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Hello there

I have created a simple 2 layer board with 7 ws2812b leds and the corresponding decoupling caps.

I would like your input on the pcb layout and routing.

https://easyeda.com/kwkegr1997/neopixel-stick

(disclaimer: i'm a total noob at pcb design)

submitted by /u/rinshes
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So I've been recently looking online and notice there is a clear benefit to using Reel tape over cut tape in larger batch runs but I'm not too sure as to what point do I make the switch to reel?

Is it when a specific component is over 20, 50 or 100?

submitted by /u/InsertTitles
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I have to design PCBs sometimes in my work, but I have no supervisor or someone to ask. I have to do on my own. And I have no idea how good or bad I am. So, I would like to know how long other experienced people take to design PCBs for my self-assessment and goal.

Here are some example:

  1. Arduino Mega 2560

  2. EVAL-ADuM4136

  3. ISL26104AV28EV1Z

Could you comment long would they take you to make a proper PCB after having the schematics ready and how often you design the PCBs?

submitted by /u/flugnix
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Hello, I searched on the internet and found nothing, about a way to transfer toner on both side of a double sided pcb, by using the heatless method.

Do anybody has a tutorial, link, advise on how to succeed this ?

Regards and thanks.

submitted by /u/paloumbo
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Hi, I'm fairly new to pcb development and manufacturing. I placed an order for 4 different sets of boards from jlcpcb, which required exposed traces on the bottom so I left out the bottom soldermask during Gerber generation. Everything looked fine in their viewer with exposed traces etc.

Fast forward a few days for shipping and the entire bottom layer is covered in a soldermask completely defeating the point of the board.

Is leaving out the bottom soldermask on me, or should I complain?

Also if anyone has any suggestions on removing soldermask I'm all ears.

submitted by /u/alcoholicbacon
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Hello, I'm designing a small device that uses an ATtiny-24A with a LoRa and GPS module to track its location. This will be my first project with SPI so I was wondering if everything is wired correctly. Am i missing some pull-up/down resistors? Does the programmer (I will be using a raspberry pi) need some sort of protection? Can the LoRa module (868 MHz) use the same antenna as the GPS module?

Perhaps I will remove the boost converter since a cr2032 already gives 3V.

The 47uF caps are there for when the radio modules suddenly need more power to transmit/receive data.

Schematic: https://imgur.com/a/P1sQljl

Thanks

submitted by /u/rasmus_rap
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So my professor in electronics 1 course is requirijg us to use cadence virtuozo (through a university license) to simulate for component parameters, and simulate simple circuits like full wave peak rectifiers. I need a software other than cadence to verify my work because i am starting to question myself with this cadence. It gives such weird results that i started to doubt in myself especially since i changed my major from something i was good at to computer engineering because its what i really want (or so i thought at the time). So anyone got any tips?

submitted by /u/madmes
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Who would be the first person I talk to if I wanted to get a PCB design for a eurorack module idea that I have. Would I need to first employ a circuit designer, then a PCB designer, or do engineers have experience in both areas?

Much thanks!

submitted by /u/bursttransmission
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I made some changes based on the feedback I received from the subreddit a few days ago

Here's a list of the changes that I made based on feedback from /u/sensors:

  • Based on a few calculations that I did, I would be dumping almost 9W of power with the 3.3V LDO, so I switched it out for a buck-converter chip: link to the new voltage converter schematic
  • Moved the decoupling capacitors and rerouted the wires going to/from them
  • Moved the ESP32 based on page 10/11 of the design guidelines to follow "position 3"

Links to the new PCB:

Let me know if the revision has any issues that I overlooked when redoing the design.

Thanks

submitted by /u/krownedk1ng
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Hi

I need to produce a interdigital copper trace on a PCB but i am unsure how to do this in eagle, does anyone know of any resources to help me with this.

Thanks

submitted by /u/mowgols
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