USB PD Stand-Alone Sink Controller
USB PD Stand-Alone Sink Controller launched on October 16, 2019 with 124 votes, #219 of 3,363 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 7 years on.
In plain words
USB PD Stand-Alone Sink Controller is a hardware device that manages USB Power Delivery for applications that need to receive power through the USB-PD standard. It is designed for engineers and developers building products requiring intelligent power negotiation and delivery without relying on a host system. The controller handles the communication protocols necessary to safely draw power from compatible sources.
written from the facts on this page · September 2026
From the sources
Since USB-C’s introduction, I’ve been consistently interested in leveraging it for powering everything under 100 watt (or rather under 90 watt, since it’s hard to come by a full 100 watt USB-C power brick). I finally found time to make the first move and this is the subject of the post. I wanted to keep it simple at the start. Chips like the popular FUSB302 which only provide the wire level handling of the USB- PD protocol, require a lot of software work to make them reliably operational. And that software will need to run on a µC which adds to BOM . So I went to search and found a gem called STUSB4500 from STMicroelectronics. In short, you program some registers to chip’s NVM via I 2 C…from blog.oxplot.com
Does a similar job
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We built an open USB-C Power Delivery analyzer and programmable sinkAug 2026 · github.com · ▲8Title: Show HN: We built an open USB-C Power Delivery analyzer and programmable sink Hi HN! We’re Arbi, Marco, and Rob, and we built Dr. PD to make USB-C power problems easier to understand. It sits between a power source and device, captures and decodes their USB-PD negotiation, and correlates it with voltage and current measurements. It can also act as a programmable sink, with support for fixed supplies, PPS, AVS, and USB-PD 3.2 EPR up to 240 W. Commercial USB-PD analyzers are often priced beyond the reach of hobbyists and independent designers. We are on a mission to make high-quality…
Bluetooth USB Peripheral Relay – Bridge Bluetooth Devices to USB2024 · github.com · ▲233Hi HN! I built Bluetooth USB Peripheral Relay, a tool that lets Bluetooth devices (like keyboards and mice) connect to USB-only hosts using a Raspberry Pi Zero W. Why? My friend needed a way to use his Bluetooth mouse and keyboard on a PC with Bluetooth disabled due to policy restrictions. This tool acts as a bridge, relaying Bluetooth input over USB. It also lets you use Bluetooth peripherals with older devices that only support USB input. Tech: Written in Go, optimized for Raspberry Pi Zero W. I love HN’s community and often lurk here—I’m hoping this project is useful or at least sparks…
Pdsink – A new USB-PD 3.2 sink stack for embedded devicesNov 2025 · github.com · ▲6USB PD Sink implemetation for embedded. Contribute to pdsink/pdsink development by creating an account on GitHub.
A Software-Defined USB PD Charger (ESP32, FPGA, Open Source Hardware)Mar 2026 · crowdsupply.com · ▲6We built a multi-port USB-C PD3.2 system that treats power delivery as a software-defined problem rather than fixed-function silicon. This started as our internal R&D platform while developing a consumer charger. We were uncomfortable with the typical “the FAE handles the firmware, you just build the hardware” model that dominates the PD ecosystem. In that model, key behavior lives in vendor-controlled binaries, arbitration rules are opaque, and meaningful customization is either discouraged or impossible. We wanted full ownership of the system — from power stage to protocol logic — and we…
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