#bastlirna quiz
Venkovní teploměr pod Beskydami, #DS18b20, napájeno z gridu...
Tak a teď mi někdo vysvětlete tento jev

¿Son los sensores de <3€ solo "juguetes"? 🧸

❌ ¡No para la #ciencia! 🌡️🔬

En nuestro nuevo artículo en la revista #Matrology #MDPI demostramos que, con el rigor metrológico adecuado, los #DS18B20 son herramientas robustas para proyectos #IoT

Descubre más aquí 👇
🔗 doi.org/10.3390/metr...
#ODS

Graph of boiler temperatures. Marked jump 50 ⁰C to 73 ⁰C just by embedding the sensor and some wire inside the insulation.

Sensor taped to the steel boiler, some insulation removed. Aluminium foil tape is used

The hole in the insulation foamed shut

Version 1, simple drilled hole in the insulation, part of the sensor sticks out.

So I stuck three #ds18b20 temperature sensors in our boiler. An #esp8266 and #esphome made them usable in #HomeAssisstant. What I couldn't have guessed is how much heat is transferred via the wire. When just stuck in a drilled hole through the insulation […]

[Original post on mementomori.social]

Freezer Monitoring: Because Ice Cream Is a Dish Best Served Cold [Scott Baker] wrote in to let us know about his freezer monitor. After a regrettable incident where the ice cream melted because the freezer failed [Scott] decided that what was …read more

Freezer Monitoring: Because Ice Cream Is a Dish Best Served Cold [Scott Baker] wrote in to let us know about his freezer monitor. After a regrettable incident where the ice cream melted because the...

#home #hacks #DS18B20 #grafana #prometheus #Raspberry #Pi #Zero #2 #W

Origin | Interest | Match

Freezer Monitoring: Because Ice Cream Is A Dish Best Served Cold [Scott Baker] wrote in to let us know about his freezer monitor. After a regrettable incident where the ice cream melted because the freezer failed [Scott] decided that what was called for was a monitoring and alerting system. We enjoyed reading about this hack, and we’ll give you the details in just a tick, but before we do, we wanted to mention [Scott]’s justifications for _why_ he decided to roll his own solution for this, rather than just using the bundled proprietary service from the white goods manufacturer. We’re always looking for good excuses for rolling our own systems, and [Scott]’s list is comprehensive: no closed-source, no-api cloud service required, can log with high fidelity, unlimited data retention, correlation with other data possible, control over alerting criteria, choice of alerting channels. Sounds fair enough to us! The single-board computer of choice is the Raspberry Pi Zero 2 W. As [Scott] says, it’s nice to be able to SSH into your temperature monitoring system. The sensor itself is the DS18B20. [Scott] 3D printed a simple case to hold the electronics. The other materials required are a 4.7k resistor and a power cable. The instructions for enabling the 1-wire protocol in Raspbian are documented in INSTALL.md. When it comes time for programming, [Scott’s] weapon of choice is GoLang. He uses Go to process the file system exported by the 1-wire drivers under `/sys/bus/w1/devices`. He sets the Pi Zero up as an HTTP endpoint for Prometheus to scrape. He uses a library from Sergey Yarmonov to daemonize his monitoring service. Then he configures his ancient version of Prometheus with the requisite YAML. The Prometheus configuration includes specifications of the conditions that should result in alerts being sent. Once that’s done, [Scott] configures a dashboard in Grafana. He is able to show two charts using the same timescale to correlate garage energy usage with freezer temperatures. Mission accomplished! Now that you know how to make a freezer monitor, maybe it’s time to make yourself a freezer.

Freezer Monitoring: Because Ice Cream Is a Dish Best Served Cold [Scott Baker] wrote in to let us know about his freezer monitor. After a regrettable incident where the ice cream melted because the...

#home #hacks #DS18B20 #grafana #prometheus #Raspberry #Pi #Zero #2 #W

Origin | Interest | Match

Picture of some of the test candidates used for accuracy testing

Are you looking to build your own temperature and humidity sensor? Bernhard Bablok compares eight sensors to determine which is the most accurate
www.makerspace-online.com/temperature-...
#sensor #humidity #project #tutorial #testing #BMP280 #DS18B20 #AHT20 #RaspberryPi

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11. Arduino - DS18B20 Temperatursensor


#Arduino #ArduinoBoard #ArduinoIDE #ArduinoUno #DS18B20 #Homeassistant #Mikrocontroller #OneWireBus #Temperatursensor
smarthome-assistant.info/11-arduino-d...

ESP32 - Temperatursensor DS18B20 In diesem Beitrag möchte ich dir zeigen wie du den Temperatursensor DS18B20 am ESP32 programmierst. Diesen Sensor habe ich dir bereits in diversen Beitr

In diesem Beitrag möchte ich dir zeigen wie du den Temperatursensor DS18B20 am ESP32 programmierst. #DS18B20 #ESP32 #Temperatursensor
bit.ly/3XVwluW

I created a program that collects data from multiple temperature sensors using a web browser with the Raspberry Pi's PicoW.
#RPi_Pico_W #Pico_W #micropython #AccessPoint #WebServer #DS18B20
blog.naver.com/phy2sci/2234...