Licky's Column

Raspberry Pi Model B

by Licky Li March 27, 2025

The Raspberry Pi Model B is a single - board computer developed by the Raspberry Pi Foundation. Here is an introduction to it: Hardware Specific...

USB type C Circuit path diagram

by Licky Li March 18, 2025

Here is the circuit path diagram and related pin description of USB Type - C3: Pin Name Description A1 GND Ground A2 SSTXp1 SuperSpeed d...

Posted in Components Sourcing

How does a mechanical clock keep accurate time?

by Licky Li March 14, 2025

A mechanical clock keeps accurate time through the following key components and principles: Escapement mechanism: This is the core component for...

Welding effect at different temperatures

by Licky Li March 12, 2025

The welding effect is significantly influenced by temperature. Here's a look at how different temperatures affect the welding process and the resul...

Posted in #soldering, solder mask

Understanding Different Types of Filters in Electronics

by Licky Li March 12, 2025

In electronics, filters are essential components that are used to selectively pass or block certain frequencies of an electrical signal. Here is an...

What problems will PCB encounter during the mounting process？

by Licky Li March 11, 2025

Here are the common problems encountered during PCB (Printed Circuit Board) mounting, along with their causes and solutions: 1. Solder Joint Issues...

Posted in #soldering, solder mask

Rf transceiver remote control circuit

by Licky Li March 06, 2025

1. Basic Working Principle Transmission End The user operates the remote - control buttons. Each button press corresponds to a specific digital...

STM32 vs STC32

by Licky Li March 05, 2025

STM32 vs STC32 Here's a comparison between STM32 and STC32 microcontrollers: 1. Manufacturer STM32: Developed by STMicroelectronics, a global ...

Types of Transistor

by Licky Li February 18, 2025

Bipolar Junction Transistor (BJT) Structure: It consists of three regions - emitter, base, and collector. There are two types of BJTs:...

Posted in Components Sourcing

How does a thyristor work?

by Licky Li January 02, 2025

A thyristor is a four-layer semiconductor device with alternating p-type and n-type materials, usually having three electrodes: an anode, a cathode...

Electromagnetic interference phenomena inside the circuit

by Licky Li December 31, 2024

Electromagnetic Interference (EMI) Phenomena Inside the Circuit Electromagnetic interference within a circuit refers to the unwanted electromagnet...

Two STM32 micro-controllers are exchanging data witlessly over LoRa using E22900T22D module that is interfaced over UART.

by Licky Li December 31, 2024

1. Components Involved STM32 Micro-controllers:STM32 microcontrollers are a popular family of microcontrollers developed by STMicroelectronics....