June 25th, 2024

Twonkie: A USB-PD sniffer/injector/sink based on Google's Twinkie open hardware

The GitHub URL details the Twonkie project, a USB-PD sniffer inspired by Google's Twinkie. It includes design, components, modifications, assembly instructions, replacement parts, and beginner tips. Inquiries for support are encouraged.

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Twonkie: A USB-PD sniffer/injector/sink based on Google's Twinkie open hardware

The GitHub URL provided contains information about the Twonkie project, a USB-PD sniffer inspired by Google's Twinkie. The content covers project details such as design, components, modifications from the original Twinkie, assembly instructions, recommended replacement parts, and beginner tips. For additional information or support regarding the project, inquiries are welcome.

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By @normie3000 - 5 months
> This one "sniffs" the link just for the Power Delivery negotiations that happen at the lowest electrical levels. If a device or cable is misbehaving, a knowledgeable person should be able to replicate the problem and see it happening with the sniffer. They could see which component was not following spec, and most importantly, exactly what it was doing wrong. > > Even if your computer is participating in Power Delivery, it can't see its own PD traffic because all that is handled at a low level by ASIC chips in your USB port. Hence the need for a separate physical device to see the signals that are actually being sent on the wire.

https://www.reddit.com/r/UsbCHardware/comments/qmz9uz/twonki...

By @transpute - 5 months
$6 USB-C breakout for selectable voltage, https://learn.adafruit.com/adafruit-husb238-usb-type-c-power...

> The HUSB238 USB PD sink chip is neat in that you can either use jumpers (really, resistor selection) to set the desired power delivery voltage and current or you can use I2C for dynamic querying and setting.

By @ComputerGuru - 5 months
Link to original Twinkie is dead, here’s an archived copy: https://archive.is/EGxFi
By @RockRobotRock - 5 months
There is a very useful cheap device “TC66C” you can buy on aliexpress which acts as a multimeter and lets you test/trigger PD and the older protocols like Qualcomm quick charge.
By @eggy1 - 5 months
I'm twinkie, and I'm twonkie, and we're the sniffer brothers