
Can an HC-SR04 Work as a Switch Without a Microcontroller? Schematic Options and Limits
This article explains what an HC-SR04 needs to behave like a distance-triggered switch when no MCU is available, and where the approach becomes impractical.
Schematic & Gerber restoration
MCU/CPLD code restore access & backup
1:1 exact hardware replication
BLE & Classic BT wireless solutions
Precision PID & thermal management
High-efficiency motor drive control
Industrial RS485/RTU communication
Custom STM32/ESP32 firmware & HW
Calculate the PCB trace width based on temperature rise, current, and copper thickness (IPC-2152).
Microcontrollers are the heart of embedded systems. Learn about different microcontrollers, their architectures, and how to program them for various applications. Our resources cover topics from basic introductory content to advanced techniques in embedded system design, helping you master microcontrollers and develop efficient, powerful embedded solutions.

This article explains what an HC-SR04 needs to behave like a distance-triggered switch when no MCU is available, and where the approach becomes impractical.

Learn where PIC microcontrollers fit in embedded PCB design, how they compare with other MCU choices, and what to check before using one in production.

A JTAG connector provides access for embedded debugging, programming, and boundary scan. This guide covers signals, pinout risks, and PCB layout tips.

Learn how STM32 USB CDC communication works on Android, including OTG host mode, app permissions, endpoint handling, firmware checks, and debug workflow.

The FatFS file system is a well-known file system in the field of microcontrollers. Due to its lightweight and compatibility, it is favored by MCU developers. When implementing tasks such as reading and writing files on U disks and SD

Atmega128 /328 is a powerful microcontroller that is used in a variety of application fields. It is a highly integrated 8-bit microcontroller with a wide range of peripherals and features. In this blog post, we will take a look at

What is DMA2D? With the advancement of embedded graphics, microcontrollers are taking on increasingly complex graphic computation and display tasks. However, the CPU’s processing power may not suffice for handling high-resolution and vibrant-color graphics. Fortunately, starting from the STM32F429, an

About STM32f4 Microcontrollers STM32f4 microcontrollers are 32-bit ARM Cortex-M4 microcontrollers made by STMicroelectronics. They are designed to be low-power, high-performance devices that offer a wide range of features, including a wide range of peripherals, a high-speed clock, multiple communication interfaces,

Confused by CPU, MPU, MCU, SoC, and SOPC? Simplified breakdown of definitions, architectures, and real-world applications. Ideal for embedded system designers. Guide inside!

PIC16F17146 microcontroller: USB, CAN, and advanced analog peripherals. Learn to use in industrial applications. Code examples and datasheet insights