Recently, the Raspberry Pi Foundation released the Raspberry Pi 400. This product essentially integrates the Raspberry Pi motherboard into the casing of a keyboard. Of course, it is not simply a Raspberry Pi 4B wrapped inside; the manufacturer has redesigned the circuit and PCB. All you need is an HDMI cable, a 5V power adapter, … Read more
Mini PCs are a relatively “unique” presence among computer forms. They do not have the robust physique of traditional desktop computers; they can be as small as a USB flash drive for portability or hidden behind a monitor for a tidier desk. While they seem to be an all-in-one product, why have they remained lukewarm? … Read more
The ARM Cortex-M4 flagship board is launched with exciting details below. ARM announced the launch of the new embedded processor “Cortex-M4” in February 2010, marking the fourth generation of this high-performance, low-power embedded solution, following the Taiwan Nuvoton M451 series as shown in Figure 2.1.1, with the previous three generations being Cortex-M0/M1/M3. Cortex-M4 is an … Read more
Introduction The ESP32 E-Paper Weather Display is an excellent device powered by the ESP32 microcontroller and an e-paper display. It can obtain weather information from the internet and display it on a highly readable e-paper screen, making it easy to view both indoors and outdoors. This guide references the open-source project ESP32-e-Paper-Weather-Display and will guide … Read more
Origin By chance, I stumbled upon a tutorial for flashing the AX3000T on a small video site and decided to give it a try. I purchased the device and followed the tutorial to flash uboot, testing various firmware. However, the AX3000T with its 256MB of RAM was too limited, and running the OpenClash kernel often … Read more
1. Introduction Edge network device applications must acquire, process, and understand data points at high sampling rates.MCU (Microcontroller) is a key component of many embedded systems, increasingly responsible for capturing, processing, and managing the data flowing through them. This process begins at the local device, and manufacturers are seeking innovative opportunities to understand and monetize … Read more
Please click above freefollow… This lecture will introduce the microcontroller driving the LCD1602 liquid crystal display module. Through this lecture, readers can master the working principle of the LCD1602 and how to drive the LCD1602 with a microcontroller. 1. Introduction to the Principle The liquid crystal display module has advantages such as small size, low … Read more
0x00 What is ESP_NOW? ESP-NOW is a wireless communication protocol defined by Espressif that allows for direct, fast, and low-power control of smart devices without a router. It can coexist with Wi-Fi and Bluetooth LE. Currently, it supports multiple series of SoCs such as ESP8266, ESP32, ESP32-S, and ESP32-C. ESP-NOW is widely used in smart … Read more
Recently, I mentioned that mini PCs are emerging one after another, and a new product from the brand Minisforum has appeared. This Mini PC uses a niche CPU, the R5-5625U, which is equivalent to a semi-system, priced at 1988 Yuan. Let’s take a look. First, let’s talk about the R5-5625U. It belongs to the new … Read more
With the development of the security market, the market for security cameras is expanding. Murata provides various noise reduction products, sensors, and Wi-Fi modules, contributing to the various functions of security devices. In the various functional modules of security camera systems, corresponding products from Murata Manufacturing are used, listed as follows. For detailed product series … Read more