I have lots of software experience but almost no hardware experience, and I’ve decided to try my first Arduino project. I’ve done some upfront research on my own, but I still need some help
What I’m trying to do:
I currently have a dimmer switch for room lighting that uses an RF remote. I’d like to control it with a universal infrared remote. I’ve attached a very rough picture of my idea in the file diagram.png
What I have already:
- Arduino Uno rev 3
- Small breadboard and jumper wires
- IR Receiver Diode TSOP382 (IR Receiver Diode - TSOP38238 - SEN-10266 - SparkFun Electronics)
- Lutron Pico wireless control using RF, powered by 3V battery (http://www.amazon.com/gp/product/B003U8Y9W4/)
- Universal infrared remote
- Lutron Maestro dimmer
- A digital multimeter
Other things I think I need:
- Temperature-controlled soldering iron
- 4 Diodes
What I have done:
I found an article online that seems to apply to my situation:
I’ve carefully removed the circuit board inside the Pico remote from its case (see attachment pico.png), and I found some contacts under the five buttons. I assume that if I bridge these contacts, it will be like pressing the buttons.
How do I determine whether a button on the Pico is pulled down to GND or up to +3V? If I need to use the multimeter, what mode should be used, and what readings should I expect to see?
Assuming the button is pulled down to ground when closed (which I’m hoping), how do I safely determine which contacts (outer 4 or single inner) connect to ground, and which ones to an IC pin? Also, what type of diodes should I use? I’ve encountered several terms I don’t understand (“rectifier”, “switching”, “zener”, and “silicon”) and despite reading about them I’m still not sure which ones are appropriate.