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digital_literacy:technology_resources:edison:edison_lunar_rescue [2019/08/28 12:11]
James Collins [Cardboard Models]
digital_literacy:technology_resources:edison:edison_lunar_rescue [2019/09/18 10:57] (current)
James Collins
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   * Al-foil   * Al-foil
   * Any recycled materials or toys that can be made into a obstacles   * Any recycled materials or toys that can be made into a obstacles
-  * Aligator clips 
-  * 9V battery 
-  * [[https://​www.jaycar.com.au/​led-flashing-10mm-red-diffused-50mcd/​p/​ZD1965|10mm Flashing LED (forward voltage 5V, forward current 20mA)]] 
-  * [[https://​www.jaycar.com.au/​220-ohm-1-watt-carbon-film-resistors-pack-of-2/​p/​RR2558|220 ohm 1 watt resistor]] 
  
 =====Cardboard Models===== =====Cardboard Models=====
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 The LED circuit is used to simulate power restoration at the moon base. This is achieved by placing the al-foil balls over 2 al-foil sheets to complete the wire circuit. The LED circuit is used to simulate power restoration at the moon base. This is achieved by placing the al-foil balls over 2 al-foil sheets to complete the wire circuit.
  
-A resistor is required to ensure that the LED does not burn out from the battery, or the battery does not provide too much voltage to the LED. You can use this [[http://led.linear1.org/​1led.wiz/​|resistor calculator]] to find out what resistor you require based on the LED you have and what battery you are using.+A resistor is required to ensure that the LED does not burn out from the battery, or the battery does not provide too much voltage to the LED. You can use this [[http://ledcalculator.net|resistor calculator]] to find out what resistor you require based on the LED you have and what battery you are using. 
 + 
 +As an example, you can see the following LED has a forward voltage (or voltage drop) of 5V and a forward current (or current rating) of 20mA. 
 + 
 +{{ :​digital_literacy:​technology_resources:​edison:​185b2e74-c8cd-4ae5-a534-6f4c3eee396f.jpeg?​nolink&​400 |}} 
 + 
 +Assuming we are using a 9V battery, we can use the [[http://​ledcalculator.net|resistor calculator]] to work out the resistor we need for the circuit. 
 + 
 +{{ :​digital_literacy:​technology_resources:​edison:​a268aa44-e057-4687-b147-4d52b977bb2e.jpeg?​direct&​400 |}} 
 + 
 +This calculation shows we would need a 200 Ohm 1/8 watt resistor. When shopping for resistors, make sure you get a resistor that is 200 Ohm, the wattage is the minimum required so if you cannnot find a 200 Ohm 1/8 watt resistor, a 200 Ohm 1/2 or 1 watt resistor would be fine. 
 + 
 + 
 +===Example Circuit=== 
 +To create a simple single flashing LED you will need: 
 +  * [[https://​www.jaycar.com.au/​9v-battery-alkaline-eclipse/​p/​SB2423|9V battery]] 
 +  * [[https://​www.jaycar.com.au/​9v-battery-snap-standard/​p/​PH9230|9V battery snap]] 
 +  * [[https://​www.jaycar.com.au/​standard-jumper-test-lead-kit/​p/​WC6010|Jumper test leads (or alligator leads)]] 
 +  * [[https://​www.jaycar.com.au/​led-flashing-10mm-red-diffused-50mcd/​p/​ZD1965|10mm Flashing LED (forward voltage 5V, forward current 20mA)]] 
 +  * [[https://​www.jaycar.com.au/​200-ohm-0-5-watt-metal-film-resistors-pack-of-8/​p/​RR0555|200 Ohm 1/2 Watt Resistor]] 
 + 
 +Once you have the above components, you can simply connect up the circuit as follows: 
 + 
 +<WRAP group> 
 +<WRAP column half> 
 +{{ :​digital_literacy:​technology_resources:​edison:​2a8e9445-0465-45f3-844f-f4d5c0cf3f4b.jpeg?​direct&​400 |}} 
 +</​WRAP>​ 
 +<WRAP column half> 
 +{{ :​digital_literacy:​technology_resources:​edison:​2de21111-7db0-4dbc-8238-83d3d1776415.jpeg?​direct&​400 |}} 
 +</​WRAP>​ 
 +</​WRAP>​ 
 + 
 +If you want to run multiple LEDs, you will need to wire the LEDs and resistors in parallel as per the circuit diagram below. 
 + 
 +<WRAP group> 
 +<WRAP column half> 
 +{{ :​digital_literacy:​technology_resources:​edison:​2206f2e0-ab94-4d1b-aab0-9303f26b68fd.jpeg?​direct&​400 |}} 
 +</​WRAP>​ 
 +<WRAP column half> 
 +{{ :​digital_literacy:​technology_resources:​edison:​8388fca9-d438-41df-96c0-c16e3028dc3b.jpeg?​direct&​400 |}} 
 +</​WRAP>​ 
 +</​WRAP>​ 
  
 ====Construction Guides==== ====Construction Guides====
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 For any questions in regardas to this resource, please contact the Inclusive Communities team at State Library of Queensland on ic@slq.qld.gov.au or at 07 3842 9058. For any questions in regardas to this resource, please contact the Inclusive Communities team at State Library of Queensland on ic@slq.qld.gov.au or at 07 3842 9058.
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  • digital_literacy/technology_resources/edison/edison_lunar_rescue.1566958292.txt.gz
  • Last modified: 2019/08/28 12:11
  • by James Collins