raspberry pi temperature sensor ds18b20

Github:https://github.com/hicrater/raspberry-dht11-temperature.gitFirst, look at the wiring Wiring diagram Vcc Cathode Pick up the Raspberry Pi 3.3v power supply (choose one on the line) GND Negative Pick up the Raspberry

Introduced The DHT11 is a cheap accessory that includes temperature and humidity sensors, and the code is easy to use. This article describes if you use DHT11 in a Raspberry Pi, the code is python. If you have any questions, please leave a comment below. Wiring VCC Connection 5V or 3.3V Data is connected to the Gpio (I'm picking up the B

devices can be hung on the bus, with different device addresses to access different devices. Similarly, the 1-wire bus can hang multiple devices, but it has only one line, how to differentiate between different devices. There is a unique 64-bit long serial number inside each DS18B20, and this serial number value exists in the DS18B20 internal ROM. The first 8 bits are the product Type code (

as follows: APIKEY="U-ApiKey:ffa3826972d6cc7ba5b17e104ec5xxxx" APIURL="http://api.yeelink.net/v1.0/device/1949/sensor/2510/datapoints" curl --request GET --header $APIKEY $APIURL[Returned results] {"timestamp": "2014-07-28t20: 56: 51", "value": 49.23} Yeelink V1.1 API: Modify the API version number in the preceding script, and change V1.0 to V1.1. From the returned results, we can find that the API version 1.1 returns more information. [Ret

programs after startup. [2] when the air conditioner in the room is turned off, the Raspberry Pi CPU temperature increases from 42.2 degrees to 47.1 degrees, in line with actual expectations, indicating that the experiment was successful. [3] Let's use another example to store the temperature to the database, and use

STM32 Single chip microcomputer learning (one) DS18B20 temperature sensor experiment The main realization of this programDS18B20 Temperature SensorData acquisition, and leveragingSerial CommunicationTransfer the temperature data to the computerNote: The use of the general Sc

parameters: Returns a byte read back from Ds18b20 * Description: Need to configure IO, software delay to accurate * Example: no ***************************************************************** */unsigned char ds18b20_readbyte (void) {unsigned char i,retd=0; for (i=0;i Write Bytes /* ********************************************************************** * Name: ds18b20_writebyte () * Function: Writing section * Entry parameter:

distance of the obstacle. The Grove-ultrasonic Ranger has four pins, namely power supply, ground, signal pin, and one pin dangling. Connect the Raspberry Pi and module as follows: After checking out the code from GitHub, enter it in the Raspberry Pi terminal lxterminal:CD "Grove–ultrasonic Ranger"sudo python ultrason

The answer is yes. There are 26 pins on the Raspberry Pi Board, these gpio (general purpose I/O) including SPI, I²c, serial UART, 3V3 and 5V power supply. Domestic forum There is an article "RASPBMC Setting Infrared receiver" describes how to install the RASPBMC operating system for Raspberry Pi, install the infrared

, signal pin, and one pin dangling. Connect the Raspberry Pi and module as follows: After checking out the code from GitHub, enter it in the Raspberry Pi terminal lxterminal:CD "Grove–ultrasonic Ranger"sudo python ultrasonic.pyThe Raspberry

from the Yeelink website, combined with open source hardware or yeelink dedicated hardware, Almost without any programming, you can create quite complex iphone remote switches, remote water heaters, or DIY works such as PM2.5 detectors.Yeelink platform address is http://www.yeelink.net/, registration is very simple, after registration, we can in the "Account settings" to obtain the exclusive API KEY.API key is very important, the next step to modify the Python program upload data to the Yeelink

. Of course, there are smartphones and apps. The application account is very simple on the official website even detailed instructions: http://www.yeelink.net/ What is important is that we need to add two devices, one being the CPU temperature and the other being the GPU temperature. here we need to get two important things, that is, the destination for writing the program message POST (applied by ourselves

Raspberry Pi on the Cloud (1): Environment preparationRaspberry Pi on the Cloud (2): Uploading sensor data to AWS IoT and leveraging Kibana for presentation1. Sensor installation and configuration 1.1 DHT22 installationThe DHT22 is a tem