All Questions
Tagged with pcb-assembly pcb-design
172
questions
4
votes
6
answers
897
views
Attaching foam to the bottom of a PCB
I'm currently designing some development boards that are quite large, around 100x180mm, with lots of through-hole components. The goal is to create an educational tool for students. Because of this, I ...
- 41
0
votes
2
answers
86
views
Is it possible to create new footprints and integrate additional components into an already manufactured PCB?
What is the most effective method to do so? I have enameled wire, which seems safer to me due to the insulation. My plan is to cover them with solder mask. However, I have a question: Would it be ...
- 145
0
votes
2
answers
58
views
What is the best solution for wire to board then board to board connection?
Background: Hello, I am a first timer trying to finish this pcb redesign. I am in dire need as an intern who has no clue what they are doing but is having fun learning
I have all my schematics working ...
- 11
1
vote
1
answer
94
views
Any idea how to stack two PCBs that can work independently
This is my first time ever doing PCB stuff :D
I have two L-shaped PCBs that will stack on top of each other. The connectors would stack on each other so that it can either:
Be used with both top and ...
- 11
0
votes
1
answer
29
views
Can I treat the thermal shock test temperature as the continuous operating temperature of a conformal coating?
We are using this conformal coating on our design, HumiSeal 1B73EPA.
However, it does not state in the datasheet the continuous operating temperature for the coating, only the thermal shock test ...
- 100
0
votes
0
answers
23
views
CJMCU-3652 resistor dimensioning
I bought a CJMCU-3652. It is based upon the LT3652 from Linear Technologies. In the datasheet on page 15 there is a description on how to calculate the resistors to properly
charge whatever battery ...
0
votes
0
answers
63
views
How do they make PCB with 0.2mm tracks? [duplicate]
I want to understand how do they make PCBs with 0.2mm tracks. I have built PCB using screen printing process. As screen print requires 0.5mm minimum track thickness, I need to keep track wider. ...
- 1
0
votes
0
answers
42
views
2D mapping of PDB Layout in Allegro
I am trying to export a 2D drawing of my pcb layout in allegro. I would like the layout to include the components and their reference designators. However, I cannot find a way to do so and the ...
- 25
1
vote
0
answers
69
views
PCB Layout review: ESP-07 with 28BYJ-48 Stepper board
I have used the 28BYJ-48 in conjunction with an ESP8266 in some applications and I thought it would be handy to have pcb made. I want to use JLCPCB including Pick and Place.
The Kicad source code is ...
- 737
0
votes
0
answers
57
views
How to solder a 5.5x2.1 DC plug to a PCB?
I am looking at mounting a DC plug on the side of my PCB board.
Unfortunately, only jacks exists for purpose of PCB mounting, and there are no mountable plugs produced.
(if they existed, they would ...
- 11
0
votes
1
answer
162
views
PCB design - Routing without a schematic
I am using Altium CircuitMaker to design a PCB. I'm wondering if there's a way to make my PCB design without a schematic.
My idea is to simply make a PCB with just pads and populate it myself with the ...
- 41
0
votes
1
answer
91
views
PCB Design Process
I'm new to PCB Design so I wanted to clarify a few things about the process.
For context, I have already physically made my project on a breadboard. Now I am trying to lay it out on a PCB.
I have ...
- 41
5
votes
4
answers
2k
views
How do you align parallel connectors (e.g. Raspberry Pi CM4) in production?
Apologies if this seems like a duplicate of this question but the eventual "answer" to that seemed somewhat anecdotal at best - and there's been a LOT more of these used since 2012 so things ...
- 7,159
0
votes
2
answers
113
views
Is pad against pad enough for a good connection?
I have two PCBs that I need to connect together with holes or notched pins that I have to solder by hand.
In order to reduce soldering time, I've placed a few 2mm square pads on the bottom PCB and I'm ...
- 193
0
votes
2
answers
95
views
Why are some components missing areas of pour near mounting holes?
Circled in red are component through holes in a copper pour plane that are missing areas / don't have the copper poured completely around the via. Seen on tons of components both through hole and ...
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