PLC全文ProgrammableLogicController，中文为可程式逻辑控制器，其中Programmable在大陆叫可编程。PLC是工厂自动化中非常重要的操控系统。PLC于1968年提出，1969年开发成功。在还没有PLC之前，通用汽车的汽车工厂内，产线上的机械操控是透过许多继电器（Relay）、计时器（Timer）所构成，例如每10秒钟升高一次机台...
Introduction to PLC (Programmable Logic Controller) First, let us understand the term Industrial Automation before going for PLC. As we all know using machines for work in industries is more cost-effective than using humans since machines do not need money, holidays or breaks so if machines are...
DC 12V Programmable Timer Switch Trigger Cycle Time Delay Relay Module Board LED Buzzer 10 Million Times Life!USD 4.42/piece 5V Low Level Trigger One 1 Channel Relay Module DC AC 220V Interface Relay Board Shield LED Indicator for ArduinoUSD 0.61/piece ...
DC 12V Programmable Timer Switch Trigger Cycle Time Delay Relay Module Board LED Buzzer 10 Million Times Life!USD 4.42/piece 5V Low Level Trigger One 1 Channel Relay Module DC AC 220V Interface Relay Board Shield LED Indicator for ArduinoUSD 0.61/piece ...
Timer to turn an electrical light on and off using a 120v control relay. This project will use the Programmable Clock to control the 120v control relay. Test BME280 weather device: Temperature, Humidity and Pressure. Weather module: Temperature, Humidity and Pressure. Requires: Nano with USB mi...
The microcontroller on the Arduino board (ATMEGA328 in case of Arduino UNO, shown in figure below) has EEPROM (Electrically Erasable Programmable Read-Only Memory). This is a small space that can store byte variables. The variables stored in the EEPROM kept there, event when you reset or pow...
A More Reliable Delay ON Timer If you are not comfortable with the response of the above passive delay ON timer circuit, you can employ the following configuration using BJTs and a relay. This design is extremely reliable and will effectively protect your Arduino and the inverter from burning ...
#414 Decade Programmable Resistor Test Equipment building an old-fashioned 7-digit decade programmable resistor with push-button control #352 Decoding ACARS SDR, Radio decoding ACARS with rtl_acars_ng and a R820T2+RTL2832U dongle on MacOSX #339 DelayKit Guitar Effects, Audio build and test a ...
For example, if you to trigger the relay when the sensor detects blue, you need to check what are the R, G and B parameters ranges for the blue color. Then, add a condition to control the relay on or off. We have a tutorial on how to use the relay module with the Arduino. https...
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