TeaCup on Arduino Uno

calogerom

TeaCup on Arduino Uno
June 19, 2015 11:39AM

Registered: 9 years ago
Posts: 83

Hello everybody!
I downloaded Teacup firmware but when I should create config.h file with configtool program, I don't find the file to choose Arduino Uno as board. Why?

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madmike8

Re: TeaCup on Arduino Uno
June 19, 2015 04:27PM

Registered: 10 years ago
Posts: 814

I'm working towards using an Uno with a CNC shield V3.

Here's where I'm at right now. Still untested.

you can download it and use it as a bases for yours. just copy it to the config folder.

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Attachments:
open | download - board.CNC_Shield_V3_UNO.h (8.3 KB)

calogerom

Re: TeaCup on Arduino Uno
June 19, 2015 05:06PM

Registered: 9 years ago
Posts: 83

Thank you very much winking smiley

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calogerom

Re: TeaCup on Arduino Uno
June 20, 2015 05:03AM

Registered: 9 years ago
Posts: 83

Now I have another problem: I'm using Arduino Nano because it has two analog input more (AIO6 and AIO7). I connected two thermistor (one for the bed and one for the extruder) to these pins. But Repetier show me 0°C. Why?

Edited 1 time(s). Last edit at 06/20/2015 05:05AM by calogerom.

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o_lampe

Re: TeaCup on Arduino Uno
June 20, 2015 05:17AM

Registered: 8 years ago
Posts: 5,232

Quote
calogerom
Now I have another problem: I'm using Arduino Nano because it has two analog input more (AIO6 and AIO7). I connected two thermistor (one for the bed and one for the extruder) to these pins. But Repetier show me 0°C. Why?

No pullup resistor ?
4.7k from AIOx to Aref building a voltage divider with the Thermistor.
-Olaf

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calogerom

Re: TeaCup on Arduino Uno
June 20, 2015 05:26AM

Registered: 9 years ago
Posts: 83

On the board there is already pullup resistor (4,7kohm).

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Traumflug

Re: TeaCup on Arduino Uno
June 20, 2015 05:44AM

Registered: 13 years ago
Posts: 7,616

Wether the electrical part of a temp sensor works can be measured easily. At room temperature voltage on the pin should be slightly below supply voltage, so 4.80 volts or something. With raising temperature, this voltage should go down. Warming with fingers is sufficient for another 0.2 V drop. Higher temperatures can be reached with a candle or a lighter, but be careful to not overheat it.

Generation 7 Electronics	Teacup Firmware	RepRap DIY

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calogerom

Re: TeaCup on Arduino Uno
June 20, 2015 05:59AM

Registered: 9 years ago
Posts: 83

I tried to measure voltage with a multimeter and the values match those that you wrote. So I tried to use another analog pin to read the tempetature but it is always 0°C. I think there is some problem in the software. What do you think?

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Traumflug

Re: TeaCup on Arduino Uno
June 20, 2015 06:08AM

Registered: 13 years ago
Posts: 7,616

Quote
madmike8
I'm working towards using an Uno with a CNC shield V3.

Here's where I'm at right now. Still untested.

you can download it and use it as a bases for yours. just copy it to the config folder.

Thanks. I think it's about time to add one or two of these Nano/Uno based setups to the distribution, so I looked into it. One thing I found is, you name the extruder "hotend", which requires adding a P0 to each M104 and gives a slightly different answer text on M105. Renaming this to "extruder" would fix this. "extruder", "bed" and "fan" are names with a special meaning, see the tooltip when hovering over the ~~"add sensor"~~ "Add" button on the heater tab.

Edited 1 time(s). Last edit at 06/20/2015 06:12AM by Traumflug.

Generation 7 Electronics	Teacup Firmware	RepRap DIY

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calogerom

Re: TeaCup on Arduino Uno
June 20, 2015 06:15AM

Registered: 9 years ago
Posts: 83

I named the thermirstor of extruder "extruder" and the thermistor of bed "bed". But Repetier show me always 0°C. Moreover Repetier show me only the thermistor of extruder although there is connected the thermistor of bed.

