It Started With a Hardware Limitation I have been using Quectel GNSS modules in my designs for a while. They are reliable, well-documented, and the support ecosystem is solid. But the module I had been using had one problem that I kept running into: no external antenna support . For most projects that is a minor inconvenience. For a marine vessel monitoring and control system , it is a non-starter. A vessel hull blocks sky view, antenna placement is critical, and the difference between a clean fix and no fix at all often comes down to whether you can mount the antenna where it actually has line of sight. An integrated antenna in a sealed enclosure below deck simply does not cut it. So I went directly to Quectel. The Conversation With Quectel I reached out through their official sample request channel. I was not expecting much — most component manufacturers have a standard process: fill out a form, wait, get a few uni...
After a little modifications done to circuit and to the RX and TX code, i manage to use it as a remote controller. I fixed four buttons in TX side and receiver will detect which button is pressed and taddaaaa i can switch on an off anything that is connected to receiver board. I took some pictures so you guys can have a look at it...still planes are in my mind to design a cool thing..........
Transmitter modified
Receiver got command to switch on these 2 LED's
Transmitter modified
Receiver got command to switch on these 2 LED's
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