Hi,
I’m using 2x HeltecV3 modules only (No phone apart from setting up)
I have a GPS on Module-1 and the location shows on the screen.
I want to see the location of Module-1 on module-2 screen.
Is this possible?
TU
Heltec V3 GPS on second module screen
If you establish a link between the two, that’s entirely possible. There’s four options: UART (wired) or WiFi or BLE or LoRa (all wireless). Plenty of examples on the internet on how to connect two devices using any of those!
Hi B,
I have a LORA link between the two, and can send messages, but I need the technique for seeing GPS from Module-1 on Module-2 screen.
T.
Well, if you can send messages, you can just as well send a GPS coordinate! And the second module can take that message and show it on the display.
You can try Google to see if someone has already done this. Otherwise, dare I say, ChatGPT or similar is particularly fast at crafting a solution. Just take a lot of care that it may not know the right pin numbers so you have to check those yourself, and preferably also tell the type of display. And check the display pin numbers etc. Please be aware that LLMs consume a lot of energy, so once you have crafted a decent solution but there are some minor details left, you can post your code here and we’ll help with the last bits. We are no wizards that write all your code for you 
but happy to help looking at a schematic to find pin numbers.
Hi B,
The idea is for ‘say’ someone gets lost, with no phone/signal could send their coordinates to Base, so they can find them.
I’m sure if the ‘lost’ person could write down the coordinates and add them into a mesage (which would need a keyboard), that would work, but if ‘say’ they were unconcious, this would be better if it was automatic.
I’m no programmer, and don’t expect anyone to write CODE for me, but I thought this would have been done by this forum.
I’ll try a search thanks. T
This probably won’t be much help to you if your programming experience is limited because there’s still a bit of coding to do, but I have petty much done this with a range of processors, including the WiFi LoRa 32 (V2 & V3) module.
I use a formal packet structure, which includes the option for a ‘GPS payload’, to communicate between processors via LoRa. The packet structure is ‘radio software agnostic’ although I use either the Sandeep Mistry LoRa or Heltec LoRa_APP (or LoRaWan_APP) libraries. The recipient processor, in my applications this is called a Gateway because, in addition to optionally displaying the content on its display, it forwards MQTT messages to a NodeRED host. All the details are provided on the project website, but while all the tools are there, you would have to learn how to use them to construct your own application.
The background information is available here and the specific details of the packet structure and how to use it are here. There are no tutorials as such, or even step by step instructions for anything, just all the information you should need to build an application with these tools. There is example code throughout, but you would still have to put the relevant pieces together.
If this is of any use, and you feel up to the task, there are people here on this forum who can help at various levels.
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It has, for each persons own use case, but even if anyone is putting their faith in a LoRa to LoRa as an emergency system, it may well not be exactly as you want or hope for in terms of when it sends or how it displays so some coding is almost certainly likely.
However, relying on other people’s code that you can’t evaluate yourself for an emergency beacon is unwise - if it’s for a relative, that’s on you, if it’s a product, get some really good lawyers.
Hi U P,
I had a quick look at your links, and may be able to work it out (with help from a friend), if I can justify my little idea.
Thanks, T.
Hi N,
I didn’t realise that this system would be this difficult.
Thanks, T