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calogerom

Re: TeaCup on Arduino Uno
June 20, 2015 06:19AM

Registered: 9 years ago
Posts: 83

In the attachments my board.h file

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Attachments:
open | download - board.3dprinter.h (8.5 KB)

Traumflug

Re: TeaCup on Arduino Uno
June 20, 2015 06:27AM

Registered: 13 years ago
Posts: 7,616

What does the answer read if you send a M105 manually? Repetier is known to be feature-rich, but also to do funny things at times. At least for debugging, Pronterface is better.

Generation 7 Electronics	Teacup Firmware	RepRap DIY

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calogerom

Re: TeaCup on Arduino Uno
June 20, 2015 06:30AM

Registered: 9 years ago
Posts: 83

The answer if I send a M105 manuallt is only "ok"

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Traumflug

Re: TeaCup on Arduino Uno
June 20, 2015 06:30AM

Registered: 13 years ago
Posts: 7,616

I'm looking for a schematics of this CNC shield, to find out which pins are available for heaters and temp sensors. Does such a thing exist?

Generation 7 Electronics	Teacup Firmware	RepRap DIY

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Traumflug

Re: TeaCup on Arduino Uno
June 20, 2015 06:32AM

Registered: 13 years ago
Posts: 7,616

Quote
calogerom
The answer if I send a M105 manuallt is only "ok"

That's obviously not enough :-)

It should read something like

ok T:377.0/0.0 B:377.0/0.0

with temp sensor disconnected, other numbers with it connected.

Generation 7 Electronics	Teacup Firmware	RepRap DIY

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calogerom

Re: TeaCup on Arduino Uno
June 20, 2015 06:38AM

Registered: 9 years ago
Posts: 83

Quote
Traumflug
I'm looking for a schematics of this CNC shield, to find out which pins are available for heaters and temp sensors. Does such a thing exist?

The board was designed by me. In attachments there is the electrical schematic.

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Attachments:
open | download - PCB - Multisim 1.pdf (59.1 KB)

calogerom

Re: TeaCup on Arduino Uno
June 20, 2015 06:46AM

Registered: 9 years ago
Posts: 83

Quote

That's obviously not enough :-)

It should read something like
ok T:377.0/0.0 B:377.0/0.0
with temp sensor disconnected, other numbers with it connected.

I tried to upload a simple sketch to test the thermistor. With this sketch I read the correct voltage on the thermistor. So, I think the problem is in Teacup firmware

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Traumflug

Re: TeaCup on Arduino Uno
June 20, 2015 06:54AM

Registered: 13 years ago
Posts: 7,616

Currenty I'm out of ideas, except for some printf()-type debugging. Temperatures are printed in temp_print() in temp.c and Teacup's flavour of printf() is sersendf_P() (as you can see there). First I'd check wether this function is reached at all, by inserting an unconditional sersendf_P(), then looking what the variable index reads, and so on. Can't test this myself, I have no such hardware, still I'm very interested to find a possible bug, of course.

Generation 7 Electronics	Teacup Firmware	RepRap DIY

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calogerom

Re: TeaCup on Arduino Uno
June 20, 2015 07:05AM

Registered: 9 years ago
Posts: 83

Thank you for the time you are losing smiling smiley

I tried to modify temp_print function from:

void temp_print(temp_sensor_t index) {
	if (index == TEMP_SENSOR_none) { // standard behaviour
		#ifdef HEATER_EXTRUDER
			sersendf_P(PSTR("T:"));
      single_temp_print(TEMP_SENSOR_extruder);
		#endif
		#ifdef HEATER_BED
			sersendf_P(PSTR(" B:"));
      single_temp_print(TEMP_SENSOR_bed);
		#endif
	}
	else {
		if (index >= NUM_TEMP_SENSORS)
			return;
		sersendf_P(PSTR("T[%su]:"), index);
		single_temp_print(index);
	}
}

to:

void temp_print(temp_sensor_t index) {
	sersendf_P(PSTR("T:"));
	single_temp_print(TEMP_SENSOR_extruder);
	sersendf_P(PSTR(" B:"));
	single_temp_print(TEMP_SENSOR_bed);
}

But the answer is always "ok". So the problem is before of this funcion.

