I am trying to upgrade my mowers to RTK. Currently I’m using a ZED-F9P in the rover and in the base station. Can I use a NEO-D9S in the rover instead of using a ZED-F9P? The ZED-F9P module in the rover stopped working and I was wondering if using the NEO would be a cheaper solution.
I could be wrong but I think the D9S is [u just[/u] a corrections receiver and isn’t an actual GPS. You’d still need a RTK GPS receiver connected to it to have a working RTK system. Plus you’d need a PointPerfect subscription to use it.
I believe it would eliminate the need for a base though so of you had one already you might be able to repurpose that as a rover.
What YellowDog said is correct. The NEO-D9S is a module that augments and provides the ZED-F9x with correction data.
Thanks for the reply. I’ve decided to purchase another ZED-F9P for the rover. Although it’s expensive, it’s the safer thing to do. My other ZED-F9P has been running for several months now as a base station having no problems.
Terry
The ZED-F9P to ZED-F9P will definitely give tighter results.
The NEO-D9S / SPARTN solution is good over broader areas where you don’t have a base, internet/cellular coverage, etc. or where you want to establish a new base location.
The NEO-D9S acts as a data demodulator for the L-Band Inmarsat birds currently used, and must be configured with reception parameters.
The ZED-F9P will need to be furnished with keys, these update periodically, so you need some minimal bandwidth method of receiving / distributing them to units in the field. The keys aren’t retained so you’ll need an MCU, or host, to push them in.
I’d like to see a NEO-D9S as a MicroMod board so I can build a SPARTN repeater.
I had two working F9P’s, and I got the error down to 17mm. I have a base station setup. On the rover machine, the USB-C interface stopped working, making it somewhat useless because I needed to reconfigure it as it wasn’t used for several weeks and all of the parameters that were saved, were lost, because the battery on the card had run down. I was just looking for a cheaper way to do what I was doing without having to purchase another F9P card.
Can you connect via the UART1 connection, and perhaps a USB-to-CMOS Serial dongle? At least confirm it’s just the USB-C connector that’s broken.
The NEO-D9S doesn’t solve for position, it just provides augmentation data to a ZED-F9P or F9R module.
One could create a SPARTN base station that could broadcast that data for ZED-F9P rovers.
Expectations there would probably be close to 5cm rather than 2cm
Do you mean TX2/RX2 or RX/MOSI and TX/MISO? I have TX2/RX2 going to the RTCM Correction modem and that works.
I connected a serial dongle to both TX/RX and nothing happens except that power is applied and the lights come on.