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KH 342: IR Basics Part 2
Triggered!
Last week we showed how you could build and program a simple Arduino-powered IR code reader and use it to trigger certain events when the proper code was received.
Demo 1
- Show IR code being received
- Show Case Statement that triggers an event when IR code is received
- Show LEDs being triggered when the IR code is received
But we only triggered 5volt LEDs... what if we wanted to trigger something BIGGER?
Relays!
- A relay is a switch that is toggled electrically
- It gives us the ability to turn on and off a circuit with a different circuit
- So a 120AC circuit could toggle a 12V DC circuit
- A 5V circuit could toggle a 24V circuit
- It gives us the ability to turn on and off a circuit with a different circuit
There are several different TYPES of Relays
- Electromagnetic (the most popular)
- Optomechanical (Much like EM, but the circuits are COMPLETELY isolated from each other)
- Solid State (No moving parts. All switching is done in a semiconductor)
We're going to be using electromagnetic Relays
- In the most basic version: a switch is toggled between "on" and "off" by an electromagnetic that physically moves the switch between the two positions
8-Relay Package
https://www.amazon.com/gp/product/B01NBUDHPB/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
The important part is that we can use a 5-volt circuit to toggle a circuit up to 30v (or 120v AC)
IR0_Relays
Demo 2:
- Single Relay that is toggled by ASCII case statements
IR1_Relays
Demo 3:
- 8-Relay Board that is toggled by ASCII case statements
Now we know that we can trigger the relays with the keyboard... next up we're going to add an IR receiver and trigger them with an IR remote control.
IR2_IR_Triggered_Relays
Demo 4:
- 8-Relay Board that is toggled by IR code case statements
All Code for this episode is found at:
https://www.dropbox.com/s/20xonebuc7eh7is/KH342_IR2.zip?dl=0
Hosts: Fr. Robert Ballecer, SJ and Megan Morrone
Connect with us!
- Don't forget to check out our large library of projects at https://twit.tv/shows/know-how.
- Join our Google+ Community.
- Tweet at us at @PadreSJ and @Anelf3.
Thanks to CacheFly for the bandwidth for this show.
Sponsor:
View all episodes
By TWiTTriggered!
Last week we showed how you could build and program a simple Arduino-powered IR code reader and use it to trigger certain events when the proper code was received.
Demo 1
- Show IR code being received
- Show Case Statement that triggers an event when IR code is received
- Show LEDs being triggered when the IR code is received
But we only triggered 5volt LEDs... what if we wanted to trigger something BIGGER?
Relays!
- A relay is a switch that is toggled electrically
- It gives us the ability to turn on and off a circuit with a different circuit
- So a 120AC circuit could toggle a 12V DC circuit
- A 5V circuit could toggle a 24V circuit
- It gives us the ability to turn on and off a circuit with a different circuit
There are several different TYPES of Relays
- Electromagnetic (the most popular)
- Optomechanical (Much like EM, but the circuits are COMPLETELY isolated from each other)
- Solid State (No moving parts. All switching is done in a semiconductor)
We're going to be using electromagnetic Relays
- In the most basic version: a switch is toggled between "on" and "off" by an electromagnetic that physically moves the switch between the two positions
8-Relay Package
https://www.amazon.com/gp/product/B01NBUDHPB/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
The important part is that we can use a 5-volt circuit to toggle a circuit up to 30v (or 120v AC)
IR0_Relays
Demo 2:
- Single Relay that is toggled by ASCII case statements
IR1_Relays
Demo 3:
- 8-Relay Board that is toggled by ASCII case statements
Now we know that we can trigger the relays with the keyboard... next up we're going to add an IR receiver and trigger them with an IR remote control.
IR2_IR_Triggered_Relays
Demo 4:
- 8-Relay Board that is toggled by IR code case statements
All Code for this episode is found at:
https://www.dropbox.com/s/20xonebuc7eh7is/KH342_IR2.zip?dl=0
Hosts: Fr. Robert Ballecer, SJ and Megan Morrone
Connect with us!
- Don't forget to check out our large library of projects at https://twit.tv/shows/know-how.
- Join our Google+ Community.
- Tweet at us at @PadreSJ and @Anelf3.
Thanks to CacheFly for the bandwidth for this show.
Sponsor: