Introduction In circuit design, level matching is a fundamental requirement, yet it is often overlooked, which can lead to device failures and communication anomalies. In this article, we will reveal how to avoid device failures caused by level mismatches and provide practical design advice to ensure your circuit designs are both efficient and stable. Level … Read more
This tutorial focuses on how to use the TM1637 4-digit display module on the Raspberry Pi Pico. Required Components – Raspberry Pi Pico or Pico W– TM1637 4-digit display module– Breadboard and jumper wires– microUSB data cable TM1637 is an LED (Light Emitting Diode) driver control circuit with a keyboard scanning interface, integrating MCU digital … Read more
Click the above “blue text” to follow the DF Maker Community and become a technical beauty lover together! Now that we are gradually familiar with the Raspberry Pi, we can start doing some simple experiments! Among digital sensors, the most commonly used are I2C communication sensors. The I2C (Inter-Integrated Circuit) bus is a two-wire serial … Read more
█ How to migrate a new sensor? First, confirm whether the hardware interfaces of the motherboard and the module are consistent. Based on specific resolution, frame rate, and other requirements, obtain the corresponding register configuration from the module manufacturer, and configure the sensor driver and DTS according to the platform requirements. After completing the corresponding … Read more
MLX90614 is a digital infrared temperature sensor developed and produced by Melexis. It can measure the surface temperature of an object without contact, achieving temperature measurement by measuring infrared radiation, making it very suitable for applications that require avoiding contact with the target object or need to measure temperature in high-temperature environments. Here are some … Read more
Hardware List1. Principle of Ultrasonic Distance Measurement2. Using HCSR04 Ultrasonic Sensor3. Using LCD1602 Liquid Crystal Display1. I2C Communication Protocol on Arduino2. Displaying “Hello World!” on LCD16024. Completing Ultrasonic Distance Measurement5. Conclusion Hardware List 1. Principle of Ultrasonic Distance Measurement The ultrasonic sensor we use is the HCSR04. It has two “eyes” that function the same … Read more
RPPAL is a powerful library that provides a user-friendly interface for Raspberry Pi, allowing you to easily access peripherals such as GPIO, I2C, PWM, SPI, and UART. It not only enables you to control these peripherals effortlessly but also supports USB-to-serial adapters, allowing for more interesting development on the Raspberry Pi. The Core Advantages of … Read more
Article Overview This article will answer common questions aboutembedded system design. It begins with broad or conceptual questions. Other questions are more specific and may involve individual peripheral devices within the microcontroller. After browsing through the various topics, feel free to take some time to visitDigiKey Technical Forum. You will find more practical examples containing … Read more
↓Recommended Follow ↓ Introduction If you ask how useful gesture recognition really is, it’s hard to say; it’s neither too big nor too small. In daily life, we see it being used in various small devices like lamps and kitchen switches. From a practical standpoint, having gesture-controlled switches in the kitchen is quite nice; sometimes … Read more
There has been a rumor circulating: The hardware I2C design of STM32 has a bug, and it is better not to use it; using software I2C is more reliable. For a long time, to avoid unnecessary trouble, I have not used hardware I2C, mainly because software I2C is also quite convenient, and can be used … Read more