Edited 1 time(s). Last edit at 06/20/2015 07:05AM by calogerom.

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Traumflug

Re: TeaCup on Arduino Uno
June 20, 2015 08:37AM

Registered: 13 years ago
Posts: 7,616

The function is called from gcode_process.c, line 452..472. Not much code there, it almost looks as if the "M105" its self isn't recognized.

Generation 7 Electronics	Teacup Firmware	RepRap DIY

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Traumflug

Re: TeaCup on Arduino Uno
June 20, 2015 08:58AM

Registered: 13 years ago
Posts: 7,616

There's also this commit: [github.com] , which tries to deal with some of the Repetier assumptions. Just a wild guess.

Generation 7 Electronics	Teacup Firmware	RepRap DIY

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calogerom

Re: TeaCup on Arduino Uno
June 20, 2015 09:47AM

Registered: 9 years ago
Posts: 83

Quote
Traumflug
The function is called from gcode_process.c, line 452..472. Not much code there, it almost looks as if the "M105" its self isn't recognized.

I tried to print something where the function is called but in log there is no response

Quote
Traumflug
There's also this commit: [github.com] , which tries to deal with some of the Repetier assumptions. Just a wild guess.

I changed code like that above, but I don't receive any "ok" in this way.

Edited 1 time(s). Last edit at 06/20/2015 09:49AM by calogerom.

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madmike8

Re: TeaCup on Arduino Uno
June 20, 2015 10:50AM

Registered: 10 years ago
Posts: 814

Quote
Traumflug

Quote
madmike8
I'm working towards using an Uno with a CNC shield V3.

Here's where I'm at right now. Still untested.

you can download it and use it as a bases for yours. just copy it to the config folder.

Thanks. I think it's about time to add one or two of these Nano/Uno based setups to the distribution, so I looked into it. One thing I found is, you name the extruder "hotend", which requires adding a P0 to each M104 and gives a slightly different answer text on M105. Renaming this to "extruder" would fix this. "extruder", "bed" and "fan" are names with a special meaning, see the tooltip when hovering over the ~~"add sensor"~~ "Add" button on the heater tab.

Hey, Thanks! I'll make the changes on my board file. I didn't get a chance to test last night... It'll happen!

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calogerom

Re: TeaCup on Arduino Uno
June 23, 2015 10:25AM

Registered: 9 years ago
Posts: 83

I read in Marlin (configuration.h) that it is possible set Arduino Duemilanove (similar to Arduino Nano) as motherboard. But when I tried to upload sketch in to Arduino Nano, the size of the program is too big. Why is there this motherboard in the options if it is impossible upload sketch?

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Wurstnase

Re: TeaCup on Arduino Uno
June 23, 2015 04:00PM

Registered: 9 years ago
Posts: 4,977

Disable features until it can fit.

Triffid Hunter's Calibration Guide

--> X <-- Drill for new Monitor

Most important Gcode.

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calogerom

Re: TeaCup on Arduino Uno
June 23, 2015 07:01PM

Registered: 9 years ago
Posts: 83

Which features?

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Wurstnase

Re: TeaCup on Arduino Uno
June 24, 2015 12:23AM

Registered: 9 years ago
Posts: 4,977

Anything which is more than movement and hotend. But anyway, Teacup is smaller and I would go with it.

Edited 1 time(s). Last edit at 06/24/2015 12:24AM by Wurstnase.

Triffid Hunter's Calibration Guide

--> X <-- Drill for new Monitor

Most important Gcode.

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