LC29H(XX) GPS/RTK HAT

[adamant]

Ich wollte nur einige Tests mit dem GPS mit einem ESP32 und NTRIP durchführen, aber ich konnte keine Firmware finden, die stabil genug wäre. Daher bleibt die Raspberry Pi-Lösung mit RTKBase, da dies wahrscheinlich die einfachste Testmöglichkeit ist – zumindest denke ich das, da ich in diesem Bereich keine Erfahrung habe.

Ich habe auch über diese App nachgedacht, um das GPS in Bewegung zu testen:
How to use Ardusimple products with SW Maps on Android smartphones/tablets

 

[adamant]

Hello everyone,

A short report on the LV29HEA RTK GPS, which promises 10Hz, but I couldn't achieve RTK-Fix at that rate. However, at 5Hz, I was able to achieve it, and it seems stable.

Here’s a configuration that worked successfully in my tests. I’m sharing it here to help others as well.



Not all settings are necessary, but for testing, I had to enable a few things to make sure the communication worked as expected.

Since I couldn't find an easy solution online for testing, I wrote a program for an ESP32 that communicates with my phone via Bluetooth. This was necessary because the LC29HEA only works at 460800 baud rate...

• GPS → ESP32 @ 460800 baud rate
• ESP32 → Phone @ 115200 baud rate

The ESP32 can also communicate via UART, but I still need to refine that version.



On iPhone, I used the SW MAPS application.
On Android, I used the GNSS Master application.

So far, my experience shows that this GPS is suitable for use in a rover at 5Hz.
For NTRIP, I used Centipede, as it provided the most stable connection.




The repeatability accuracy I observed is between 2-3 cm.

 

[RD123]

Videos showing the performance of the module:

How to use LC29H - the cheapest GPS RTK module - Indystry.cc

RTK is a cool technology but it’s also very expensive. As always with time as the adoption of the technology is growing the prices go lower and lower. The same happened with GPS RTK, these days (in 2025) you can buy LC29H from WasveShare for just $60. If you happen to have an open network …...

indystry.cc

RTK gps on a budget (Quectel LC29HEA)

I’ll send you the latest firmware via DM. Flash, and set the update rate to 5Hz with the $PQTMCFGFIXRATE command (on the module, that is). How exactly, you need to find out yourself since nobody here has gotten their hands on the actual module yet 🙂 In Ardupilot 5Hz should already be the...

discuss.ardupilot.org

Configuring the Quectel LC29HEA receiver for real-time RTK solutions

This is a follow up to my previous post in which I describe my first experience with the Quectel LC29H receiver. In this post I will go over the details on how I configured the rover and base recei…

rtklibexplorer.wordpress.com

GitHub - phryniszak/lc29h: Local RTK solution for LC29H

Local RTK solution for LC29H. Contribute to phryniszak/lc29h development by creating an account on GitHub.

github.com

 

[adamant]

Videos showing the performance of the module:

How to use LC29H - the cheapest GPS RTK module - Indystry.cc

RTK is a cool technology but it’s also very expensive. As always with time as the adoption of the technology is growing the prices go lower and lower. The same happened with GPS RTK, these days (in 2025) you can buy LC29H from WasveShare for just $60. If you happen to have an open network …...

indystry.cc

RTK gps on a budget (Quectel LC29HEA)

I’ll send you the latest firmware via DM. Flash, and set the update rate to 5Hz with the $PQTMCFGFIXRATE command (on the module, that is). How exactly, you need to find out yourself since nobody here has gotten their hands on the actual module yet 🙂 In Ardupilot 5Hz should already be the...

discuss.ardupilot.org

Configuring the Quectel LC29HEA receiver for real-time RTK solutions

This is a follow up to my previous post in which I describe my first experience with the Quectel LC29H receiver. In this post I will go over the details on how I configured the rover and base recei…

rtklibexplorer.wordpress.com

GitHub - phryniszak/lc29h: Local RTK solution for LC29H

Local RTK solution for LC29H. Contribute to phryniszak/lc29h development by creating an account on GitHub.

github.com

Hi,


What you shared is very good, but it's not entirely accurate. The module in the first link is not really recommended, because it spends more time in RTK float than in RTK fix, and it's only capable of 1Hz, which is very low.


The modules in the 2nd and 3rd links are the same ones I shared as well (LC29HEA). These are capable of achieving stable RTK fix at 5Hz. However, I uploaded a configuration that really makes it work stably. With the configs provided in those links, I couldn't reach the stability I needed.


The module in the 4th link is also not suitable for RTK fix — at least not stably. When in motion, it stays in RTK float, and getting it back to RTK fix is nearly impossible.


There are many versions of the LC29H, but only the ones ending in EA can achieve stable RTK fix at 5Hz. (Since then, I’ve made some modifications and got it working quite stably even at 7Hz.)