[i=s]This post was last edited by jinglixixi on 2022-10-19 09:55[/i]ACM32F070 is equipped with an RTC timer. If a segment LCD screen is used to display the time, the time content will be incomplete. T...
This is a new ESP32 development board that will be released soon.[b]Main Features[/b]: [list] [*]32-bit dual core processor operating at 240 MHz [*]2.4 GHz Wi-Fi - 802.11b/g/n [*]Bluetooth BLE 4.2 [*]...
(1) Hello, we used a DDR3 chip H4B1G1646E, the DDR3 clock is 66.7, and used the routine -memory_est given on the official website to test DDR3, the rate is 800MT/s, and an error occurred during full l...
Based on VS-RK3399 board, research the way to load Bluetooth and share it with everyone. Debian/Ubuntu systems are designed based on the Linux framework, and the usage is the same, for example, apt-ge...
Opportunities and Challenges:
The low-profit price war at the beginning of the LED street lamp market is also the reason for the lossGovernment relations industries
Market data:
More than 50% of China...
As the title says: I designed a comparison circuit. When the comparator output is not connected to the Bluetooth chip IO port, the state flip is normal. However, when the output is connected to the IO...
Emergency hand-held lamps powered by 6V maintenance-free batteries are widely used in rural areas. The charger used is a transformer step-down and single diode half-wave rectifier, and the charging...[Details]
In this article, the high-performance DSP developed by TI can be used as an effective confidentiality method if it is applied to PC encryption cards.
As an effective network security solution,...[Details]
In public places such as schools, government agencies, factories and mines, as well as public corridors in residential areas, the phenomenon of long-burning lights is very common, which causes a h...[Details]
This paper designs a dot matrix LED text display screen that is easy to update, expandable, and low-cost. The way to reduce costs is
① Use the Bluetooth data transmission function of mobile ph...[Details]
introduction
For the voltage regulator modules (VRMs) that power the latest computer central processing units (CPUs), power supply designers have historically used multiphase interleaved b...[Details]
Editor's note: In order to help technicians or engineers who have knowledge of PIC microcontroller assembly language quickly master the method of using C language to program PIC microcontrollers, t...[Details]
Vertical cavity surface emitting lasers (VCSELs) are gradually replacing traditional edge emitting lasers, especially in low bandwidth and short-distance communication systems where cost factors ar...[Details]
Contact resistance
is the resistance to current flow through a closed pair of contacts. This type of measurement is performed on devices such as connectors,
relays
, and switches. The...[Details]
1. Background:
The instrument system parameter detection and control of the chemical production workshop of Tangshan Coal Gas Coking Plant are all analog instruments, some of which are eve...[Details]
1. Introduction to CIF Board
Fieldbus integration based on PC system
Whether it is a master or a slave, fieldbus has won unanimous praise in the field of PC-based automation. For more...[Details]
1 Introduction to HART Protocol
HART (Highway Addressable Remote Transducer), an open communication protocol for addressable remote sensor high-speed channels, was launched by Rosemen in the U...[Details]
PV inverter manufacturer SMA has launched its first DC arc fault circuit interrupter (AFCI) PV inverter and has received UL certification.
The new SunnyBoy AFCI inverter models include 3000-US...[Details]
Spatial Division Multiplexing (SDM) MIMO processing can significantly improve spectrum efficiency and thus greatly increase the capacity of wireless communication systems. Spatial Division Multip...[Details]
LED light sources have many environmental advantages, but early products still have certain technical bottlenecks in heat dissipation and high brightness design that cannot be broken through....[Details]
Since the late 1990s, with the demand for higher system efficiency and lower power consumption, the technological update of telecommunications and data communication equipment has promoted the deve...[Details]
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