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教程

12V 延时继电器模块接线与设置:模式选择、小数点定时与自动断电实例

Posted on August 14, 2026 by MakerHub Helper
Cartoon of a royal-blue timer relay module with a red three-digit display, a blue relay cube and blue screw terminals, wired to a large glowing red panel indicator lamp, with a pale teal clock face behind and a black UK-plug power adapter entering from the corner
14
Aug

12V 延时继电器模块分两半接线:一端 6–30V 供电与触发,另一端 NO/COM/NC 只是一个干接点开关。再选 P 模式决定行为,摆小数点决定数字是秒还是分钟。

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教程

Arduino 红外遥控(HX1838):解码按键、控制 LED 和继电器

Posted on August 14, 2026 by MakerHub Helper
Cartoon of a large matte-black IR remote with blank white keys and a blue arrow pad sending teal infrared arcs to a small black receiver module with a silver shield can, beside a red LED, a green LED and a red relay board
14
Aug

HX1838 接收头的信号脚接到 Arduino 任意数字脚,IRremote 库为每次按键给你一个数字,程序就是一个 switch。旧代码跑不动,几乎都是 2.x 与 4.x 的 API 差异。

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教程

蓝牙遥控小车:Arduino + HC-05 手机 App 驱动 2WD 底盘

Posted on August 13, 2026 by MakerHub Helper
Cartoon of a dark navy smartphone showing a ring of teal arrow buttons, sending teal radio arcs to a two-wheel robot car with yellow wheels, a blue-and-green Bluetooth module and a red motor driver board on its clear acrylic deck
13
Aug

蓝牙遥控小车 = 2WD 底盘 + L298N + HC-05。手机 App 每按一键只发一个 ASCII 字符,程序用 switch-case 把它变成 H 桥状态。含配对码、命令表、接线表与完整代码。

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教程

Arduino 避障小车教程:2WD 底盘 + L298N + HC-SR04 完整代码

Posted on August 13, 2026 by MakerHub Helper
Cartoon two-wheel robot car on a clear acrylic plate with yellow-hub black tyres and a blue ultrasonic sensor at the front sending teal sonar arcs at a navy box, curving around it
13
Aug

2WD 底盘、L298N 和一颗朝前的 HC-SR04,加上一个测距—判断—行驶的循环。完整可运行代码、逐条接线表,以及电池、马达微调和舵机升级的实话。

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教程

Arduino MQ-2 烟雾燃气报警器:预热、基线校准与 ppm 到底能信几分

Posted on August 12, 2026 by MakerHub Helper
Cartoon of a large MQ-2 gas sensor with a silver wire-mesh canister on a royal blue board with a blue trimmer, grey smoke wisps curling around it and a small black buzzer sounding beside it
12
Aug

MQ-2 模块能又快又便宜地告诉你空气变了,但给不了可信的 ppm。所以照实做:预热、让 Arduino 记住洁净空气的基线,任何高过基线的爬升就报警 —— 早期预警,而不是认证探测器。

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教程

Arduino 自动垃圾桶(RBT 中三专题):HC-SR04 + SG90 舵机接线与完整代码

Posted on August 11, 2026 by MakerHub Helper
Kartun tong sampah kelabu dengan penutup terbuka diangkat oleh servo biru lut sinar di engsel, dan sensor ultrasonik biru berpita hitam di hadapan tong mengesan tangan
11
Aug

HC-SR04 量出手的距离,Arduino Uno 比对阈值,SG90 舵机把桶盖抬起来。中三 RBT 自动垃圾桶的完整做法:免焊接线表、可直接编译的代码,以及舵机为什么不能直接吃 Uno 的 5V。

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教程

HC-SR501 人体感应灯与警报:两颗电位器与误触发全解

Posted on August 11, 2026 by MakerHub Helper
Cartoon of a large HC-SR501 PIR sensor with a white honeycomb dome on a royal blue board with two orange trimmers and a yellow jumper, casting a pale teal detection fan towards a small glowing red LED
11
Aug

