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...
Today i found one of my old projects, actually experimenting stuffs. This is thing is a stepper motor controller. I think many people out there knows whats Stepper Motors are and how it works. Usually this type of motors are in printers and photocopy machines..etc. Actually the circuit i made was to interface a stepper motor to an micro controller IC so i can write a code to turn the motor to different degree and so.. usually this type of applications are used in Robots.
Before i wrote the operating code from assembly language and now i have changed it to C language and its simple and easily understandable for anyone. Hopefully some one will built a robot soon. ;)
Before i wrote the operating code from assembly language and now i have changed it to C language and its simple and easily understandable for anyone. Hopefully some one will built a robot soon. ;)
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