It has been nearly two weeks since I last wrote a record. Who knows what I have experienced during this time? With a somewhat heavy heart, I document a recent pitfall I fell into. The heaviness comes from the fact that this pitfall was caused by a very, extremely basic mistake, and such a basic … Read more
Recommended Video This article introduces the use of the 4G module on the EPCM3568B-LI 5G intelligent edge computing gateway device. IntroductionThe EPCM3568B-LI/EPCM3568C-LI is a powerful industrial EMC edge computing gateway product developed by ZLG Zhiyuan Electronics. This product features a hardware compatibility design, standardizing the communication module interfaces. It reserves an M.2 socket for connecting … Read more
The T618(UMS512T)/T610(UMS512)/T310(UMS312) platform is an industrial-grade high-performance 4G smart module capable of running the Android operating system. It supports various standards including TDD-LTE/LTE-FDD/WCDMA/TD-SCDMA/CDMA2000/GSM; supports WiFi 802.11a/b/g/n/ac, BT5.0 LE for short-range wireless communication, and supports GPS/GLONASS/Galileo/Beidou satellite positioning; it supports various voice and audio codecs, and integrates a Mali-G52 3EE 2Core high-performance graphics engine, enabling smooth … Read more
Read the latest documents and participate in:【Find Errors in Documents to Win Prizes】 Activity The latest document content of this article can be found at: https://docs.openluat.com/air780e/at/app/command/http 1. Overview of AT Commands AT commands are an ancient method of communication that has been in use since wired communication. As of 2024, it has a history of … Read more
(⊙o⊙)…, I am sharing Arduino-related materials again. For some, it might be incomprehensible but impressive. But who told me I have been tinkering with Arduino recently~~~~ 1. Monochrome LED Module Figure 1 Monochrome LED Module Schematic As shown in Figure 1, RED corresponds to red, GRE to green, and BLU to blue, corresponding to digital … Read more
The writing of Linux kernel modules intimidates many people, but it is actually not that difficult or complicated. Here’s a basic framework to help those with a little knowledge get started quickly. 1. Basic Framework (Before Kernel 2.3.13) #include<linux/kernel.h> #include<linux/module.h> int init_module(void){ pr_info("hello module.\n"); return 0; } void cleanup_module(void){ pr_info("hello end.\n"); } MODULE_LICENSE("GPL"); #include<linux/module.h> int … Read more
Raspberry Pi: GOIP Previously used a USB SIM800-like communication module, operated the serial port with Python after connecting to the computer. Subsequently used Raspberry Pi/ESP32 as the main controller. The open-source asterisk can not only serve as a VoIP server but also bridge PSTN for making and receiving calls and SMS messages. The customized system … Read more