If you’re looking for a monopole (aka monopod), get one which 65” in total or deeper to make sure that the antenna would be above your face. We’ve got good-luck using the Amazon Essentials brand name.

We strongly suggest against making use of a rigorous helical antenna setting as revealed below. The RTK Surveyor is not created for such designs might trigger long lasting harm to the antenna connector. The helical antenna turns out to be a large lever supply. In the event the device is actually dropped this lever is capable of harming both SMA connector and where in actuality the connector was soldered towards the PCB.

If you are buying a mobile phone clamp definitely get one which appropriate for the diameter of monopole possesses a knob to boost clamp pressure. The monopole was 27mm in diameter and we’ve got a good experience with this clamp and that clamp. Your own distance may vary.

If you’re obtaining RTCM modification information over a radio connect it is recommended that you attach a radio for the straight back associated with RTK Surveyor.

Picture hanging strips from 3M make a pleasant semi-permanent mount. Connect the 4-pin to 6-pin JST wire included with the RTK Surveyor from broadcast interface to either of this Serial Telemetry Radios (delivered in sets). We actually like these radios because they are combined from the box, either can submit or see (so that it doesn’t matter which broadcast was connected to base or rover) and they’ve got great number. We realized over a mile array (nearly 1.5 miles or 2.4km) utilizing the 500mW radios and a big 915MHz antenna from the base (read this information to find out more).

Temporary Base

A short-term or cellular base create will become necessary while you are on the go too far from a modification provider and/or cell reception. A second RTK Surveyor are installed to a tripod and is configured to perform a survey-in (aka, find by itself), after that began broadcasting RTCM modification data. This data (

1000 bytes one minute) is distributed into user’s connected broadcast of preference. For our needs, the 915MHz 500mW telemetry radios are employed simply because they supply what is essentially a serial cable tv between our base and rover.

Any tripod with a ?” cam thread will continue to work. The Amazon Requirements tripod is useful sufficient it is a bit light-weight and rickety. A cell phone holder is actually clamped towards tripod plus the RTK Surveyor is conducted inside clamp free korean dating sites. The ?” camera bond try adjusted to ?” 11-TPI and a L1/L2 antenna was attached. A Male TNC to men SMA adaptor links the antenna toward RTK Surveyor.

When the base has-been set-up with a clear view of the sky, move the build change to « Base » and switch the system on. The purple LED will blink for 60-120 seconds. As soon as the study is complete the reddish driven are continuously illuminated and RTCM facts will quickly feel shown. You are able to confirm this by viewing the LEDs about telemetry radio (a little yellow LED will blink whenever serial data is received from the RTK Surveyor). The RTK Surveyor is designed to follow the u-blox recommended survey-in of sixties and a mean 3D common deviation of 5m of all fixes. If a study doesn’t accomplish these needs it’s going to auto-restart after 10 minutes.

More pricey surveyor angles have a ?” 11-TPI thread although top of the surveyor base will often hinder the antenna’s TNC connector. Any time you decided to need a surveyor’s ‘stick’ make sure you receive a ?” extender dish to improve the antenna about an inch.

If you are buying a cell phone clamp be sure to get one this is certainly suitable for the diameter of your own tripod and has now a knob to improve clamp stress. Our tripod was 18mm in diameter and we’ve have a good knowledge about this clamp. Their usage can vary greatly.

Note: a cellular base section is useful for rapid vacations with the industry. However, the survey-in method is not recommended when it comes down to finest accuracy specifications because the positional reliability on the base will directly translate with the reliability regarding the rover. Stated in a different way, in case the base’s calulcated position is actually down by 100cm, so will any reading the rover renders. If you’re looking for greatest accuracy consider setting up a static base with set antenna. We were in a position to identify the antenna on the top of SparkFun with a great reliability +/-2mm of reliability making use of PPP!