After zigbee collects data and sends it to nb-iot, the data cannot be displayed normally.
This is a screenshot of the serial portThis is a screenshot of the cloud...
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1. A total of 6 passwords can be set, and the value of each password ranges from 1 to 6. 2. Users can set and modify passwords by themselves. 3. There will be a sound prompt when pressing each key and...
How to measure the power supply voltage without a multimeter? Of course there is a way...Today we will take a look at the AD function of AT32F421.AT32F421 has 15 12-bit ADC acquisition ports, which is...
DS1302 is a real-time clock chip. We can use a microcontroller to write time or read current time data. The following will guide you to learn and master this device by reading the data sheet of this ...[Details]
(Image source: American Chemical Society official website) According to foreign media reports, electric vehicles have always been affected by temperature changes, mainly because their lithium-io...[Details]
The BeiDou Navigation Satellite System (BDS) is a global satellite navigation system independently developed and operated by China. It is committed to providing high-quality positioning, navigation a...[Details]
In 1895, Marconi successfully carried out radio communication of about 3 kilometers. Six years later, in 1891, he transmitted and received Morse code telegrams across the Atlantic Ocean between Engla...[Details]
The reason is keil5 compilation configuration problem: If this configuration is not checked, 0x08000000 will be used, resulting in the HEX file address not being changed. ...[Details]
Inductance calculation formula
Kedajia specializes in the production of SMD chip power inductors, adjustable inductors, chip inductors, and molded inductors. Welcome to consult!
Induct...[Details]
Gas sensor is a commonly used detection instrument, which is widely used in coal mining, petroleum, chemical industry, electronics, metallurgy and other fields. There are certain selection skills when...[Details]
Many IoT projects fail due to unpredictable costs. One of the main factors is communication efficiency. It is necessary to communicate more efficiently and conveniently. At the same time, as the netw...[Details]
When the era of advanced autonomous driving arrives, how will we build trust between drivers and cars? On December 5, 2022, the 2022 Fourth Intelligent Cockpit and User Experience Conference was ho...[Details]
On December 26, 2019, at the No. 1 Substation of Meiyunyuan, Sino-Singapore Tianjin Eco-City, Liu Huifang, deputy director of the Power Distribution Operation and Inspection Office of the Operation...[Details]
You may be very familiar with the commonly used industrial buses such as RS232, RS485, CAN, etc. They are all ways to transmit digital signals. So, how do we transmit analog signals? In industry, it i...[Details]
Rated zero power resistor R25
Zero power resistance refers to the extremely low power consumption of the PTC thermistor when measuring the PTC thermistor value at a certain temperature, ...[Details]
The craze for painting has not yet faded, and AI Q&A has recently attracted global attention. At the beginning of the new year, ChatGPT developed by OpenAI became popular overnight. Some friends wh...[Details]
The SPI interface involves a total of 11 registers. Let’s analyze them in detail below. Let’s first look at the SPI configuration register CFG. The following table shows its entire bit structure. It...[Details]
As the automotive industry continues to develop, technical developers, scientific researchers, etc. are increasingly interested in autonomous driving. Autonomous driving is not a single technology,...[Details]