HC-SR501 人体感应灯与警报的完整做法:PIR 为什么只看得见变化、两颗橙色电位器与 H/L 跳线各管什么、免焊接线表、把保持时间交给 Arduino 的程序,以及三大误触发的解法。

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教程

太阳能给 Arduino/ESP32 供电:TP4056 充 18650,夜里到底能撑多久

Posted on August 10, 2026August 11, 2026 by MakerHub Helper
Cartoon of a large white-framed solar panel tilted towards a yellow sun, its white cable running to a small royal-blue charger board beside a black holder with a pale blue 18650 cell
10
Aug

太阳能板只负责充电,真正供电的是 18650。这篇把 6W 5V 板 → TP4056 → 18650 → MT3608 升压这条链路算给你看:一天能收多少电、一夜能花多少、哪些接点必须焊,以及除了太阳能板本身,其余部件都不防水。

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教程

Blynk + ESP32 手机控制继电器:模板、Auth Token、接线与离线备援

Posted on August 10, 2026 by MakerHub Helper
Cartoon of a black smartphone with a large teal toggle switch sending dotted signal arcs to a red relay module with a blue relay cube, which switches a cream desk fan
10
Aug

手机通过 Blynk IoT 云端开关继电器:模板与 Datastream 设置、Auth Token 保密、三根杜邦线接法,以及断网时靠 BOOT 键的手动备援。

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教程

Arduino LCD1602 I2C 教程:接线、装库、地址扫描与白屏修复

Posted on August 9, 2026 by MakerHub Helper
Cartoon of a 16x2 LCD module with a glowing blue screen showing two rows of blank character cells, a black I2C backpack board peeking from behind its top edge
09
Aug

带 I2C 转接板的 LCD1602 只需四根线就能接上 Arduino Uno。这篇教程带你免焊接线、安装 LiquidCrystal_I2C 库、扫出 0x27/0x3F 真实地址,并修好白屏、方块和乱码。

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About
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Latest Posts
  • 30
    Oct
    12V 电磁锁怎么接 Arduino?断电上锁、独立供电、继电器与 MOSFET No Comments on 12V 电磁锁怎么接 Arduino?断电上锁、独立供电、继电器与 MOSFET
  • 29
    Oct
    电池盒怎么选?18650 与 AA 电池盒:节数、电压和开关 No Comments on 电池盒怎么选?18650 与 AA 电池盒:节数、电压和开关
  • 29
    Oct
    ESP32-CAM 该买哪一块?AI-Thinker OV2640 还是 ESP32-S3 OV5640 No Comments on ESP32-CAM 该买哪一块?AI-Thinker OV2640 还是 ESP32-S3 OV5640
  • 27
    Oct
    电容式还是电阻式土壤湿度传感器?为什么便宜的探头插在花盆里会坏 No Comments on 电容式还是电阻式土壤湿度传感器?为什么便宜的探头插在花盆里会坏
  • 26
    Oct
    定时继电器怎么接 220V/240V 市电?多功能延时继电器模块接线与设置 No Comments on 定时继电器怎么接 220V/240V 市电?多功能延时继电器模块接线与设置
Recent Comments
  • 3–5V 迷你潜水泵怎么选、怎么驱动 on Arduino 自动浇花系统 DIY 教程(含代码)
  • 3–5V 迷你潜水泵怎么选、怎么驱动 on SIM800L 一直重启?电源掉电重启完整排查
  • 3–5V 迷你潜水泵怎么选、怎么驱动 on DRV8833 vs L298N:电池小车该选哪块电机驱动板
  • 3–5V 迷你潜水泵怎么选、怎么驱动 on 继电器模块 Arduino 接线与安全指南
  • RBT 遥控小车专题:三种遥控方式怎么选 on TP4056 怎么用:安全给 18650 充电,再升压到 5V
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At Makerhub Malaysia, our mission is to make your shopping experience for robotics and DIY electronics parts a breeze, whether you choose to shop online or visit our retail store. Discover a wide range of products for all your project needs and enjoy the excitement of our diverse selection. Visit us and unleash your creativity!

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