Update: After posting the video yesterday, the site was hit by more low-complexity DDoS attacks, mostly just spamming one URL at a time. After I cleaned those up, the attacker finally switched to a more intelligent offense, posting actual comments to the site overnight. This morning I noticed that, and the fact the attacker found I left my edit domain un-proxied, so I switched to a different IP on DigitalOcean and shored up the Cloudflare configuration a bit more.

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Over on the Geerling Engineering YouTube channel, my Dad and I just posted a video where we installed the ASUSTOR Lockerstor 4RS - AS6504RS at his radio station, to increase their raw network storage capacity from 4 to 16 TB:

In the video, we focused on the installation, though I highlighted the unit's top-line features at the beginning.

Today I needed to play back an MP3 or WAV file through a USB audio device on a Raspberry Pi, in a Python script. "Should be easy!" I thought!

Well, a couple hours later I decided to write this blog post to document the easiest way to do it, since I had to take quite a journey to get to the point where sound actually plays through the USB audio output.

Just wanted to post this here, since I've had to do this from time to time, and always had to read through the docs and try to build my own little example of it...

If you're trying to protect an Nginx server from a ton of traffic (especially from a limited number of IP addresses hitting it with possibly DoS or DDoS-type traffic), and don't have any other protection layer in front, you can use limit_req to rate limit requests at whatever rate you choose (over a given time period) for any location on the server.

Last year, due to some extreme luck and help from a viewer, I picked up an AMD RX 6700 XT for MSRP (around $500).

My initial goal was to see if I could get the card working on a Raspberry Pi. Though my initial effort was fruitless, I've since hacked the driver to work through at least a few 'rings' of AMD's doorbell init process.

Update: I was able to get everything to work—but I couldn't get the RX 6700 XT's drivers installed in Ubuntu. There are probably a few reasons for that... but it definitely wasn't as straightforward as I had hoped. I'll post an update soon.

Last year, in my work towards bringing up a graphics card on the Raspberry Pi, I was fortunate enough to acquire an AMD Radeon RX 6700 XT at near-retail price (thanks to a viewer who assisted my luck!).