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Librem 5 Phone Dogwood Thermals and Battery Life
Purism makes premium phones, laptops, mini PCs and servers running free software on PureOS. Purism products respect people's privacy and freedom while protecting their security.
New
The latest blog posts to take off on Hacker News. 4,807 posts.
Hardware & Electronics
Any year
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Data Runner Watch Prototype – Modded Casio F91W
Today I want to show you a watch modification that I've been working on. I'm calling it the Data Runner, and it's another F91W mod, this time going the extra mile to make something functional and nice looking.
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Pinebook Pro longer term usage report
I bought a Pinebook Pro in the first batch, and have been using it on and off for several months now. Some people I know wanted to know if ...
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Inside the 8086 processor, tiny charge pumps create a negative voltage
Introduced in 1978, the revolutionary Intel 8086 microprocessor led to the x86 processors used in most desktop and server computing today....
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On Liberating My Smartwatch from Cloud Services
I’ve often said that if we convince ourselves that technology is magic, we risk becoming hostages to it . Just recently, I had a brush with this fate, but happily, I was saved by open source.
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Z80 Explorer – a Zilog Z80 netlist-level simulator
Z80 Explorer is a Z80 netlist-level simulator capable of running Z80 machine code and also an educational tool with features that help reverse engineer and understand this chip better.
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Pine64 announce the Pinecil, TS100 compatible RISC-V soldering iron
I cannot remember the last time I had this much to report. With so many announcements and highlights, I ran out of time and didn’t cover a handful of topics that happened this month. If I find the time, I’ll make a complimentary post later this month to cover the outstanding topics. Before we get into it, I’d also…
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Building DIY LED strips for fun
I work remotely and have for many years, but let's be honest: it's the case for a lot of people now. Lately I've been trying to step up how my home office looks, especially with regards to its video conferencing capabilities. I started using a DSLR as
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The Intel 8086 processor's registers: from chip to transistors
The Intel 8086 microprocessor is one of the most influential chips ever created; it led to the x86 architecture that dominates desktop and...
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How Pulse Oximeters Work (2015)
Principles of how pulse oximetry works explained without using complicated physics.
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Reverse engineering a camera protocol for fun and profit
Way back in late 2019 , I dissected a Reolink B800 IP camera to demonstrate the various parts of an embedded Linux system. It’s fairly nice hardware, actually—it has a 4K video sensor, a microphone, power over Ethernet, and is nominally waterproof. And yes, it runs Linux.
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Pixelopolis, a self-driving car demo from Google I/O built with TensorFlow-Lite
Pixelopolis is an interactive installation that showcases self-driving miniature cars powered by TensorFlow Lite. Each car is outfitted with its own Pixel phone, which used its camera to detect and understand signals from the world around it. In order to sense lanes, avoid collisions and read traffic signs, the phone…
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The AirPods Pro “Rattlegate”
The AirPods Pro “Rattlegate” The first generation of the AirPods was generally regarded as a perfect product. “Apple at its best!” was the universally accepted opinion. I used them for a long time. No speaker issues, no battery issues. Excited for the noise cancelling feature I ordered the AirPods Pro and for the…
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Tin Can Phone Modem
Mike Kohn's music, software, and electronics projects.
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New Compute Engine A2 VMs–First Nvidia Ampere A100 GPUs in the Cloud
Google Cloud’s new Accelerator-Optimized (A2) VM family is based on the NVIDIA Ampere A100 GPU, and designed for demanding HPC and ML workloads.
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Robot Disinfects Greater Boston Food Bank
MIT’s Computer Science and Artificial Intelligence Laboratory (CSAIL), in collaboration with Ava Robotics and the Greater Boston Food Bank, designed a robot that disinfects surfaces and neutralizes aerosolized coronavirus with UV-C light. The approach uses a custom UV-C light fixture designed at CSAIL that is…
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Google offers free fabbing for 130nm open-source chips
Did you ever dream about creating your own chip? I mean, a physical chip. One which you can hold in your hand, and which does exactly what you've designed it to do?
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Exciting Days for ARM Processors
Introduction ARM CPUs have long dominated the mobile world, nearly all Apple and Android phones and tablets utilize some model of ARM processor. However Intel and AMD still dominate the laptop, des…
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I made a macro keypad with 3D-printed switches
Latest on the 3d-printed keyboard switch project: I've reached a switch design that I think is probably reliable enough, and I've put 3 of them together to form a macro keypad just to see how it all goes together before I commit to a full keyboard. I don't have a number for how many presses the switch lasts, other…
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UASP makes Raspberry Pi 4 disk IO 50% faster
You can view a video related to this blog post here: Does UASP make the Raspberry Pi faster?. A couple weeks ago, I did some testing with my Raspberry Pi 4 and external USB SSD drives. I found a USB 3.0 SSD was ten times faster than the fastest microSD card I tested. In the comments on the video associated with that…
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Rust on the ESP32 (2019)
Scott Mabin's blog
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Lisp Badge: A single-board computer that you can program in uLisp
The Lisp Badge is a self-contained computer with its own display and keyboard, based on an ATmega1284, that you can program in uLisp:
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Raspberry Pi 4 PCIe bridge “chip”
After seeing the work done by Thomasz Mloduchowski and Colin Riley with managing to bridge the Raspberry Pi 4's PCI-Express bus to a USB 3.0 port, and then seeing these comments on hack-a-day, I thought I would give it a go too! So, here's a PCIe bridge chip that simply replaces the VL805 USB 3.
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Holographic optics for thin and lightweight virtual reality
Facebook Reality Labs (FRL) is always exploring new optical architectures to improve form factor, comfort, and optical performance. Last fall,...
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Google Acquires North
Google has acquired North, a pioneer in human computer interfaces and smart glasses.
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Arduino FIDO2 Authenticator
Introducing URU Card: an open-source, wallet-sized FIDO2 BLE authenticator based on ESP32, ATECC508A, OLED screen, and MPR121 touch keyboard. Join the project and start building your own secure authenticator.
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Commodore SX-64 keyboard restoration
Extreme refurbishing of a Commodore SX-64 keyboard. Lots of putty, epoxy resin and spray painting with original color and more :)