How to blink led in nodered using for loop | Learn free Raspberry pi online | Raspberry pi basics

If you've used node-red, you might have faced that its quite frustrating to see how difficult it gets to do something as simple as blinking an LED. Since node-red works on dataflow, its hard to create loops like this Now there's no for loop in node-red (as of now) and this code uses simple javascript function This simple program will achieve blinking of LED using Switch Connected to Raspberry Pi. The code is created for nodered and am also pasting the JSON which you can import in your node-red to verify the same code will be pasted inside * symbols. Don't copy them, just copy whats inside it ******************************************* [{"id":"407ec756.0f0118","type":"function","z":"94e7c1f9.afb24","name":"startBlink","func":"var BLINKDELAY = 1000;\n\nvar light = true;\n\nvar count = 6;\nvar brk = 0;\nvar blinker = setInterval(blink, BLINKDELAY);\n\nglobal.set(\"blinker\", blinker);\n\nfunction blink () \n{\n \n if (light) \n {\n msg.payload = 1;\n light = false;\n count--;\n }\n else {\n msg.payload = 0;\n light = true;\n }\n \n if(count === 0)\n {\n clearInterval(global.get(\"blinker\"));\n msg.payload = 0;\n brk = 1;\n }\n if(brk ===0 )\n {\n node.send(msg);\n }\n else\n {\n msg.payload = 0;\n return msg;\n }\n}\n\nreturn;","outputs":1,"noerr":0,"x":540,"y":280,"wires":[["a096acc8.f113a"]]}] ****************************************** Try this out to see how to blink led using nodered Hope you'll enjoy the series Tutorials. To support our work, please go to https://www.kitflix.com/ and purchase a course or contact us for any kind of embedded systems, IoT and Python programming consulting at support (at) kitflix.com Thank you Check all of our online courses on Udemy as well as on kitflix.com website 1. Crash Course on Embedded C Programming https://www.udemy.com/course/crash-course-on-embedded-c-programming/?referralCode=5FA1A68B167BA7B80109 And https://kitflix.com/course/crash-course-on-raspberry-pi-computer/ 2. Learn IoT using Micropython and Raspberry Pi PICO W https://www.udemy.com/course/learn-iot-using-micropython-and-raspberry-pi-pico/?referralCode=BBD8F1D49E1FE1519609 And https://kitflix.com/course/learn-iot-with-raspberry-pico-w/ 3. Start Learning Embedded Systems with AVR Atmega32 Controller https://www.udemy.com/course/embedded-systems-with-avr-microcontroller/?referralCode=50EA9C563821F5FB44BC And https://kitflix.com/course/start-learning-embedded-systems-with-avr-atmega32/ 4. Learn bits and bytes of Raspberry Pi & IoT using Node-red https://www.udemy.com/course/learn-iot-with-node-red/?referralCode=8DA0C5A26BE53D54ADE6 And https://kitflix.com/course/internet-of-things-using-node-red-and-raspberry-pi/ 5. ESP32 and Internet of Things For Absolute Beginners https://www.udemy.com/course/esp32-and-internet-of-things-for-absolute-beginners/?referralCode=EB89EDBF77AFC134B97C And https://kitflix.com/course/esp32-and-internet-of-things-for-absolute-beginner/ 6. Beginners Masterclass into Internet of Things https://www.udemy.com/course/internet-of-things-raspberrypi-azure/?referralCode=0A9FB84D5CD80F6C46E8 And https://kitflix.com/course/beginners-masterclass-into-internet-of-things/ 7. PCB design in just one day with Proteus ISIS and ARES https://www.udemy.com/course/draft/2704956/?referralCode=4901C4886CC27A8DF980 And https://kitflix.com/course/pcb-design-in-just-one-day-with-proteus-isis/ 8. Advanced Embedded Systems with Arduino https://www.udemy.com/course/learn-to-build-advanced-embedded-systems-using-arduino/?referralCode=222DC75F0A4989DD9E31 And https://kitflix.com/course/arduino-masterclass/ 9. Python Programming for Non Programmers: Quickly learn python https://www.udemy.com/course/python-programming-for-absolute-beginners-using-python-3/?referralCode=671E06400E0A30649D04 And https://kitflix.com/course/python-programming-for-non-programmers/ 10. Learn the Art and Science of PCB Design with Eagle https://www.udemy.com/course/pcb-design-with-eagle/?referralCode=975291A980A1962456D5 And https://kitflix.com/course/learn-the-art-and-science-of-pcb-design-using-eagle/ 11. Embedded Systems with 8051 Micro Controller using Embedded C https://www.udemy.com/course/embedded-systems-with-8051-micro-controller/?referralCode=AAB05D13521BCFA2BFCC And https://kitflix.com/course/embedded-systems-in-8051-micro-controller-using-c/ 12. PCB Design for everyone with EasyEDA a free and online tool https://www.udemy.com/course/pcb-design/?referralCode=FE68781F3CC585DE9905 And https://kitflix.com/course/pcb-design-for-everyone-with-easyeda-a-free-and-online-tool/ Thank you

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