Please don't try this at home and always remember that Arduino UNO Supply voltage varies between 5V and 12V
arduino
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In this tutorial, we will show you how to build a low cost thermometer, using Arduino & DS18B20 waterproof version (Digital Temperature Sensor) Step 1: Items you need to have Arduino UNO (or other Arduino Models) DS18B20 Waterproof Resistor 4.7KOhm (Preferably 1/2Watt). You can check the Watt availability for 4.7KOhm […]
Connect to the wireless network print(wifi.sta.getip()) --nil wifi.setmode(wifi.STATION) wifi.sta.config("SSID","password") print(wifi.sta.getip()) --192.168.18.110 Arduino like IO access pin = 1 gpio.mode(pin,gpio.OUTPUT) gpio.write(pin,gpio.HIGH) gpio.mode(pin,gpio.INPUT) print(gpio.read(pin)) HTTP Client -- A simple http client conn=net.createConnection(net.TCP, false) conn:on("receive", function(conn, pl) print(pl) end) conn:connect(80,"121.41.33.127") conn:send("GET / HTTP/1.1\r\nHost: www.nodemcu.com\r\n" .."Connection: keep-alive\r\nAccept: */*\r\n\r\n") HTTP Server -- a […]
This Sensor KY-037 is easy to use, cheap and can be used in different applications. It has two outputs: AO, analog output, real-time output voltage signal of the microphone. DO, when the sound intensity reaches a certain threshold, the output high and low signal. The threshold-sensitivity can be adjusted […]