ChatGPT explains Cultural Attache.
Cultural Attache
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Hole punchers
I tore apart a few old hole punchers to salvage them for parts. I bolted the top of one of them to my drawer, so it can hold my pencil for me. :)
Apart from the casing this was the main haul:
My loose screws box:
Bluetooth signal quality on MacBook Pro
If you press the Option key then click the Bluetooth icon on your MacBook Pro then MacOS will show you the signal strength (RSSI) and other info about your Bluetooth devices. RSSI is the “Received Signal Strength Indicator” as explained by ChatGPT. The current RSSI for my bluetooth speakers is -67dBm, which ChatGPT explains:
An RSSI value of -67 dBm is generally considered a good signal strength when it comes to WiFi, and the same could be roughly said for Bluetooth and other wireless communication technologies. In terms of qualitative interpretation:
- -30 to -50 dBm: Excellent signal strength. This is about as good as it gets. Usually, this is only seen when you’re very close to the access point or device.
- -50 to -70 dBm: Good signal strength. For most general applications, this range provides a reliable, strong connection. Voice, streaming, and even video applications usually work well in this range.
- -67 dBm: This specific value is often cited in WiFi scenarios as the minimum strength for reliable voice applications.
- -70 to -90 dBm: Fair signal strength. The connection is more susceptible to interference and might not be reliable for all applications. Data rates will be lower, and minor obstructions can cause the signal to drop.
- Below -90 dBm: Poor signal strength. The connection is unreliable and might drop frequently. It’s challenging to maintain a stable connection in this range.
So, an RSSI of -67 dBm is generally good for most applications, including voice and streaming. However, the actual performance can vary based on the specific wireless technology in use, the environment (presence of physical obstructions, other interfering signals), and the application’s specific requirements.
Fuse access
I rewired my ATX power supply breakout board so that I would have ready access to the fuses. Probably gonna blow a few of those! The fuses are 5A 250V fast blow (F5A250V) so I can’t draw more than 60 Watts (at 12V). You can see in the previous post and the picture at the bottom of this post that the terminals used to be connected above the fuses, impeding access.
The ATX power supply breakout board is a Geekcreit® XH-M229 Desktop Computer Chassis Power Supply Module ATX Transfer Board Power Output Terminal Module.
This is the new setup:
This is the old setup:
ATX power
I made three power cables today. Blue for 3.3V, Red for 5V, and Yellow for 12V. I used 4mm lugs and bolted them to my ATX power supply breakout board. So now I have some handy power rails on my bench powered from an old computer power supply.
USB Hub Chain
Well. Turns out you can only chain up to five USB hubs. I know, because I tried to chain six. I feel like this is a life accomplishment, and it should unlock a secret level or something. After finding this limitation myself, ChatGPT confirmed it.
Saturn PCB Design Toolkit
Today while watching EEVblog 1559 – PCB Design: Trace Current Rating I learned about the Saturn PCB Design Toolkit.
Bluetooth!
For a long while now I have been having intermittent problems with the audio in my lab. I stream the GoaPsy channel from di.fm, and I really love it, but not when there’s skipping! I figured the problem was related to latency and jitter on my broadband connection, and if so, there was little to be done, except to wait for network conditions at my ISP to change.
But this evening I noticed that when I sat close in to my workstation to type the skipping would start. Then if I moved back in my chair, it would stop. I found I could actually cause the skipping to start or stop just by moving around in my chair!
Turns out the problem wasn’t my internet connection, the problem was the bluetooth connection between my laptop and my speakers! To fix the problem I got underneath my desk and moved my sub woofer about one foot to the left. Now when I move around in my chair my music doesn’t skip anymore! Happy days!
Who is the girl in Massive Attack?
I asked ChatGPT who is the girl in Massive Attack? It told me:
I think that’s a pretty good answer. The girl I was thinking of was Elizabeth Fraser who sings Teardrop. Horace Andy is a man, not a woman, but ChatGPT just listed him as an aside, it didn’t claim he was a woman.
I checked Massive Attack band members and there were a few other female collaborators which ChatGPT didn’t list, but it didn’t hallucinate anything or tell me any lies. I’m not sure if I should give ChatGPT a B grade for missing a few female collaborators, or an A for giving me a simpler answer which contained the fact I actually wanted to know, viz who is the girl who sings Teardrop?
Unboxing #2: Unboxing of NBD Camera | Learning Electronics In The Lab With Jay Jay
This post is part of my video blog and you can find more information about this video on this show’s homepage which is here.
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In this video I unbox my new NBD Camera. It’s cheap and terrible. I mounted it with an Arkon Wall Mount. In a future video I will demo my new camera setup. After we’ve done that we will replace the batteries in my friend’s hair trimmer. Riveting stuff! Stay tuned!
Note: I was confused while making this video, I thought the camera was a “HBD” camera, but it’s an “NDB” camera, and you will see me getting that wrong. Not a super important detail…
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