Hi guys,
I'm new here and I searched on the forum and I didn't find anwers to my questions so I decided to start a new thread.
I want to make myself a home made warmer to keep my regular size coffee hot for a long time. A couple hours would be great. I know only the basic stuff about electronic so I'll try to follow you as best as I can! And I know there is plenty of other good solution to keep a cup of coffee hot but I like a little challenge from time to time!
So here is the way I see my project: I would use a resistor as the heater that I'd drop it at the bottom of my coffee. Of course, it would need to be waterproof while keeping good heat dissipation. I'd like it to keep the coffee around 55 to 65*C (130 to 150*F).
I read that I could use a diode in the coffee that would trigger my power on and off between 55 and 65 or I could use a thermistor but i'm not exactly sure how i would have to use that last one.
I'd run wires from the heater element to a battery outside of the cup. I want to use small rechargable batteries like 3 or 4 AA or AAA or a Cellphone battery but I don't know what would be best.
It's been a couple of days since i'm trying to figure out what sort of hardware I gotta buy on websites like digikey and others but I really don't know what I need.
Maybe someone here could give me advice on the kind of setup I need to use and buy? or how I can choose the right stuff?
Thank you!
Alex
I'm new here and I searched on the forum and I didn't find anwers to my questions so I decided to start a new thread.
I want to make myself a home made warmer to keep my regular size coffee hot for a long time. A couple hours would be great. I know only the basic stuff about electronic so I'll try to follow you as best as I can! And I know there is plenty of other good solution to keep a cup of coffee hot but I like a little challenge from time to time!
So here is the way I see my project: I would use a resistor as the heater that I'd drop it at the bottom of my coffee. Of course, it would need to be waterproof while keeping good heat dissipation. I'd like it to keep the coffee around 55 to 65*C (130 to 150*F).
I read that I could use a diode in the coffee that would trigger my power on and off between 55 and 65 or I could use a thermistor but i'm not exactly sure how i would have to use that last one.
I'd run wires from the heater element to a battery outside of the cup. I want to use small rechargable batteries like 3 or 4 AA or AAA or a Cellphone battery but I don't know what would be best.
It's been a couple of days since i'm trying to figure out what sort of hardware I gotta buy on websites like digikey and others but I really don't know what I need.
Maybe someone here could give me advice on the kind of setup I need to use and buy? or how I can choose the right stuff?
Thank you!
Alex