Pinout.xyz
ghidra
Pinout.xyz | ghidra | |
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48 | 4 | |
671 | 5 | |
0.7% | - | |
6.1 | 7.5 | |
3 months ago | 6 months ago | |
HTML | Java | |
GNU General Public License v3.0 or later | Apache License 2.0 |
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Pinout.xyz
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The Pinouts Book: Pinout functions for 130 commonly used components
Obligatory shameless plug of https://pinout.xyz where I’ve been maintaining an interactive Raspberry Pi SBC pinout for some years, and the newer https://pico.pinout.xyz where I’ve tried to do the same for the Raspberry Pi Pico board. The latter also became a command-line pinout via the Python package “picopins”
I feel- and of course I’m biased- that if anything is worth bringing to the table for device pinouts it’s interactivity and accessibility. The latter, in particular, is lost in static images. I really leaned into this with the Pico Pinout, including everything from visual accessibility accommodations (avoiding low contrast text background colours), to markup for screen readers to the ability to turn off labels and reduce noise. I’m still unsure if I actually achieved my goal, but it’s been fun.
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Q: KS0212 4 port relay interface to the Raspberry Pi
There is a great resource to be found at pinout.xyz that details a lot of boards and the pins they actually use.
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Network and dual WAN monitor
All the LEDs have their negative pins together and go through two 1k resistors in series on their way to ground (any gpio ground pin). Then a short piece of jumper wire goes from the positive lead of each LED to it's GPIO pin number. Don't use the pin order number, use the GPIO number.
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Show HN: An accessible, beautiful Raspberry Pi Pico pinout
I wanted to create an accessible alternative to the official Pico pinout image, offering more complete pin details, light/dark modes, screen-readable text, and at least some capacity to focus on the peripherals you’re interested in. It’s a sister site to the now ancient Raspberry Pi pinout (https://pinout.xyz/) which started out life hosted on a Raspberry Pi.
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Setting up "Adafruit SHT-30 Mesh-protected Weather-proof Temperature/Humidity Sensor" with Raspberry Pi
GPIO PIN numbers - its a real pain with both board and BCM numbers (see pinout.xyz for details) without having to translate what the libraries use by default!
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My Star64 displays nothing on the HDMI-connected screen
The pins are at top right corner here: https://pinout.xyz/ and you just connect TX to RX, RX to TX and GND to GND. On the software side you can use picocom on the builtin serial device. Not sure which though, seems to depend on the software and exact revision of your RPi.
- Ask HN: Most interesting tech you built for just yourself?
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Wiring buttons to GPIO pins
You can see all the pins on the pin documented at https://pinout.xyz
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Connecting a pico-enabled screen on a PI4?
Use pinout.xyz to see what pins are used for the SPI interface on your Pi.
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need help with first time useing
You have mixed up the PIN numbers - the Pi has two sets on numbers (board and BCM) - see here for details
ghidra
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Show HN: A Ghidra extension that turns programs back into object files
[1] https://github.com/boricj/ghidra/tree/feature/elfrelocatebleobjectexporter
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Ask HN: Tell us about your project that's not done yet but you want feedback on
I've been working on a specific reverse-engineering technique called _unlinking_ [1] on-and-off for the past 16 months or so. I'm on my third prototype (first a set of Ghidra scripts written in Jython [2], then a fork of Ghidra [3] and now a Ghidra extension [4]) and I've started a blog in order to document it [5], which side-tracked into writing a whole series of articles on reverse-engineering to introduce the topic.
What for, you may ask? Basically I'm trying to decompile a PlayStation 1 video game and I've quickly decided that dealing alone with multiple +500 KiB executables of complete utter spaghetti code wasn't going to work. Instead, I've decided that I'd rather divide-and-conquer the problem, so I've been tooling up to split executables into relocatable object files, in order to decompile those one at a time and _Ship of Theseus_-style my way to success.
Ironically, all of that stuff is so not done that I don't even know what meaningful feedback there could be. My prototypes do work, but only for 32 bit little endian statically-linked MIPS executables. The articles on my blog are draft-quality. As for the decompilation project itself that started all of this, it hasn't seen much progress due to all of those side-quests. The overall topic is so esoteric that so far I've only managed to hear about one group of two persons that tried to do anything remotely similar and one another anecdotal account [6] that this particular skill is very uncommon among reverse engineers.
Personally, I'm starting to think that maybe I could've actually reverse-engineered and decompiled the game in the time I took to get here. I've also tried to engage with Ghidra to upstream the foundations of my modifications in my fork, but after some back-and-forth it became clear that my prototype-grade stuff wasn't industrial-grade and couldn't be merged in its current state, which is why I'm currently reworking the code in my fork as a Ghidra extension.
To those that want to provide feedback after reading all of this: beware, I've had a lot of fun going down that rabbit hole, but this is one hell of a time sink _and_ a particularly tricky mind-bender.
[1] I don't actually _know_ what's the actual name for this technique, given that there are so few resources on it out there. I do know I didn't invent it.
[2] https://github.com/boricj/ghidra-unlinker-scripts
[3] https://github.com/boricj/ghidra/tree/feature/elfrelocateble...
[4] https://github.com/boricj/ghidra-unlinker-extension
[5] https://news.ycombinator.com/item?id=36575081#36590078
[6] https://news.ycombinator.com/item?id=35729232&p=3#35740761
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Ask HN: Most interesting tech you built for just yourself?
- The relocation synthesizer for MIPS: https://github.com/boricj/ghidra/blob/feature/elfrelocateble...
- The Ghidra analyzer that leverages this synthesizer: https://github.com/boricj/ghidra/blob/feature/elfrelocatebleobjectexporter/Ghidra/Features/Delinker/src/main/java/ghidra/app/analyzers/RelocationTableSynthesizerAnalyzer.java
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