[导读]伺服电机是通过信号线发送一系列脉冲来控制的。控制信号的频率应为50Hz或每20ms出现一次脉冲。脉冲的宽度决定了伺服器的角度位置，这些类型的伺服器通常可以旋转180度 伺服电机是一种利用位置反馈控制其运动和最终位置的闭环系统。 RC伺服电机的 ...

A monthly overview of things you need to know as an architect or aspiring architect. Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with ...

kv4p HT is an open-source hardware VHF or UHF radio designed to plug into the USB-C port of an Android smartphone and turn it into a handheld ham radio transceiver. It’s based on an ESP32 wireless ...

I've been developing some apps with MQTT communications and have encountered a problem on Android with the Paho library. I had a couple of apps that were functioning fine until the latest update to ...

This site contains REAL public records data including criminal records, background reports, photos, court documents, address information, phone numbers, civil judgments, properties owned, social media ...

This video demonstrates how to set up a remote temperature monitoring system using an Arduino Uno R4 WiFi, an LM35 temperature sensor, and the MQTT protocol. The system captures ambient temperature ...

Community driven content discussing all aspects of software development from DevOps to design patterns. Java has been around for almost 30 years, and Oracle regularly boasts that the Java Virtual ...

A monthly overview of things you need to know as an architect or aspiring architect. Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with ...

ABSTRACT: Geospatial technologies can be leveraged to optimize the available resources for better productivity and sustainability. The resources can be human, software and hardware equipment and their ...

java.lang.RuntimeException: Error receiving broadcast Intent { act=.callbackToActivity.v0 flg=0x10 pkg=com.ceshi.demo(has extras) } in info.mqtt.android.service ...

Abstract: This research aims to develop an interactive learning system based on Arduino Uno basic material. To realize this system, Augmented Reality technology is used which will explain each Arduino ...