I received the module before the holiday, but didn't test it. I unpacked it today and tested it.This module has fewer functions, AT instruction set operation, and no secondary development, so it is aw...
A power management integrated circuit (PMIC) that expands the company’s product portfolio for fast in-vehicle charging of phones, tablets and laptops. The Qorvo ACT4751M is the industry’s first qualif...
What are the main items for Bluetooth signal testing? Frequency offset? Bit error rate? Packet loss rate? Transmit power? What other parameters need to be tested and verified? Which instrument is more...
Guan Guan believes that it does not exist.
But we can get infinitely close.What is the closest to perfect communication in your mind? Welcome to leave a message to chatToday, I saw an article about th...
According to Nantong Daily, Jiangsu Huacun Electronic Technology Co., Ltd. independently developed the first PCIe5.0 SSD storage control chip in China and successfully taped it out at TSMC. Currently...[Details]
A car's fuel consumption performance and output performance are often incompatible. The new gasoline engine added by Volkswagen to the Golf series obviously breaks this law. Not only does it have a h...[Details]
1 What is safety testing?
Safety testing is a test to see if a product may cause harm to the user during use. The basis for judging safety testing is mainly whether the safety indicators meet the req...[Details]
A current probe is a magnetic ring designed based on the Faraday principle to measure interference current signals in a conductor. It is essentially a transformer with 1 turn. A current probe can be ...[Details]
The design is based on 51 single-chip microcomputer and uses 1602 LCD for display. The frequency measurement method uses equal-precision frequency method. The external pulse is used as the start sign...[Details]
Based on the experience of several senior electrical engineers working in the field of PLC, I have listed a series of PLC interview questions and answers. Whether you are a fresher or experienced, ...[Details]
Learn about the NFC automatic test solution based on oscilloscope The NFC automatic test system, which consists of an oscilloscope (3000XT and 4000X), a Trueform waveform generator (33500, 33600 seri...[Details]
With the development of smart wearable devices, voice interaction is reaching a new turning point. It has actually entered our lives long ago, from robots that can have intelligent conversations, t...[Details]
Since when, "wearable" has become one of the ultimate evolutionary forms of all products. No matter what product or function it has, it must be integrated into a strap or a ring and finally put on a ...[Details]
///////////ISD4004 voice playback part//////////////////////////////
////When the P3.5 button is pressed, recording starts from the specified address
/// When the P3.6 key is pressed, t...[Details]
As the epidemic in India, Southeast Asia and other regions eases, overseas demand for mobile phones has rebounded significantly, and coupled with the rush of goods by mainland Chinese brand manufactu...[Details]
Definition of PLC
A programmable controller is a digital computing electronic system designed for use in industrial environments. It uses a programmable memory to store instructions for execut...[Details]
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// HW UART(J4)!!!!!! Pay special attention, there are 2 jumpers on J4 on the board that need to be placed vertically, ...[Details]
Abstract: Unity gain op amp buffers capacitive transducer and other high-impedance signal sources without the need for bias resistors.
Capacitive transducers and other high-impedance signal source...[Details]
Soft start and star-delta start are two different motor starting methods, each with its own advantages and disadvantages. In practical applications, the choice of starting method depends on factors...[Details]
DIY/Open Source Hardware
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