You can add extra sensors to the PCB or the BEEP base. You can download the pdf file with the PCB connections as shown below. The system supports up to five temperature sensors (type DS18b20), one microphone and one I2C BME280 temperature/humidity sensor with the standard firmware. The PCB has an extra microphone input and a I2C connection point where you can connect a second microphone, or add multiple I2C sensors. You can add the extra sensors described above and configure them using the Android BEEP base app or the iOS BEEP base app

Instructions to add sensors

You can add up to five temperature sensors to the BEEP base or BEEP PCB. There are two ways to connect an extra temperature sensor as described below. You also find instructions for connecting the humidity sensor.

Add temperature sensor (1) - connect additional cable(s) to the existing temperature sensor cable

  • Remove the batteries 
  • Cut the wire from the temperature sensor in two on a place where you like
    • It is recommended to make a connection on a dry place, e.g. in the top of your hive
  • Strip a 1,5 cm part of the outside mantle
  • Strip a 0.5 cm of the 3 inside mantles, you’ll see bare copper now
  • Connect the wires per colour to each other ((Black/green GND, Yellow = D0, Red = 3.3v).). You can use one the options below:
    • Cobblestone 
      • Use some watertight tape to seal the Cobblestone 
    • Soldering
      • We used Leadfree solder in all the components, it’s advised to use that as well
      • It’s best to put each solder in a heat shrink tube and put a heat shrink tube around all 3 the wires and the outside mantle

Add temperature sensor (2) - connect temperature sensor in the PCB

  • Drill a hole with a 7 mm diameter next to the existing temperature sensor hole in the bottom of the BEEP base
  • Make the hole waterproof with a rubber grommet 5 mm hole (LA5)
  • Insert the cable through the hole
  • Connect the sensor to the existing temperature sensor on the PCB (see attachment for more information on the PCB and its connection points)
Connect LoRa antenna 

Connect the antenna IPX connector to the (ANT2) IPX socket on the bottom side of the PCB (see picture on the right. The LoRa antenna is the small black single wire).

Connect load cell

Open 5 screws of the load cell screw terminal (GND, A+, A-, GND, AVdd) on the top of the PCB by turning them 6x anti-clockwise.

Insert the ends of the load cell wires into the screw terminal.

  • GND = Yellow (shrink wrapped shield cable)

  • A+ = Green

  • A- = white

  • GND = black

  • AVdd = Red

Tighten the screws of the terminal until the wires are fixed.

Add humidity sensor

You can connect an extra Bosch BME280 temperature/humidity sensor to measure temperature and humidity inside or outside the hive. The humidity sensor is not included the the standard BEEP base.

The Bosch BME280 sensor is the purple chip on the left side of the PCB. You have to solder four cables to the four connection points in the sensor (see PCB overview above) and connect the other side of the cable to the PCB, as indicated in the picture.

The measurements are most reliable when the cable is up to one meter in length. You can put the sensor in a queen cage for protection and place it in the hive. In the BEEP app you will see the data under 'Measurements'. 

Configuration in the BEEP base app

Configure the additional sensors in the BEEP base app for Android or the BEEP base app for iOS to make them visible in the BEEP app. If your measurements are not visible in the BEEP app, log out of the BEEP base app. Log in again and follow the steps. The measurements should now be visible in the BEEP app.

Note: If you want to add your own (I2C) sensors, you can write the required code in the firmware for each sensor and upload this modified firmware via Bluetooth to the BEEP base.