1. Wazzever

    First USB-C design – need help reviewing schematic and ESD layout

    I’m currently designing a PCB with usb-c, and I’d really appreciate some help reviewing my schematic and pcb layout for my usbc layout and especially the esd protection
  2. G

    AS3340 PCB layout. Major stability issue in oscillation.

    Hi! I've made my own PCB layout, that I've etched my self. The circuit works on breadboard but once i made the PCB there are major fluctuations in the oscillation. I power it on and it oscillates at around 16kHz to then every now and then dip down to a more audible range but its very "jittery"...
  3. H

    I am in need of a PCB design review in order to troubleshoot an issue with my design.

    I have designed a PCB for a small battery powered hand-held gaming device that utilises the ESP32-S3. I used the ESP32-S3 Zero dev board as a reference and closely followed the recommended layout from the chip’s datasheet. The PCB was manufactured by JLCPCB however it is not able to connect to a...
  4. D

    Ground Zone for ESP32,TMC2088 and Stepper Motors

    I’m creating a Kicad PCB design to replace a breadboard circuit I’ve built that helps drive three stepper motors controlled by an ESP32, TMC2208 controllers and a 4x4 keypad. The breadboard setup works well. I’m now on to designing the ground fill zone and reading tutorials etc I’m become...
  5. IshakDerbak

    Touchpad using ne555

    I'm totally new to PCB design. I'm struggling with this schematic circuit. Im trying to design its pcb layout using easyeda
  6. D

    Why are these holes and patterns on PCBs?

    I am inspecting a few PCB designs and seeing some unusual features and would love help identifying them. In two of the attached images, there appear to be unfilled holes that go all the way through the 2-layer PCB. The placement of the holes doesn't seem to align with locations for optional...
  7. genxium

    Quick doubts on FinFET

    There're many articles and videos in the internet saying that FinFET has a big advantage in transistor density, however it's difficult for me to find an example about how one FinFET's fins are actually connected to other electrodes such that the density is increased compared to using MOSFET. I...
  8. B

    PCB Review - 200V Flyback Converter

    Hello, I have a first draft of a 24VIN 200VOUT PCB and I would appreciate any feedback and suggestions, especially from anyone who has experience with switching power supply design. This is a two-layer board with a ground plane on the bottom layer. Some things that I considered while laying out...
  9. Younes Thabet

    What cases to use slots/cutouts in PCB and based on which parameters we deduce their dimentions!?

    Hello all, I am designing a PCB that contains some relays, so I decided to use cutouts to separate relay's contacts (depicted by green in image below) and maybe Neutral/line based on what I have seen in some PCB designs... my questions are: what is the purpose of cutouts/slots other than...
  10. 8

    PCB Layout - Bluetooth Antenna

    Hello, I made a breakout board for the STM32WB55 and want to use the bluetooth capability of it. Since I never did any layout with RF specs, I wanted to ask some experienced people wether or not the board I designed would 1.) boot up, and 2.) would be able to use the bluetooth feature. The top...
  11. E

    How calculate the track width in Altium designer?

    Hey Peeps! Hope you all doing good. i'm currently designing a pcb in Altium designer for 2 motors which will consume a current of approximately 5amp for a very short interval of time like 500ms or 1s max, how much should i keep the minimum track width?? Thanks
  12. P

    PCB Design: Footprint creation for Connector Molex Part 5024301430

    Could anyone provide me the knowledge on how to design the pads for this connector with special mark on point 7. How to handle the Shaded region in this design. 1. Is that need to be considered as a pad? (or) 2. Shaded region is no need to consider as a part in footprint? (or) 3. Shaded part is...
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