I'm looking for guidance on building an arduino-controlled heating element. I like to have a rotary encoder switch control the over heat delivered to the device.
Because heating is such a power drain, I'd like to connect the device directly to the power source, but run it through a relay that is controlled by the Arduino. I've attached the design below.
In general, I have two categories of questions:
1. Power Management
2. Heating Element Design
Power Management Questions
How can I use AC outlet and manage via Relay? Please give me the brief overview of mindset there.
What precautions should I take?
Heating Element Design
My plan is to take a nichrome rod, (or any other high resistance rod), and wrap it in nichrome coil. I'd then like to encase this rod/coil in a cover. When plugged in, The coil will heat up, thus heating the whole unit.
Is there a simpler approach? ie, connecting the rod directly to power? I could just build an encasing around that.
Is nichrome the right choice?
- Are there any pre-made materials that look like this? I need it to get red hot.