Open Hardware: Raspberry Pi and Trace Together (Singapore) Token
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Customize your Raspberry Pi operating system for everyday use
If you have a Raspberry Pi running Raspberry Pi OS (previously known as Raspbian) operating system, you know it's an awesome little computer with a great operating system for beginners that includes just about everything you could possibly want. However, once you become familiar with the Pi and want to start using it for other things, you might want an operating system (OS) that doesn't include everything in the default build.
When that happens, you have two choices: You can pull your hair out trying to uninstall all the cruft you don't want, or you can use Raspberry Pi OS Lite to build your own custom, lightweight operating system tailored to your exact specs. I suggest saving yourself some time and aggravation and going with the latter option.
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Raspberry Pi High Quality Camera powers up homemade microscope
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New product Monday: pi3hat
This board breaks out 4x 5Mbps CAN-FD ports, 1 low speed CAN port, a 1kHz IMU and a port for a nrf24l01. Despite its name, it works just fine with the Rasbperry Pi 4 in addition to the 3b+ I have tested with mostly to date. I also have a new user-space library for interfacing with it that I will document in some upcoming posts. That library makes it pretty easy to use in a variety of applications.
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Trace Together Token: Teardown and Design Overview
On 19 June, GovTech Singapore invited four members of the community to come and inspect their new TraceTogether Token. This token removes the need to carry a phone at all times, and is designed to help both those who do not have a smart device capable of running TraceTogether well, including those using older Android devices, non-smartphones, and iOS users. I was among the group, which also consisted of Roland Turner, Harish Pillay, and Andrew "bunnie" Huang, who were given the opportunity to see the first public revision of hardware. In this post I will discuss the goal of the token, give some overview of the hardware, compare it with the app version of TraceTogether, and comment on the protocol changes.
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