exxos blog - random goings on

[exxos]

:pullhair:

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Setting bed temperature to 60.000000 degrees Celsius.
Error:Heating failed, system stopped! Heater_ID: bed
[ERROR] Error:Heating failed, system stopped! Heater_ID: bed

echo:Heating Failed
Error:Printer halted. kill() called!
[ERROR] Error:Printer halted. kill() called!

Disconnected.

Wondering if its because I started at 28c :roll:

[exxos]

Setting the bed at 60c.. The heater comes on for a bit and hits 47c, so way off.

On the status..

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10/60 10 is what's in the file, and 60 is the set temp and 3685, then 3642 shows the sensor lowing in value.. sooo..

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{ OV( 3570 ), 54 },
 { OV( 3600 ), 52 },
 { OV( 3657 ), 51 },
 { OV( 3687 ), 48 },
 { OV( 3724 ), 46 },
 { OV( 3752 ), 43 },
 { OV( 3816 ), 38 },
 { OV(  3863), 31 },
 { OV(  3876), 29 },

3642, well 3657 51c.. close enough.. but nope, 47c not 51c... :WTF: and pronterface still showing 10c anyway.

[exxos]

A possible thing is its actually set to 10bit resolution :roll:

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 #define THERMISTOR_TABLE_ADC_RESOLUTION 10
#define THERMISTOR_TABLE_SCALE (HAL_ADC_RANGE / _BV(THERMISTOR_TABLE_ADC_RESOLUTION))
#if ENABLED(HAL_ADC_FILTERED)
  #define OVERSAMPLENR 1
#elif HAL_ADC_RESOLUTION > 10
  #define OVERSAMPLENR (20 - HAL_ADC_RESOLUTION)
#else
  #define OVERSAMPLENR 16
#endif
#define MAX_RAW_THERMISTOR_VALUE (HAL_ADC_RANGE * (OVERSAMPLENR) - 1) 

So 10bits for 3000+ values falls a bit short... Well 2 bits :lol: :roll:

[exxos]

Yep that was it. 12bits and now things are working as expected :dualthumbup:

43.16 / 43.00 and 43 on the bed :D

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Now to see if any tables will work with my extruder..

[exxos]

Having noticed the stock is running low on STE DUALTOS boards. I was considering getting the batch made up of these boards again..

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But later on forgot that some years ago I did this board..

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I think they were basically discontinued because the UBE circuit never was reliable and I did not have the time to solder the SMT sockets.

Though I am thinking of just removing the now-defunct UBE part and is producing those smaller more compact boards with the SMT socket. I'm hoping they will be much less outlay for me to get them into production.

[exxos]

Revamp done.

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[sporniket]

That's compact indeed.

[exxos]

I'm still constantly chugging away in the background working on store items. For example today I am testing CPU's and DRAM. yesterday I was mostly working on ROM's.

A lot of items in my store are going out of stock. Basically because I am yet to invent the 5,000 hour day yet. But a lot of projects are being transferred over to the company which built the H5 motherboards for PCB and assembly. There will be a bit of a crunch when all this stuff turns up at once. So maybe sporadically quiet but working hard in the background to keep the items flowing in my store for people.

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EDIT:

Looks like some projects starting to come into fruition

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[exxos]

STFM DUALTOS 2022 remix.

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[Badwolf]

I saw from your stock thread that you've started doing the naked STE dual ROM boards. At £6, that's an absolute steal and I shall be investing for my next order. Many thanks.

BW