A little thought that crossed my mind when I had to get up to adjust the fan speed for the 5th time, I should make something that would allow me to change the fan speed and do stuff like turn the lights on and off by using an IR remote control.
A bit of googling later, I found tons of commercially available switchboards which are pretty much plug and run.
But what's the fun in that?
A bit of googling later, I found tons of commercially available switchboards which are pretty much plug and run.
But what's the fun in that?
The Plan
The plan was to make an electronic system which would work using relays and a triac to allow a small arduino-nano controller to control the lights and the fan inside my room. Initially I planned to make 2 boards which would go one on top of the other, both sitting inside my wall.
The one at the back, I call the Hot-board which would have the triac and relays which would handle the high voltage AC part of the switchboard. The other one which would be at the front I called the Cold-board and would contain all the electronics circuitry and the buttons and indicator LEDs along with a 7 segment display which would display the current fan speed.
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| The initial plan, perfectly laid out in PowerPoint |
I think I pretty much summarized what I had in my mind in a neat diagram fit for presentation in any business meeting. But I wasn't getting to any business meetings just yet, now comes the hard part.
I identified 8 unique circuit systems which would combine to make the final product.
Cold Board:
- Switch Input Encoder
- LED Driving Demux
- 7 segment display 0-7 display
- Remote control IR sensor input read
- Relay control system (Transistor controlled)
- Transformer / Rectifier DC output
- Zero crossing indicator
- Pulsing AC chipper (Speed control)
In a series of upcoming posts I will explore all these circuits, their complications and their working and how they will all work with each other to perform the task at hand.
That's all for now!
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