Category Archives: Components

4x Half Bridge load cells

By | 3. May 2019

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… Read More »

Connecting sensors without soldering?

By | 1. February 2019

Each Raspberry Pi has 40 PINs to which sensors can be connected. This can be done simply by using connectors such as the “jumper cables”, which cost just a few cents. The sensors can be plugged into a so-called “breadboard”. A basic package can be found on Amazon 🛒 (The package just as a clue,… Read More »

Building a scale frame

By | 1. February 2019

Many beekeepers see the greatest challenge in the construction of the beehive’s weighing frame. As our picture gallery shows, there are many racks suitable for reproduction. In addition, our Facebook group also allows an exchange/trade among each other. In this article I would like to introduce the possibility to build your own scale rack. Otherwise… Read More »

LED (optional)

By | 24. November 2018

Is the HoneyPi and measuring mode or in maintenance mode? An LED light integrated in the housing can provide information about this. The light will be on as long as maintenance mode is active. An LED can be connected to the GPIO21 (PIN 40). Once the maintenance mode is active, the GPIO21 will have approximately… Read More »

Calibrating load cells

By | 31. October 2018

Different load cells can be connected to the architecture selected by us. For this reason, it is possible to store a calibration for each connected scale in the maintenance mode. The calibration consists of two values. On the one hand from the “Offset” and on the other hand from the “Scaling“. If, for example, the… Read More »

Shopping list

By | 15. August 2018

The parts list is intended for one beehive. However, further sensors can be connected flexibly. The connected sensors can then be configured in maintenance mode. Plug n’ Play and optional upgradeabilityNot all sensors need to be purchased and connected! These can be added at any time. The system also runs if, for example, only one… Read More »

Autonomous power supply at the apiary

By | 28. June 2018

Normally there is no power supply at the apiary, therefore this article is dedicated to the autonomous power supply of the Raspberry Pis (RPi). The Raspberry Pi 3 B needs 5.1V and 3A as optimal input voltage. Compared to other boards like the Arduino or the ESP8266 this is a lot. Nevertheless such a power… Read More »

A/D converter (HX711)

By | 28. June 2018

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… Read More »