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Messages - IT-Solve

17
Project logs / Re: Really universal soldering controller
Quote from: minkok on
I can see also your Iron ID is 0000 ( if you use only Rcal. it should show 1919 ( for old 5.2 it is 2525 and current 0 128))
The current is 0 256 and should be 1 128 - that both are unclear for me and if someone met that let share
Is that related to firmware?

@sparkybg  Do you have any suggestions where shall I look at for this? Мерси предварително.

@Dr.smartphone I have a bunch of minkok's dual-sensing boards. If you are in Australia I can send you some.
These ones - https://github.com/GunayAnach/unisolder-notes/tree/master/Dual%20TouchSensing1.2

18
Project logs / Re: Really universal soldering controller
PIC pins seemd close or dirty resoldered them. Crystal and filtering caps seems fine. Was planning to run through Ultrasonic Cleaner before assembly. Rinsed and brushed with Alchohol and toothbrush.





managed to calibrate I think.




I am using standlone from here - UniSolder-5.2\software\front\US_Firmware.X\dist\PIC32_Standalone\production
Not sure how to check which version but, seems like I am behind the latest Sparky's master. I will pull it and reflash it.
19
Project logs / Re: Really universal soldering controller
Mouser is out of stock of TC1047AVNBTR. Is that only for the room temperature? Trying to understand how it affects iron temp offset. I will have to get it from aliexpress and takes 2 months.

Actually I just realised that I have connected the 10 Ohm Rcalib between VOUT- and ID. That may explain why measures as 0000

Resodlered now between VOUT- and SENSEA. But when rotating the knob, R is not moving. Only ADC. Also ADC /R/Room tempo flickers between two values 743/744 etc.




21
Project logs / Re: Really universal soldering controller
Apart from the MCU, the whole front board is dead cold. Seems like it's idling.



Arent these too low?
SENSEA | 0.6V
SENSEB | -0.6V

I did some test points measurements. Unless the signals between U16/U18/U11 are in millivolts. I have some triggering issues here, as most of them are 0V with 450* set on NT115 iron which uses VIN1/SENSEA terminals

Particularly IN+, IN- are 0V while CHPOL is 3.2V

Seems like something is wrong with that triggering circuit

Got some onboard measurements here - https://1drv.ms/u/s!AqUpFIbofx3HjaBO3XfqBUiOCYqwlw


22
Project logs / Re: Really universal soldering controller
Must be something with the iron temp measurement circuit to have such offset. Is that U11/U15/U17 block?
Also, the room temp sensor is 10* off, how accurate is yours, that's u4 right. Should it affect the iron readings?

This is my iron configuration for NT115

24
Project logs / Re: Really universal soldering controller
Actually when it stays on for 10mins or so and I start poking around with the multimeter to measure voltage then the screen gets gibberish.  Expected?

I have also noticed that quite of a hating up is happening at the back board. Do you experience this issue too? This is with no soldering iron connected, just the test resistor.

Seems to be ZD5/R19/R16 love triangle. I get 31.7V on VIN of U1.

12V on back board is 15V isn't that bit too much
25
Project logs / Re: Really universal soldering controller
Thanks for your efforts @minkok
I've reflashed the firmware, and cannot detect any touch mess anymore. Ran my fingers through both boards, seems stable, perhaps was a loose connection.

Did calibration again, cannot get room temp to show correctly. It's 15* above what's here now.

Measured outside of the board.
C30 - 102nF
R60 - 0.9961K
0.13Ohms probes resistance
26
Project logs / Re: Really universal soldering controller
Thanks @minkok

U4 - P1 - 3.19V
U4 - P3 - 0.89V
3.3V test points on front board- 3.19V
U1 - P8 - 3.32V

C30 - 102nF
R60 - 0.9961K
0.13Ohms probes resistance

I don't have a spare u4, will try to reprogram the pic. Does 3.19V is too low? Also, I noticed that when I touch the board there seems to be static which affects the screen and goes all glitchy until I switch OFF/ON
27
Project logs / Re: Really universal soldering controller
Managed to replace 1% Resistors with 0.1%, except these R24, R34, R51, R60 - 1k 0.1% . Which I could not source.
Just calibrated it now and I get

100* - Measured 74*   - Now is - 70*
200* - Measured 130* - Now is - 117*
300* - Measured 200* - Now is - 187*
400* - Measured 250* - Now is - 202*
450* - Measured 280* - Now is - 250*

Room temperature even in calibration screen is 10* positive ofset

This chip shortage and the whole build are really frustrating. Could it be that sensitive to those resistors? Or am I doing something wrong?

Attached are calibration screens, front and back board.

Please help in getting this running.
Invested so much in it already, I should have just got nase2




30
Project logs / Re: Really universal soldering controller
Quote from: Morpheus1979 on
Thanks for the reply @minkok...

I want to switch to the new touch sensing board design in the future... it is definitely on my to-do-list. But i may have to do some redesign to the pcb, since the space in my holder is very limited.

I found the culprit - well... kind of. I use this clone of an older JBC holder:

X

... with this Nano tool holders attached to it:

X

While i have the (not connected) T245-A handle in the main holder, i can't use the Nano tools properly. As soon as i take the connected Nano tool from its holder, most of the time my UniSolder falsly registers a tip change. After removing the (still not connected) T245-A handle from the holder, everything works fine.

It is for sure related to the old and unreliable touch sensing board design. So i'll have to replace it soon...

Hey, @Morpheus1979  Have you managed to figure out how to use those hanging iron holders with the dual touch sensing circuit?

I have nanotweezers NT115 and A115 soldering iron and was wondering how I can replicate JBC nase like station by just flipping the adapter between two irons. Or even ideally 6 pole 2 position switch to switch two irons. like this one https://www.altronics.com.au/p/s3032-6-pole-2-position-wafer-rotary-switch/
Seems like 8 Pole 4 positions also exists  O:) a 4 iron switch!  :))  - http://www.telespares.com.au/index.php?main_page=product_info&products_id=302434


@minkok is this the right way of connecting via the Hanging iron hanger? I measured N115 having green cable connection to the hanger metal bit. Can we use it with dual sensig touch board as drawn?

Connecting IDs together through the switch should not affect readings right? Otherwise, I may have to get an 7/8Pole one :D

I have drawn a diagram, feel free to edit if anyone can come up with wiring pins (Connect diagrams.net to a Google Account to edit online or Download the SVG and edit in draw.io then upload) https://drive.google.com/file/d/1O5e74VinZT_i4_qvb0m6idrmmo_4r6g5/view?usp=sharing


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