Affordable IoT sensor kit using LoRaWAN

LoraWan GateWay Setup

Water level sensor kit

• 1. Cut 3 inch PVC pipe into 9.5 inch length
• 2. Cover either end of PVC pipe with end cap

• 3. Cover the other end of PVC pipe with schedule 40 adapter

• 4. Glue schedule 40 adapter onto the PVC pipe
• 5. Obtain pipe plug (that can fit in the schedule 40 adapter) and drill 37/64 inch hole into the center of plug, then use a ⅜-18 npt tap to go through the hole to create threads for next step.

• 6. Screw in the ⅜ inch npt plug into the tapped hole created from above step, make sure O ring is attached before screw in the plug
• 7. Disassemble LDDS75 sensor by removing its cover (remove the 4 screws on the cover)
• 8. Disassemble the LDDS75 top circuit board by removing the four black screws at each corner
• 9. Take note of all wires going into the circuit board that was just removed from above step
• 10. Disconnects all wires but power cables going into the circuit board.
• 11. Pull all wires connecting to the LDDS75 out of the black enclosure
• 12. Feed the same wire you just pulled out from above step into the ⅜ inch npt plug and then back into the black enclosure of the LDDS75.
• 13. Reconnect all wires back into the circuit board.
• 14. Follow video instructions to connect to sensor, make sure everything is working properly and report data to The Things Network Stack. [1]
• 15. Screw in black screws to secure the circuit board back into black enclosure.
• 16. Tightening the npt plugs for both black enclosure and pipe plug.
• 17. Reattach LDDS black enclosure top cover by screwing in the four silver screws
• 18. Add radiation shield to the water level sensor (must be done for outdoor use)

• 18.1. Disassemble entire radiation shield by removing all screws
• 18.2. Remove sensor cover (black cone in the bottom) by unscrew it from the main sensor

• 18.3. Attach one of the radiation shield plate in between the sensor cover and the sensor
• 18.4. Screw back on the sensor cover
• 18.5. Attach three screws, washers and connecting washer to the radiation plate used in two steps above
• 18.6. Obtain three radiation plates from the top part of the original shield, connect them with the mounting bracket using three long screws, connect the assembly (mounting bracket + 3 top shield plates) to the assembly you make in step above, which includes three screws + three washers and the sensor with sensor cover.

• 18.7. Using a band clamp to attach mounting bracket on the side of the schedule 40 adapter

Air humidity and temperature kit

• 1. Remove the bottom plug of radiation shield, unscrew the two screws that hold the small plastic piecein place.

• 2. Remove LSN50 V2 enclosure (Black) cover by unscrewing the four corner screws.
• 3. Obtain temperature sensor SHT31 and feed the sensor cable through the bottom plug mentioned in step 1 and also feed it through the plug on the LSN50 V2 black enclosure.
• 4. Unscrew the four black screws that secures the top circuit board inside the black enclosure, connect the SHT31 to circuit board using Red - VDD, Black - GND, Green - PB7 and Yellow - PB6.
• 5. Follow the video instructions to connect the sensor and make sure the readings are displayed correctly. You should be able to see a temperature reading and a humidity reading.
• 6. Reconnect the LSN50 V2 cover by screwing back the four corner screws. Rescrew in the plug for LSN50 V2 and bottom plug of radiation shield. Add padding through the bottom plug to hold the sensor in place inside the shield.
• 7. Secure the LSN50 V2 black enclosure to the mounting arm of the radiation shield. Make sure to secure the additional wires to the mounting arm as well.

Water temperature kit

1. Obtain a 3 inch PVC pipe, cut the pipe to an appropriate length to make sure bottom sections of the pipe will be submerged underwater. This is site dependent and may need additional measurements ahead of time for water level at the installation site.

• 2. Paint the section of the pipe that will be in water with bottom paint to prevent organisms from growing on the pipe. Wait for the paint to dry before the next step.
• 3. Drill holes towards the bottom of the PVC pipe using a hole saw attached to a drill. Patterns of the holes can vary, below is one example. The main goal for the holes is for water to freely pass through the pipe.

• 4. Obtain a temperature sensor DS18B20 with sufficient length of cable that cover the entire length of the PVC pipe. Attach some large washers towards the bottom of the sensor tip to make sure the sensor is pointing down towards the bottom of the pipe. Attach the sensor cable through one of the holes that was drilled at the bottom using zipties.
• 5. Follow video instructions below, connect the temperature sensor to a LSN50 v2 sensor.

• 6. Drill a 4 inch hole through the PVC pipe near the top, make sure the hole is 10 inch below the top of the pipe. Obtain a ¼-20*4inch hexcap screw and put it through the drilled hole. Secure the screw with a 4 inch bolt.
• 7. Place the LSN50 v2 inside the pipe above the screw that was placed in the step above.
• 8. Place a 3 inch PVC pipe cap on top of the pipe.