- Joined Jan 23, 2019
Sorry to hear @djsfantasi. Condolences to you and yours. Thank you for your continued help.“Dishwasher”? I missed that feature...
Recovering from the death in the family. We’ll provide a diagram soon.
I do have a moment to verbally describe what I think you need.
The first switch to the oven light is straightforward. One terminal if the switch goes to the power supply. The second is writer to the light. To prevent the “burner” LEDs from lighting unless the first light is lit, instead of wiring the switch to the power supply, wire it the the same output terminal connected to the oven light.
To use individual LEDs for the burner, they have to be wired in groups which are then wired in parallel. Using 12VDC as the supply and red LEDs with of forward voltage if 2V and current draw of 15mA, you can wire five LEDs in series with a 130Ω resistor. Note that the LED maximum current may be 20mA but it’s better to run then with a lower current. Look at the calculations:
R = (12V -5 * 2v) / 0.015A
= 2V / 0.015A
= 133 Ω
So, depending on how many LEDs you need for the burner, try to design it so the total number is a multiple of 5.
To dim the burner, use a PWM module as suggested about. You can externally mount the potentiometer to use as a switch for the burner. Connect the PWM supply to the oven light switch for the effect you said you wanted. And connect the PWM output to the LEDs.
I won't go for individual LEDs I'll use the wire, I like the look of it as it looks most like a filament, dimming would be fun to do but isn't essential. In all electric ovens I've used you turn one switch to get the "setting" of the oven, then you turn the other dial to set the temperature, as I can't dim the LEDs what can I use that will give the same feeling OR should I just make the light switch turn on both the light and LEDs and then have a "dud" dial?
I am choosing a 2 position rotary for the light switch but it doesn't matter if it's 4 as the only two functions of the dial are on and off any "differences" will just be pictures on the dial.
Dishwasher is part of the arduino project. Let me list in full what is required:
Sink with working pump
Oven that glows red (nice if it dims, no worries if not)
Everything to run from one 12V "jack strip" with one wall cable.