Changes between Version 8 and Version 9 of ControlSystems/Electrical/Training/Arduino/Lesson2

Timestamp:

Sep 27, 2015, 3:06:22 PM (10 years ago)

Author:

David Albert

Comment:

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ControlSystems/Electrical/Training/Arduino/Lesson2

@@ -4 +4 @@
 Robots run on electricity.  Your mini-bot is small, light, and uses penlight batteries - it's safe; however the FIRST robots you will build later this year weigh up to a couple of hundred pounds, use powerful motors, solenoids, and pneumatics, and run on batteries with enough energy to seriously hurt you.  So you need to learn the basics of electricity and how to control it because:
 1. It's interesting and fun 
-2. Ignorance stinks - so much of our modern world depends on electricity, everyone should have a basic understanding of what it is and how it works
-3. Safety: everyone who works on or with the robot must understand how to stay safe and keep the robot from hurting itself or others.
+2. Ignorance is **not** bliss: so much of our modern world depends on electricity, everyone should have a basic understanding of what it is and how it works
+3. Safety: everyone who works on or with the FIRST robot must understand how to stay safe and keep the robot from hurting itself or others.
 
 == Objectives == 
 By the end of the lesson you should understand:
-* Electrical power
-   * Units of measure: Volts, Amperes, Watts, Joules, Ah
+* Electricity
+   * [https://learn.sparkfun.com/tutorials/what-is-electricity What is electricity]
+   * Units of measure: Volts, Amperes, Watts, Joules, Ah, KWh
+   * The [http://hyperphysics.phy-astr.gsu.edu/hbase/electric/watcir.html water analogy]
+   * Who's who (literally): [https://en.wikipedia.org/wiki/Alessandro_Volta Volta], [https://en.wikipedia.org/wiki/Andr%C3%A9-Marie_Amp%C3%A8re Ampere], [https://en.wikipedia.org/wiki/James_Watt Watt], [https://en.wikipedia.org/wiki/James_Prescott_Joule Joule], [https://en.wikipedia.org/wiki/Georg_Ohm Ohm]
 * Batteries
-   * Types of batteries
-   * Battery characteristics (voltage, capacity, instantaneous current)
-   * Polarity
-   * Using a multimeter to measure voltage and current
+   * What is a battery
+   * [http://mechanicalmania.blogspot.com/2011/07/types-of-battery.html Primary vs. secondary]
+       * FIRST bots use sealed [https://en.wikipedia.org/wiki/Lead%E2%80%93acid_battery lead-acid] batteries (1800s technology!)
+       * Mini-bots use primary alkaline batteries (developed 1899-1901)
+   * Voltage:
+       * Nominal voltage (alkaline=1v5/cell, SLA=2v15/cell)
+       * [http://www.zbattery.com/Connecting-Batteries-in-Series-or-Parallel Series connected] cells multiply the voltage
+       * Real world: discharge curve, temperature effects
+       * Datasheets: [http://data.energizer.com/PDFs/E91.pdf alkaline] [http://www.power-sonic.com/images/powersonic/technical/1277751263_20100627-TechManual-Lo.pdf SLA]
+   * Current:
+       * [http://data.energizer.com/PDFs/BatteryIR.pdf Internal resistance]
+       * What are [http://www.optimabatteries.com/en-us/experience/power-source/what-does-cold-cranking-amps-cca-mean/ Cold Cranking Amps] anyway?
+   * Capacity:
+       * Amp-hours
+       * [http://batteryuniversity.com/learn/article/the_battery_and_the_digital_load discharge rate matters!]
+       * [http://batteryuniversity.com/learn/article/will_secondary_batteries_replace_primaries ratings games])
+   * [http://web.mit.edu/evt/summary_battery_specifications.pdf specifications cheat sheet]
+   * Energy density
+   * Self discharge
+   * [https://learn.sparkfun.com/tutorials/how-to-use-a-multimeter-retired-tagged-by-internet-as-malware Using a multimeter] to measure voltage and current
 * !Conductors/Circuits
    * What is a conductor