I recently built a lorawan gateway using a Raspberry Pi 3B+. When running the test, I found that the gateway could not receive data from the lorawan terminal after running for a while. I searched for ...
Popular indoor positioning technologies include WIFI, Bluetooth, RFID, and UWB. All of these technologies require the deployment of positioning base stations. WIFI requires the deployment of APs, Blue...
The firmware for the NUCLEO_L073RZ and NUCLEO_L452RE development boards has been added to the firmware repository on github (and also updated on Mayun), and you can use the onboard STLink to download ...
Now a certain PCB prototype is 5 yuan for 5 pieces with free shipping, all colors are the same price, so cool. I have never had a suitable tool to measure weak currents in low power consumption state,...
The latest tablet quarterly tracking report released by IDC China shows that the shipment volume of China's tablet market in the first quarter of 2020 was about 3.73 million units, a year-on-year dec...[Details]
1 Introduction
With the rapid development of the national economy and the continuous improvement of people's living standards, while the transportation industry continues to develop, a lar...[Details]
Realme Vice President and Global Marketing President Xu Qi published a post today revealing the screen features of the Realme X7 series, which will be released on September 1. The details are as foll...[Details]
There are two main methods for detecting liquid levels. In addition to float or tuning fork
sensors
, there is also a detection device that does not need to be in direct contact with the ...[Details]
Refers to car headlights that use white LEDs. Toyota's top-of-the-line hybrid car, the Lexus LS600h, released on May 17, 2007, was equipped with white light-emitting diode (LED) headlights for...[Details]
Because we need to save the waybill number, but we don't want to use a string to save it, we use the uint_64_t type to save the data. When transmitting, we need to convert it into a byte array. Using...[Details]
1. Display screen ratio size: length * width 4:3/16:9.
2. Display screen wind resistance level: The column should take into account the bottom foundation land conditions, and the installation should...[Details]
/************************************************************** ;eeprom.c can be used in AVR microcontrollers, ATMEGA16 and ATMEGA8, under GCC ;Compiled. November 1, 2009! Chen Yongfei has tested it...[Details]
Introduction
Due to the energy storage characteristics of capacitors, they are widely used in circuits such as rectification, filtering, coupling, and oscillation, and have almost become an ind...[Details]
A standard way to configure a backlight is to use two discrete devices: a 100 V MOSFET in a DPAK package, and a 100 V Schottky diode, also in a DPAK package. The high leakage current of the Schottky ...[Details]
On October 17, XCMG Group's first power battery rolled off the production line at XCMG New Energy Power Technology Co., Ltd.
Yang Dongsheng, Chairman of XCMG Group and XCMG Machinery, sa...[Details]
This article will show you how to make an LED flower that can sense humidity. This video will explain how the circuit works. This is a versatile project. It can be placed in a glass container and...[Details]
introduction SPWM (Sinusoidal PWM) is a relatively mature and widely used PWM method. An important conclusion in the sampling control theory mentioned above is that when narrow pulses with equal impu...[Details]
Wearable electronic devices have become the new focus of brand manufacturers, and smart glasses will set off a new gold rush in the semiconductor market. The Google Glass market is hot, attracting ma...[Details]
According to foreign media reports, recently, the British consumer rights organization "Which?" filed an antitrust lawsuit against Apple on behalf of approximately 40 million iCloud users, accusing...[Details]
MEMS sensors
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