Skip to main content ↑ ↓
Topic: Really universal soldering controller (Read 1047168 times) previous topic - next topic

Re: Really universal soldering controller

Reply #1065 –
[quote author="puzzle"]
@ScotY808:

There ara pictures on page 63, it might be helpfull for the orientation of the components. If you need larger pictures I can send them to you!
C21, R21 are connected - I taught I bridged them too but found in the schematics it is meant to be that way.
R19 and R20 -horizontal

Greetings[/quote]

Thank you, puzzle...this is a relief!  I thought I damaged the PCB.

Thank you also for your pictures. I remember seeing them but could not find them in this huge thread. Now I have saved them on my computer so I can always see.

As I have said before, I am a newbie to this kind of thing. Before I thought the ICs and chips would be hardest to solder but I find the passive components are much harder!  They are so small and move around a lot. Does anyone know an inexpensive solution for magnification?  I use a cheap eye loupe but I cannot use it and solder at the same time.

Re: Really universal soldering controller

Reply #1066 –
@ScotY808:

I'm glad I can help.
I used a jewelers loupe but only to check the solder joints. To me, it was more helpful to watch several videos on SMD soldering were I understood  that a chisel tip is one of the keys, so I filed down my smallest cone tip, Just enough to make it appear like chisel and it was the best decision. The solder stayed at the flat side and was easier to manage on those small components.
Here are some of the videos I watched:
https://www.youtube.com/watch?v=vIT4ra6Mo0s
https://www.youtube.com/watch?v=_6tpQE7ptqo
https://www.youtube.com/watch?v=QzoPxvIM2qE
https://www.youtube.com/watch?v=3NN7UGWYmBY

My loupe is made of 2 magnification glasses and you have 3 different magnifications - if you use one of the glasses you have 5x, if you use the other glass you have 10x, and if you use both you have 15x. It is an old jewelers loupe(some 20 years) and it can not be used to solder whit it but you can check the joints quite well on max magnification.
Also using a loupe at extended periods is detrimental for your eyes!

Cheers
I'm a newbie at electronics and for that always take my words with a grain of salt - it is very possible I'm wrong!

Re: Really universal soldering controller

Reply #1067 –
[quote author="puzzle"]
...
 Does anyone know an inexpensive solution for magnification?  I use a cheap eye loupe but I cannot use it and solder at the same time.[/quote]

I have used this ;)


Head-Wearing Elastic Band Magnifier with LED Illumination:
https://www.fasttech.com/products/1398900

Re: Really universal soldering controller

Reply #1068 –
[quote author="puzzle"]@Blackfinger:
[quote author="Blackfinger"]"#1 How do you manage to make / finde the "US_BootLoader.X.production.hex" in the software packet ?
Have you compile the program in MPLab ? " and
"#3 How do you manage to finde the "UniSolder.exe" in the software packet ?
Have you also compiled this program with MPLab ? "[/quote]

              On the first page is an archive "...software" - in it there are 3 folders. "front" -for the front board(pic32mx).
      UniSolder52_SoftwarefrontUS_BootLoader.XdistPIC32production    - bootloader only - flashed first
UniSolder52_SoftwarefrontUS_Firmware.XdistPIC32_with_bootloaderproduction      - hex for flashing true USB - flashed second

Second is "PC" - there is the pc software.
          UniSolder52_SoftwarePCUniSolderbinRelease

And third is for the pic on the sensor board.
I did not compile anything, Sparky is very kind and provides every little detail for the project to be successful.[/quote]

Thanks ! Puzzle

I manage to finde alle the file with your help.

[quote author="Blackfinger"]"#2 How do you wire the Pickit3 to the 5 pin header on frond board ?
Do you have a wire connection diagram or description like Pickit3 Pin X --> Pin Y on 5 Pin Header on front board."[/quote]
 [quote author="puzzle"] Well, on the 5pin header you surely have seen that one of the pins is square - there goes the arrow pin from the pickit3. Count it as pin 1 and from there is easy. Actually I did not use any cables, just pluged the programmer on to the heather - arrow to the square.[/quote]

@Puzzle

If I've understood you correctly, the connection from PICkit3 to UniSolder 5.2 circuit board should be as shown in this picture?

Greetings

Re: Really universal soldering controller

Reply #1069 –
@Blackfinger:
Glad to be able to help!

Quote
If I've understood you correctly, the connection from PICkit3 to UniSolder 5.2 circuit board should be as shown in this picture?

Yes, exsactly.

Greetings
I'm a newbie at electronics and for that always take my words with a grain of salt - it is very possible I'm wrong!

Re: Really universal soldering controller

Reply #1070 –
Hello puzzle,

I am not finished soldering yet but could you post pictures of how the boards all connect together?  I am not sure how the 10 pin connector is wired together and also how the OLED board connects to the main board.

Thank you!

