electronics suggestions or limitations April 13, 2014 04:14PM |
Registered: 10 years ago Posts: 5 |
Re: electronics suggestions or limitations April 14, 2014 03:58PM |
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Re: electronics suggestions or limitations April 15, 2014 08:24AM |
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Re: electronics suggestions or limitations April 15, 2014 06:23PM |
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Re: electronics suggestions or limitations April 15, 2014 08:48PM |
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Re: electronics suggestions or limitations April 16, 2014 09:34AM |
Registered: 10 years ago Posts: 869 |
How hot the hot end can get is not a function of the board's capabilities. The board is just interpreting what the thermistor is telling it and either turning on or off the heater. Each thermistor that gets configured has a lookup table that specifies that associates a range of resistance values with the corresponding temperature for that resistance. Want to have a hot end that can go to 900 degrees C? Just use a thermistor that's good to that temperature and create a table for it's values. Almost all thermistors that are readily available don't go that high though. Most are good for somewhere between 200-300 degrees C.Quote
Natas70
My question was basically asking what brands of boards are able to handle these hotends. It would be great if a Ramps board can handle the requirements to heat a hotend to 350 +
Re: electronics suggestions or limitations April 19, 2014 02:06AM |
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Re: electronics suggestions or limitations April 19, 2014 07:11AM |
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Re: electronics suggestions or limitations April 21, 2014 09:43AM |
Registered: 10 years ago Posts: 869 |
Using just the standard designed RAMPS board you're limited at 11 amps for the heated bed and 5 amps for everything else. The heated bed can be ran at 24v which either divides the needed current in half for the same power, or doubles the available power at the same current enabling a larger area to be heated. Beyond typical needs, the output could be used to control a relay (solid state or even just mechanical) to switch even higher current or mains voltage.Quote
Natas70
So there is no amp load limitation? I have seen people talk about the Ramps board cannot handle a larger heated bed than about a 8". Is this a totally different situation, to me it seems to be the same condition, thermistor and heating element of some sort. and not necessarily the ramps board itself but the arduino/ramps combination.
Re: electronics suggestions or limitations April 21, 2014 09:38PM |
Registered: 10 years ago Posts: 5 |