Please tell me what does it mean to subscribe to OBJECT resources in the China Mobile IoT ONENET platform?
1. Who subscribes to whom? (1) Does the MCU subscribe to the resources in the NBIOT module? (...
The AT32WB415 chip is equipped with a so-called ERTC, and a corresponding routine is provided for testing. The test result is shown in Figure 1.Figure 1: Operation effect
In the example, in addition t...
1. Requirements:
1. Produce a complete circuit board with reasonable layout and wiring, and uniform and reliable solder joints.
2. The circuit board can download the program, that is, the microcontrol...
[i=s]This post was last edited by nich20xx on 2020-6-9 07:17[/i]1 Introduction
The Basic Mode of SensorTile.box allows users to experience the SensorTile.box without any programming. After unboxing th...
LiDAR, who else wants to join the game at this time? And it is none other than Geely, which is good at multi-track layout. It has just released two self-developed lidars through its subsidiary Yika...[Details]
Today, a domestic digital blogger posted a photo of the tempered glass film of Xiaomi MIX 4. From the tempered glass film, it can be seen that there are no holes on the front of MIX 4, the curvature ...[Details]
On March 6, the Dongguan Municipal Development and Reform Bureau issued an announcement to solicit public opinions on the "Dongguan New Energy Storage Battery Product Export Certification Subsidy G...[Details]
On January 8, in response to rumors that Huawei was entering the consumer desktop market, Huawei Group Senior Vice President Zhang Shunmao said in an interview that Huawei does provide chips for dome...[Details]
According to news on November 9, the whistleblower Tech_Reve claimed on the X platform that Apple is using large language models (LLM) to completely transform Siri into the "ultimate virtual assistan...[Details]
The RAM of 2440 is: 16K Instruction cache + 16K data cache + 4K Boot Internal SRAM. But we can only use 4K Boot Internal SRAM; 2440 does not have its own ROM. There are two ways to boot 2440, norfl...[Details]
1. Introduction to vector network analysis instruments: 1. What is vectorized measurement? In the field of communications, since the bandwidth and frequency range of data signal transmission are limi...[Details]
Human-machine interface (HMI) builds an interconnected bridge between humans and robots, playing an important role in fields such as industry, medical care, and consumer electronics. However, tradi...[Details]
The latest report from TF International Securities analyst Ming-Chi Kuo is positive about Apple's future strategy for iPhone products. He believes that among smartphone brands from 2021 to 2023, Appl...[Details]
One sensitive test of high-resolution ADC fidelity is the ability to faithfully digitize a sine wave. This test requires a sine wave generator with residual distortion close to 1 ppm (parts per milli...[Details]
In late July, the LG Q92 5G appeared on the Google Play Console website, and its front spy photos and key specifications were exposed. Now, this 5G phone with the model number "LGE LM-Q920N" has...[Details]
Can signals with frequencies reaching several gigahertz be captured and detected with high fidelity? If you are testing multi-gigahertz signals, choosing the right test probes and making sure your pr...[Details]
The background is to measure the size of an AC current of an impedance. The IC can generate a 50Khz AC sinusoidal signal inside. The AC current will flow through C19, C16, 1K or 300R and ret...[Details]
Four major types of motors
Motors are classified according to their working principles and structural characteristics. Common motor types include the following four:
DC motor: DC mo...[Details]
Synchronous machines, sine-cosine resolvers, etc. are widely used in fire control, aerospace, automatic control and other fields to realize the transmission of shaft-angle information between sys...[Details]
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