Changes

The electrical control unit is a wireless communication system that monitors the battery voltage and broadcasts other information. Please refer to this the [GitHub Repository"WoodlandHarvestControlSystem"](https://github.com/LSanten/WoodlandHarvestControlSystem) for the code for all Arduinos.The over-the-air communication works on the LoRa system at 915 Mhz.</br>

If you feel lost regarding working with any sensors or boards used in the system, check Useful Guides section at the bottom of this page.</br>__Feel free to change the code on the Arduinos and platforms. Visitors and students can get editing access to the repository from Leon Santen or Odalys Benitez.__ #LoRa Network On the Arduinos that are integrated into the system, we use the [Dragino LoRa shield](https://wiki.dragino.com/index.php?title=Lora_Shield). In the image below, you can see how the pins on the Dragino LoRa shield are assigned. This is useful as not all pins on the shield are useable. This is especially important on Arduino Unos that don't have as many pins as the Arduino Megas.</br>[[File:Lora board.JPG|500px]]</br>_The Dragino LoRa shield. Blue-boxed pins are not used by the shield and are free to be used._ ## Nodes The following nodes are curently in use: ### master-arduino The master Arduino measures the battery voltage with the [Adafruit INA260](https://www.adafruit.com/product/4226?gclid=Cj0KCQiA4feBBhC9ARIsABp_nbUfI0ajLIOyZSA2bku_JZfo73gYy_W1wFGoZthBykCbWl1sPe3xmiYaAnboEALw_wcB) and broadcasts information wirelessly to the other Arduinos. The wireless system uses the [[LoRa research|LoRa protocol]] to communicate at 915 Mhz. For detailed information on what LoRa is and how it works, please refer to the [[LoRa research]] page. The diagram for states and communication codes is on [Whimsical](https://whimsical.com/rf-states-and-communication-codes-TEZgio2TPLtG5tm47541Hq). The prior link redirects you to the diagram. Purpose:</br>- Sense and broadcast battery voltage Data transmission:</br>- _float_ of battery voltage  ### client_arduino_responsive-light[[File:GlowingBucket.jpeg|250px]]</br>_The glowing crystal indicates the batterie's charge status._</br> Purpose:</br>- Receive battery voltage and change colors to indicate battery status Data transmission:</br>- NA #### Color legend - >= 27 V | Violet- between 25 and 27 V | __Green__- between 24.3 and 25 V | __Orange__- < 24.3 V | __Red__  # Repository Sectionssections - coding comments _In this section, code-specific comments and tips can be written down for future collaboration if comments in the code don't feel appropriate._

## backporchclient_arduino_responsive-arduinolightThis unit receives the battery voltage from the master Arduino in the mudroom. Based on the voltage, the LED crystal shines in different colors.

[[File:Porch-anemometer.jpg|border|thumb|Anemometer data logger prototype on porch]]We are using a Vortex wind sensor. One revolution per second equals 2.5 mph. Since our anemometer has a relay (a mechanical switch), it creates a _switch bounce_. Therefore, we need a debounce circuit.</br>[[File:WindSpeed Porch Oct14.jpg|border|thumb500px]]

- We are currently supplying power to the Arduinos via USB. If we used DC use efficient Buck converters from the batteries to the Arduinos, we might save some electricity.- install a gateway for a LoRa WAN network # Helpful tools and guides

# Useful # Tools The [falstad online circuit simulator](https://www.falstad.com/circuit/circuitjs.html) is great to quickly test a circuit, check its output voltage or behavior. ## Guidesand tips