Tag Archives: sensor

4x Half Bridge load cells

This article shows the wiring of cheaper “half bridge load cells” (YZC-161E). Such half bridge weight sensors are available on Ebay partly even together with a HX711 for only 9€. On Amazon they cost about 13€ 🛒 Quality At constant temperatures, these sensors work okay, but these cheap sensors show a so-called temperature drift. This means that the… Read More »

LED (optional)

Is the HoneyPi and measuring mode or in maintenance mode? An LED light integrated in the housing can provide information about this. The light signals when switching between maintenance and measurement. The pre-installed green LED on the Raspberry Pi indicates the following: Function LED maintenance mode (“HoneyPi”-WiFi avaiable) 💡 lights up measuring mode ⚫ does not light up… Read More »

A/D converter (HX711)

An A/D converter is required for the weight sensors (load cells). Unlike other boards, such as the Arduino or the ESP32, the Raspberry Pi has no integrated A/D converter. An A/D converter converts the analog signal into digital values. Therefore we need this 3 Euro component for the Raspberry Pi. Number of load cells per Raspberry Pi The… Read More »

Breeding chamber temperature sensor (DS18b20)

The DS18B20 or DS18S20 is used as the outdoor temperature sensor. These temperature sensors measure the temperature quite accurately and can be placed inside the hive with a cable. The DS18B20 differs from the DS18S20 in that it is already equipped with a long waterproof cable. For simplicity’s sake we use the DS18B20 directly and invest the small… Read More »

Load cells

Good load cells can also be taken from personal scales or kitchen scales. One example is the kitchen scale “IDEENWELT digitale Küchenwaage” from Rossmann, which has a capacity of only 5kg and therefore too small. A bee colony should be able to measure a range between 50-150kg (depending on the weight of the hive). The article Rebuild platform… Read More »