Re: Really universal soldering controller

Reply #1071 –
@ScotY808:
I'm very sorry, but at this time I can't help. I have seasonal job and at this time of the year I'm in different city, and don't know when I'll go back. You could try find the pins looking at the schematics and probing with a Multimeter, as I did. Also my suggestion is to draw and label the findings. I did use my drawings allot wile wiring the soldering iron connectors.
If no one else replies to your request I will try to montage the posted here photos but will not guarantee it will be absolutely correct.
Never the less it will be better for you and your development in electronics if at least try to find them yourself.
I'm a newbie at electronics and for that always take my words with a grain of salt - it is very possible I'm wrong!

Re: Really universal soldering controller

Reply #1072 –
[quote author="afedorov"]
Not all TSOPs really supports 3.3V supply, got TSOP4836 and it doesn't work, had to replace it by TSOP34840 which works well.[/quote]

[quote author="SZ64"]
Hi DinikS,

• Instead of the RPM7140 (Carrier freq. 40.0kHz) (ROHM) can use TSOP4840 (Carrier freq. 40.0kHz) (VISHAY)
• Instead of the KM4457F3C (Kingbright) can use CQX48, TSKS5400S (VISHAY) or IRL80A (OSRAM)

All of these above replacement parts I tested and everything works fine ;)[/quote]

Hi guys, thanks for help. I've never worked with IR so I doubted with my choice.
SZ64 I've seen your message regarding the issue in the thread earlier and have already rebuild the sensor PCB for my holder but couldn't find any listed IR receiver in my city. So yesterday I had to order TSOP4840 from ebay.

Re: Really universal soldering controller

Reply #1073 –
[quote author="ScotY808"]Hello puzzle,
I am not sure how the 10 pin connector is wired together and also how the OLED board connects to the main board.
[/quote]
Shrouded 10-pin receptacle and corresponding plug have a triangular mark for pin 1 on it. Flat cable usually have a red wire at one side (or all wires have a different color). On a PCB there is rectangular pad at connector's pin 1. Put it all together and you'll be fine.
OLED can be mounted using standard single row male 2.54mm headers. Flat flex cable of the screen should point to the top of the front board. Solder headers to the OLED board as flat as possible (pins should not protrude over PCB top face)

Re: Really universal soldering controller

Reply #1074 –
2 DinikS
Place a bypass cap as close as possible to the IR receiver. Also, I recommend to implement additional RC filter on the power line, something like 10R and 4.7uF would be enough. IR receivers very susceptible to a power line noise.

Re: Really universal soldering controller

Reply #1075 –
[quote author="afedorov"]
Place a bypass cap as close as possible to the IR receiver.
[/quote]
C2 must be close to IR reciever and C3 must be close to MCU. Also, the power line must be thicker, with tantalum capacitor  close to connector from which the power is coming.

[quote author="afedorov"]
 Also, I recommend to implement additional RC filter on the power line, something like 10R and 4.7uF would be enough. IR receivers very susceptible to a power line noise.[/quote]

Tantalum is higher than this.
10R won't hurt in this case (and won't help either), but I prefer inductor instead of resistor where filtering is mandatory.

I can say with high degree of confidence that no additional parts are needed for reliable work. I have 2 holders working side by side on my desk last 5-6 years, and are working on both 5V and 3.3V. I even had to shift the IR LED carrier frequency a bit in order to attenuate the signal, otherwise it managed to penetrate (I suspect reflections) even when some of my irons were in the holder. And in my room there was CFL, T8 Fluorescent, LED lighting, my computer monitor is nearby, my window is looking to the west, so sunlight penetrates easily, but nothing ever caused the holder sensors to stop working reliably.

Re: Really universal soldering controller

Reply #1076 –
Thank you for the pictures and explanation, afedorov!  Also, thank you, too puzzle. Like sparkybg, you have helped me very much!

Does anyone have sensor PCB for sale?

Re: Really universal soldering controller

Reply #1077 –
[attachment=0]bottom_sensor_PCB.jpg[quote author="afedorov"]2 DinikS
Place a bypass cap as close as possible to the IR receiver. Also, I recommend to implement additional RC filter on the power line, something like 10R and 4.7uF would be enough. IR receivers very susceptible to a power line noise.[/quote]
[quote author="sparkybg"][quote author="afedorov"]
Place a bypass cap as close as possible to the IR receiver.
[/quote]
C2 must be close to IR reciever and C3 must be close to MCU. Also, the power line must be thicker, with tantalum capacitor  close to connector from which the power is coming.

Tantalum is higher than this.
10R won't hurt in this case (and won't help either), but I prefer inductor instead of resistor where filtering is mandatory.

.....[/quote]

Hi guys, thanks for support.

I redrew the PCB tried to take into account remarks. Pls see attached models

Re: Really universal soldering controller

Reply #1078 –
Hi DinikS

What PCB drawing program are you using ?

Re: Really universal soldering controller

Reply #1079 –
[quote author="Blackfinger"]Hi DinikS

What PCB drawing program are you using ?[/quote]
Hi Blackfinger, I'm using KiCad. It's not so flexible like Altium or Mentor but it's fully free. It's an open source software.
http://kicad-pcb.org/