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Topic: Finalize my project (Read 170 times) previous topic - next topic

Aamiral

May 23, 2019, 11:48 am Last Edit: May 23, 2019, 12:09 pm by Aamiral
With the help of one of this forum this morning I am finalizing my project! And now I have some concern.

I want to start designing my own PCB (the shema).

On my arduino project, I use:
* An RFID module


* A Wi-Fi module

* A fingerprint reader
* Touch TFT LCD Screen
to name just that.

Now I would like to know how to get all the functionality of the RFID module, the Wi-Fi card on my PCB without soldering the Wi-Fi card or the RFID module on my PCB?

I do not want to put an Arduino, with all these modules and cables in a box. I want something compact with the functionality of the components I just mentioned!

Here is about what I want to get in the end.




I want a PCB like this but with the functionality of the RFID and WiFi module without their motherboard. I do not know if removing the components of my RFID and WiFi module and soldering them on my PCB will work and in addition the risk of damage or that they do not work properly is great.

So what do you propose to me?

cordially!

Robin2

Now I would like to know how to get all the functionality of the RFID module, the Wi-Fi card on my PCB without soldering the Wi-Fi card or the RFID module on my PCB?
I reckon this is one of those cases where if you have to ask then the answer is "you can't"

Designing PCBs for wireless devices is not trivial.

And trying to remove and re-use surface mount components would be madness.

...R
Two or three hours spent thinking and reading documentation solves most programming problems.

Aamiral

#2
May 23, 2019, 12:28 pm Last Edit: May 23, 2019, 12:30 pm by Aamiral
Quote
I reckon this is one of those cases where if you have to ask then the answer is "you can't"

Designing PCBs for wireless devices is not trivial.
the PCBs of our phones that have bluetooth, wifi, NFC and other comm modules are very compact

Quote
And trying to remove and re-use surface mount components would be madness.
What do you advise me then? to weld these modules over my PCB?

PaulS

Quote
the PCBs of our phones that have bluetooth, wifi, NFC and other comm modules are very compact
Your point is? A professional PCB designer, using tools far more sophisticated than what you can likely afford, did the design. Do you think that, as a beginner, you could have done that?

Quote
What do you advise me then?
Either adjust your expectations to your skill level and budget or hire a professional.

The art of getting good answers lies in asking good questions.

david_2018

What do you advise me then? to weld these modules over my PCB?
Most if not all of the components can be obtained without the pins or sockets soldered onto the board, and can easily be soldered down to another pc board with only a small spacing in between.  Will only make a difference of 3/16" or less in the height of the project, and a lot less prone to unforeseen problems. 

Robin2

Most if not all of the components can be obtained without the pins or sockets soldered onto the board,
I'm not sure what you mean by that.

If you mean that the OP should buy the basic surface-mount components and add them to a PCB that he has himself designed then my view if that he is unlikely to get a working solution with his present level of knowledge.

...R
Two or three hours spent thinking and reading documentation solves most programming problems.

wvmarle

Instead of hte ESP-01 of course you use the ESP-12 module, that gets you to ditch the Arduino in the process (the ESP-12 can handle everything your Arduino is doing just fine, you probably will have to add a port extender). That's a big space saver already. Or get an ESP32 and you can drop your Bluetooth adapter and have plenty of pins available. The processing power of the ESP32 will also allow you to do lots more fancy things with your display.

The RFID module: unless you have had a serious education in RF board design, and years of experience (you obviously don't or you wouldn't be here) don't even think of trying to replicate that. Use it as is. Soldered as module onto the PCB (use headers as connectors), or wired to the PCB.

Everything else: solder or crimp connectors on their wires, and connect it to your custom designed PCB.

the PCBs of our phones that have bluetooth, wifi, NFC and other comm modules are very compact
True. And I don't think you have the skills to even understand the design considerations that go in a design like that. I know it's way over MY head at least.

One phone design takes a team of hundreds of highly educated specialists months if not years to develop, depending on to what extent they can build onto a previous design.
Quality of answers is related to the quality of questions. Good questions will get good answers. Useless answers are a sign of a poor question.

wvmarle

#7
May 23, 2019, 02:46 pm Last Edit: May 23, 2019, 04:40 pm by wvmarle
Here is about what I want to get in the end.
That actually looks very much like an Android based tablet in its core.
Quality of answers is related to the quality of questions. Good questions will get good answers. Useless answers are a sign of a poor question.

david_2018

I'm not sure what you mean by that.

If you mean that the OP should buy the basic surface-mount components and add them to a PCB that he has himself designed then my view if that he is unlikely to get a working solution with his present level of knowledge.

...R
I meant you can get boards like the arduino nano, bluetooth, etc, without headers, and then get short header pins to solder between your pc board and the component board, without having to use sockets. 

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