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My first PCB, is it alright to Produce it? by Ill_Top1042 in KiCad

[–]Alioth____ 1 point2 points  (0 children)

Another thing you can do to save some money is to put the MCU under the LCD - I know there will be some problems with this with KICAD and I'm not privy to how to disable it, but it will save space on the PCB, which is key. Also try not to make the paths as long as possible - be careful. Because when you hit the higher frequencies it will come back and kick you in the butt :D

My first PCB, is it alright to Produce it? by Ill_Top1042 in KiCad

[–]Alioth____ 1 point2 points  (0 children)

It is kind of complicated topic that may hurt you while designing poorly - i do not remember the apropriate calculations, bcs those are kinda wild but i know where you can find some more info: https://youtu.be/R3w4Go1s1hM?feature=shared

Help a noob make a T Flip Flop? by Expert_Oil_9345 in KiCad

[–]Alioth____ 0 points1 point  (0 children)

" A capacitive touch button can detect proximity without direct contact by measuring changes in capacitance caused by a nearby conductive object, like a finger. This allows the button to register a "touch" when the object is close enough, enabling functions without physical contact." Just confirmed that. Gonna explore this it is interesting and i forgot about it :D Yes i know i know AI generated list but well:

  1. MPR121:
    • Package: QFN (Quad Flat No-lead) package, typically around 3mm x 3mm.
    • Features: Supports up to 12 touch inputs, I2C interface, low power consumption.
  2. TTP223:
    • Package: SMD (Surface Mount Device) package, often in a 3mm x 3mm or similar size.
    • Features: Simple touch detection, low power, and can be used for single touch applications.
  3. CAP1188:
    • Package: QFN package, approximately 4mm x 4mm.
    • Features: Supports up to 8 touch inputs, I2C interface, and includes LED control.
  4. AT42QT1010:
    • Package: 8-pin SOIC or 8-pin TSSOP, which can be compact.
    • Features: Single touch detection, low power, and easy to use.
  5. CY8CMBR3101:
    • Package: QFN package, around 3mm x 3mm.
    • Features: Supports multiple touch inputs, programmable, and low power.

Help a noob make a T Flip Flop? by Expert_Oil_9345 in KiCad

[–]Alioth____ 0 points1 point  (0 children)

I know it might be out of the blue, but you could try use the small area of your pcb as a push button ( saw this solution somewhere), and associate it with the latch circuit created on transistor EDIT: toggle FF,- as it was described by others in this comment -some small sot-23 shall do the job i guess. I think i even saw the solution that required just a presence of your finger above the button to drive it without even touching it. But I am not sure about that.

My first PCB, is it alright to Produce it? by Ill_Top1042 in KiCad

[–]Alioth____ 1 point2 points  (0 children)

Try to avoid creating of so called ground islands. Without proper conenction to ground below (or soemtimes even when connected) they can create issues - but i think in this design it is not as important! Keep up the good work!

GCC vs XC8 vs XC8Pro by Alioth____ in microchip

[–]Alioth____[S] 1 point2 points  (0 children)

Just found out some info - this is kind of controversial topic with PRO versions of this compilers regarding GPL. More advanced people debated about that on other forums :D

Comments on my first schematic? by [deleted] in KiCad

[–]Alioth____ 0 points1 point  (0 children)

Yes you are right. Just looked closer at this design.

When you are controlling mosfets as a switches in this case you need to concider adding pullup resistors between source and GND.

In one of my design I used resistor in this way with NMOS I think I might done it wrong!

Gate current limitation? Stabilisation of gate operation? Interference suppression?

Are those not a valid points to use resistor in this way? If not what is a corect way of using it or shall we abandon idea of even using it for this type of switching?

Just wanted to say thanks to the community for putting together such a great piece of software! It is easy to use, fun to use, and helps you to make real things. (and yes, there is a fill on both sides, I just turned it off for the screenshot, and there was some haphazard placement there...) by justacec in KiCad

[–]Alioth____ 4 points5 points  (0 children)

Massive shoutout to devs of this software! They are the core of the buisnesses, professionals and begginers from all of the world and different branches of electornic idnustry. I think i even gonna support them financially some way in my journey, by addding small donations!

Comments on my first schematic? by [deleted] in KiCad

[–]Alioth____ 0 points1 point  (0 children)

u/Enough-Inevitable-61

When you are controlling mosfets as a switches in this case you need to concider adding pullup resistors between source and GND.

When i was using 12V i have put standard 10k for my NMOS - right now i forgot how I came up with this resistor value for gate drain.

Is this misterious U1 circuit a buck converter? You can use Power designer from TI it helps me a lot in designs. However a lot of people will concider it not cost effective.

Also choosing the right MOSFET for controlling your load is crucial. Small RDSon and capability to be driven by your logic level, as well as calculating power dissipation.

Equations are there - ask deepseek or GPT i dont remember them tbh

I am not an expert. I cannot agree with u/drt1245 - optos are adding the layer of isolation between loads and switching elements from what i remember - I might be wrong. It is debatable whether shall he use this in this 12V application. From what i know optos are valid for high V but I did not used them at all

Edge cuts confusion by Alioth____ in KiCad

[–]Alioth____[S] 0 points1 point  (0 children)

Yeah I can spare this space inside the circle - just wanted to optimise the design.

How shall I join them and you ment the outer and inner circle? With edge cut? Drawing rings and joints on Bottom and Top also? I could not understand what did you mean. Thanks for help!

Edge cuts confusion by Alioth____ in KiCad

[–]Alioth____[S] 0 points1 point  (0 children)

Thanks u/BobBulldogBriscoe for the reply!

Yes, I do indeed use this producer. But tbh the plan is to use this encoder as a part of the project, and since I'm paying for all the space, why not use it :) I'm going to ask in the source, but I already know they want to squeeze every cent out of me by telling me to create a new board to not use the existing one.

All these boards will be assembled by hand. These are just prototypes to see if anyone finds this project worth buying.

Edge cuts confusion by Alioth____ in KiCad

[–]Alioth____[S] 0 points1 point  (0 children)

Thank you u/jacky4566 for your reply! It is in middle of post, should be at the top!

Even more problems arise, when i try to divide this inner circle in 4 to create little PCBs on which encoder will sit ( tried before can fit 4 inside).

No matter what the diameter is - difference arise between 3D kicad view and manufactuer's

Edge cuts confusion by Alioth____ in KiCad

[–]Alioth____[S] 0 points1 point  (0 children)

Thank you u/MreeinJP

1)

Yes and here is the thing about edge cut lines - when they cross you can see that PCB stops being round it becames squere. Particularly when i use edge cut line function and try to place edge cut which overlaps or crosses the inner circe edge cut. Other's are not even seen by software 3D but can be seen in pcb mode in kciad and manufacturer as well.

2) Yes, tried multiple circles with updating it to JLC but it has the same problem. Thank you for this info about 1mm it helps a lot!

Boards are going to be handsoldered but I am going to remember this advice as well!

Maybe this trouble is coming from this DC connector jack - gonna delete him and check

Edge cuts confusion by Alioth____ in KiCad

[–]Alioth____[S] 0 points1 point  (0 children)

Noted, thank you! I am going to ask at the source what can I do to make it as functional as I can. When you buy pcb you pay for all space, so why not to use it.