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Blog Bees Monitor With Predators Repellent # 6 - Adding The Water Sprayer System
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  • Author Author: guillengap
  • Date Created: 16 Apr 2023 9:18 PM Date Created
  • Views 723 views
  • Likes 7 likes
  • Comments 2 comments
  • save the bees
  • savethebeesch
  • nicla vision
  • lora
  • mkr1310
  • arduino
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Bees Monitor With Predators Repellent # 6 - Adding The Water Sprayer System

guillengap
guillengap
16 Apr 2023
Bees Monitor With Predators Repellent # 6 - Adding The Water Sprayer System

Table of Contents

  • Introduction
  • Getting Started
  • Edge Impulse
  • Improving Edge Impulse Model
  • Testing The Machine Learning Model With OpenMV
  • Adding The Water Sprayer System
  • Testing The Water Sprayer System
  • IoT Ambient Monitoring System | Part1
  • IoT Ambient Monitoring System | Part2
  • Summary

**********************************************************************************************************************

In this section I will show you how to assemble the water sprayer system that I have designed for this project.

Schematic Diagram

First of all, we need to know how this system will be connected and its basic operation. Below I show you the schematic diagram:

image

How does it work?

  1. If the Nicla Vision board detects a bee, then it turns ON the green LED and the PG1 pin for 1.5 seconds;
  2. If the MKR WAN 1310 board detects a pulse through pin 4, then it activates the bee counter, and prints the number of bees through the serial port;
  3. If the Nicla Vision board detects a wasp, then it turns ON the red LED and the PG12 pin for 1.5 seconds;
  4. If the MKR WAN 1310 board detects a pulse on pin 5, then it activates the servo motor and the wasp counter, finally prints the number of wasps through the serial port;
  5. When the servo motor is activated, it rotates from 105 to 170 degrees with the gripper to press the water spray bottle for 1.5 seconds, then returns to the initial position of 105 degrees.

It's also necessary to know the pinout of the Nicla Vision and MKR WAN 1310 boards that I will use in my prototype.

Nicla Vision Pinout

image

MKR WAN 1310 Pinout

image

Assembling the device

Below I show you the gripper that we will use, as you can see it has a MG995 servo, which has a stall torque from 8.5 kgf·cm (4.8 V ) to 10 kgf·cm (6 V) . Here the datasheet: https://www.electronicoscaldas.com/datasheet/MG995_Tower-Pro.pdf

image

The handheld water sprayer is a generic 250 ml.

image

I have mounted the devices on an old CD case, which is ideal since the water spray bottle doesn't stop the movement of the gripper when it works.

image

But if you have enough time and filament to 3D print similar boxes, here are the STL files for you to modify and print. Below I show you module 1, which is an empty box on the inside and with the holes to insert the cables you need to connect a battery for example.

image

Part_1.stl

Finally module 2. We can use this piece for the base of module 1 or to assemble the Nicla Vision. In my case, I fixed it using two rubber bands to hold the USB cable since the Nicla Vsion lacks holes to fix it with screws.

image

5315.Part_2.stl

Here I show you a zoom of the handheld water sprayer mounted on the gripper using a single nylon strap.

image

Now the Nicla Vision mounted in module 2, by means of the USB cable fixed with a couple of rubber bands.

image

Finally the MKR WAN 1310 mounted on the opposite side of the Vision nicla and on module 2.

image

Below I show you an image of the frontal view after wiring the Nicla Vision and MKR 1310 boards.

image

And below I show you an image of the back view.

image

Conclusion:

  1. Here we have seen how I designed and assembled the water sprayer system, as well as its basic functions. If you want to repeat the experience, I advise you to first have all the necessary material before starting to build the prototype, since some of the things will surely be improvised, as was my case.
  2. My idea was that the modules were practical and economical. Also I tried to fix and secure the hardware so that it doesn't get damaged. Surely in the future I will make changes and this served me as an experience.
  3. In the next chapter we will see the programming of the boards and his explanation of how I solved some software problems. I will also do a simple test of my invention.

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  • guillengap
    guillengap over 2 years ago in reply to dougw

    You're right! I experimented with two gripper jaws and I liked these one because they hold more strongly (made of aluminum alloy), the others open the gripper more but are made of plastic and have nowhere to insert a strap.

    Kind regards

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  • dougw
    dougw over 2 years ago

    Nice looking gripper jaws.

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