Raspberry Pi 400 vs ZX Spectrum
The release of the Raspberry Pi 400 personal computer
reminded me of a wildly popular home computer that was launched
in a similar computer-in-a-keyboard format almost 40 years ago:
the Sinclair Research ZX Spectrum.
I decided to compare the two,
following the steps
of an earlier comparison I performed between
the 2015 Rapsberry Pi Zero and the 1957 Elliott 405.
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Contact tracing via smartphone apps has been widely touted as an important
way to control and limit the spread of the COVID-19 epidemic.
However, basing contact-tracing on phone apps has several limitations.
Here are instructions for constructing a contact tracing device prototype
with a Raspberry Pi Zero-W.
The constructed device is compatible with the Apple/Google Bluetooth
contact tracing specification.
It runs the Epidose software,
which is based on the DP3T
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Installing PyTorch on a Raspberry Pi-3B+ redux
This is an update to articles for installing the
PyTorch machine learning library
on a Raspberry Pi that have been published by
Amrit Das in 2018
Saparna Nair in 2019.
It builds on them by updating the required settings and introducing a fix
and a few tweaks to make the process run considerably faster.
Although there are Python wheels floating around that offer PyTorch
as a Raspberry Pi Python package,
downloading them from unverified sources is a security risk.
Here’s how to install PyTorch from source.
Continue reading "Installing PyTorch on a Raspberry Pi-3B+ redux"
Netdata on a Raspberry Pi
A couple of days ago I had the privilege to see a demo of
by Costa Tsaousis,
the person behind this project.
The project offers comprehensive real time monitoring of a Linux computer
with low overhead in a single easily-installed and self-contained system.
I thought this was too good to be true, but the number of users and
installations hinted that this could well be the case.
I therefore decided to install the system on a Raspberry Pi I’m
configuring to replace an ancient
20 year old IBM PS/2 server.
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Raspberry Pi vs USB vs Mac Audio
The audio hardware of Raspberry Pi is
to produce relatively poor sound quality.
I bought a cheap USB sound card to try as an alternative.
Here is what I found.
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Raspberry Pi Zero vs Elliott 405
Raspberry Pi Zero
juxtaposed in front of the Norwich City Council Treasurer's Department building,
where the delivery of the Elliott 405 computer was photographed in 1957.
Here is how the two computers compare.
Continue reading "Raspberry Pi Zero vs Elliott 405"