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I'm new to designing PCBs and have wanted to make a tiny accelerometer/gyroscope circuit for ages now. I did some ChatGPT-ing and digging around on the internet to come up with my own PCB which I think might work from what I've seen, but I want to make sure it works before getting them made. Here it is:

Schematic

The VCC is 3.3 volts, the 1x4 pins are for programming the ATTINY85-20SF with a separate Arduino nano, I have pull up resisters on the SDA and SCL, decoupling capacitors between VCC and GND on the ATTINY and MPU6500, resisters shortly after the ATTINY's SDA and SCL so that programming it using the 1x4 pins doesn't interfere with the MPU6500, and a some components I don't really know what they do.

As I said, I'm new to a lot of this and want to make sure it looks good before getting some, so feedback on what I could improve, what I don't need, and if this currently works would be greatly appreciated, thanks!

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  • \$\begingroup\$ Wrong, PIN 8 on AVR is not connected to VCC. The same is true for pin 13 of a MPU6500. So this will not work. Take a look at the example diagram in the chip datasheet invensense.tdk.com/wp-content/uploads/2020/06/… (figure 4a) \$\endgroup\$ Commented Oct 25 at 6:36
  • \$\begingroup\$ Over the past few months, I've seen several such incorrectly connected capacitors on IC VCC pins. Such a complete lack of understanding of the function of a capacitor in an otherwise reasonably sensible circuit diagram is hard to explain. Is this a ChatGPT-specific bug? \$\endgroup\$ Commented Oct 25 at 22:33
  • \$\begingroup\$ Almost all MCU vendors provide some sort of hardware design guide, Microchip has AVR® Microcontroller Hardware Design Considerations that you should go through before hardware design. In short, don't design hardware with ChatGPT, design your hardware with device datasheet/hardware design guide instead. \$\endgroup\$ Commented Oct 27 at 5:34

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