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Blog# 6 EAS - System Designs -- Block diagram

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BLOG# 6 -Edible Algae System - (Growing Spirulina in space)

System Designs -- Block diagram

This is my 6th blog post in a series of blog post for the Design Challenge 1 Meter of Pi

Updated version 1.3

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Blog# 5 EAS - Research Temperature Sensor - DS18B20Blog# 7 EAS -  System Designs -- Software Design

 

INTRODUCTION

  • In this blog, I wanted to map out the relationships in the System between the:
    • Raspberry PI
    • PICO HAT
    • Automation Hat Mini
      • Outputs from the hat
    • Enviro colimit Hat
      • Sensors, on the Hat
  • Water Temperature sensor probes.
  • WIFI
  • DB server,
    • Saving data to Mongo DB Atlas in the Cloud
    • Monitoring data over a timespan using Atlas Charts
  • I wanted to have one Pi connected to both hats and the Wiring image below, shows that. It's not pretty, but it works
  • Basically is a splitter breadboard for all the GPIO pins shared by both hats and there is a direct connection from the pins to the hats where they don't share.
  • The next Breadboard splitter, is used for the Water Temperature sensor. circuit and is connected to The main Splitter
  • The last Breadboard Splitter circuit, is used to implement the Three output switch's , to control the room light water pump and water heater.

 

SYSTEM BLOCK DIAGRAM

image

 

Conclusion and summary

  • This blog has summarized a high level design on how the PI, Hats, and other electrical components will be interconnected.
  • The implementation of this first pass has changed a bit:
    • the Hats are wired to one PI and the DB Server and Windows server, replaced with MongoDB Atlas in the cloud.
      • The Data is sent to Atlas using the Python Driver (pymongo),.over a wireless connection
      • The Data is monitored using Atlas Charts.
    • The PH sensor will not be implemented in this phase.
  • I plan on implementing  this design in a phase II implementation. I want this to be a self contained system without wireless connectivity. With a MongoDB server runing On another PI.

 

<<<   PREVIOUS BLOG

NEXT  BLOG  >>>
Blog# 5 EAS - Research Temperature Sensor - DS18B20

Blog# 7 System Designs -- Software Design

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