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added heater and light schematics
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aaronjridley committed Feb 21, 2024
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6 changes: 5 additions & 1 deletion labs/lab-6.md
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Expand Up @@ -86,7 +86,7 @@ LEDs are also useful when diagnosing software bugs without a computer, telling y
Please wire the 5V, 3.3V and battery line to their own LED with a 1K resistor on each LED.

Some notes:
- As you place sensors on your schematic, change the label on the top of the sensor. Some have a label of '*', while others are 'Temperature*'. Give them all unique names that make sense.
- **As you place sensors on your schematic, change the label on the top of the sensor. Some have a label of '*', while others are 'Temperature*'. Give them all unique names that make sense.**
- Ground all of your components using a "GND Power Port"
- Connect 5V pins together with arduino 5V pin (this will power the Arduino). The re should be **NO connection to the Vin pin of the Arduino!** You may want to make a 5V Net.

Expand All @@ -111,8 +111,12 @@ If your extra sensor uses I2C communication protocols, you must connect it to th

- For the heater, we will use a generic MOSFET, using the [wiring diagram here.](https://adam-meyer.com/arduino/images/2012/03/rfp30n06le-arduino-solenoid.png) In this diagram, the MOSFET has pins 1 - G; 2 - D; 3 - S. You can use a generic resistor to represent the heater, since it will just be soldered into place.

![Heater with MOSFET Schematic](/media/Heater_wiring.png)

- For the photo-cells, you can use generic resistors, since these will be soldered with wires, so the connection type doesn't really matter much. A photo-cell acts as a resistor, so you will be creating a voltage divider circuit, with a resistor in series with the photo-cell, with the analog line coming off the wire in-between the resistor and photo-cell.

![Photo-cells with MUX Schematic](/media/Light_sensor_mux.png)

#### Procedure: Starting Your Design and Creating A Schematic

1. Download the resources provided in the Canvas Files section for the Altium lab. There should be a folder called 'Altium Libraries' for you to download.
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