Tools Hack Daily

Friday, June 28, 2019

Benchmarking Machine Learning on the New Raspberry Pi 4, Model B @Hacksterio @Raspberry_Pi #PiDay #RaspberryPi

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Awesome post from Alasdair Allan up on Hackster.io.

At the start of last month I sat down to benchmark the new generation of accelerator hardware intended to speed up machine learning inferencing on the edge. So I’d have a rough yardstick for comparison, I also ran the same benchmarks on the Raspberry Pi. Afterwards a lot of people complained that I should have been using TensorFlow Lite on the Raspberry Pi rather than full blown TensorFlow. They were right, it ran a lot faster.

Then with the release of the AI2GO framework from Xnor.ai, which uses next generation binary weight models, I looked at the inferencing speeds of these next generation of models in comparison to ‘traditional’ TensorFlow. This also ran a lot faster.

Steampunk-Inspired Raspberry Pi Enclosure @Raspberry_Pi #PiDay #RaspberryPi

via RaspberryPi.org

We’ve seen many homemade cases over the years, from 3D-printed enclosures to LEGO, Altoid tins and gravity-defying Zelda-themed wonderments. We love them all as much as we love own — our own case being this one if you fancy one — and always look forward to seeing more.

Cue this rather fancy steampunk-inspired enclosure made by Erich Styger, as featured in the latest issue of HackSpace magazine.

See project!

8 Bits and a Byte’s #Pi4 Highlights and Celebration Project! #piday #raspberrypi @Raspberry_Pi

From 8 Bits and a Byte:

There’s a new Raspberry Pi, the Raspberry Pi 4!We give you a quick overview and build a project to welcome the Raspberry Pi 4 to the world!

Read more about the project on Hackster.io and see more on YouTube

Raspberry Pi Homebrew controller with Node Red UI @Raspberry_Pi #PiDay #RaspberryPi

from lawsonkeith via Element 14 Forums

I’m using a fish tank temperature controller at the moment to control a heater belt with a relay which is kind of ok apart from I need to go into the garage to check what it’s doing and the temperature sensor which is just a cheap thermistor just gets bungee’d to the outside of the mash tub so I’m not sure how accurate it is, especially since the temperature sensor ends up being close to the heater.

So I’m going to use my raspberry Pi to upgrade this to use Node Red so I can check what my beer is doing without leaving my arm chair. I’m also going to use an industrial PT100 probe so I get a better temperature reading. The first thing to do is a quick drawing of how this is going to be wired up, I’ll use an Analog Hat (PiIO_ADIO) for the Pi to do all the interfacing so I just need to add a power supply and mains relay to my enclosure, since the interface PCB has a step down supply for the Pi I can just use a single 0.63A 24V PSU to power everything. I’ll mount everything on DIN rail then just use gands to seal the box (ignore irrigation references that’s another project).

See full project!