When HN users recommended it
1 HN user recommended this between 2020 and 2021, in 2 comments.
20072026
Each tall tick is one HN user's first recommendation. A short tick is the same user again. Click a tick to jump to the comment.
1 HN user recommended this between 2020 and 2021, in 2 comments.
Each tall tick is one HN user's first recommendation. A short tick is the same user again. Click a tick to jump to the comment.
If you can live with just minimum, current, and maximum temperature instead of a detailed log, this works well [1].
[1] https://www.amazon.com/gp/product/B004QJVU78/
I too have an RPi logging fridge/freezer temperature, but wirelessly.
I use this wireless fridge/freezer thermometer [1]. The units that go in the fridge and freezer communicate with the display unit via 433 MHz RF.
I have an RTL-SDR [2] on the RPi.
I run rtl_433 [3] on the RPi. rtl_433 understands the protocols of a large number of wireless sensors, including the ones used by those AcuRite sensors.
I've got it configured to output whatever sensor data it decodes in JSON format to a file, and a script that periodically parses new entries from that file and records in an sqlite DB the readings from the sensors I'm interested in.
Rtl_433 is a fun program. It recognizes and decodes the transmissions of a lot of things. It is getting several neighbor's wireless thermometers and humidity sensors, a soil moisture sensor, several different car tire pressure sensors, a smoke detector, some kind of keypad (wireless lock?), a car remote, some kind of energy monitor, a rain gauge, and a wind speed/direction sensor.
[1] https://www.amazon.com/gp/product/B004QJVU78/
[2] https://www.amazon.com/gp/product/B009U7WZCA/
[3] https://github.com/merbanan/rtl_433