Pim van Pelt
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77 lines
5.3 KiB
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title: "Week 3, Saturday: ESP32 PDU"
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date: 2024-08-17T21:55:00+02:00
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---
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{{< image frame="true" width="17em" float="right" src="/img/headline/junglecakes.png" alt="Credit: Jungle Cakes, Youtube" >}}
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This morning Marina enthusiastically exclaimed that I have four (!) packages in the mail. I think
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she may be a bit jealous! While sipping my morning coffee, I take the scissors and start hacking
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away at the packaging. There are two NFC readers that will pair with the two rolls of NTAG stickers
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that I have waiting to be used. The idea is to put them on the Frys-IX pins and link to some random
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articles at IPng.
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I quickly find out that it's not a good idea to put the nTAG on a metal surface - when I stick it
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behind the paper and press it into a normal 38mm pin (our 59mm stuff is still underway), it won't
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read or even detect the tag. And indeed, even if I put the tag on my macbook case (which is metal),
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it does not read. That's a bummer! But luckily for me, I made magnetic pins which have a plastic
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back. So I can do a _silver medal_, by sticking the nTAG stickers simply on the back of the pin
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rather than on the inside. Partial win!
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For lunch, we eat scrambled eggs. Quinn fixes a batch with potatoes and cheese, which Marina
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partakes in. I am not a fan of cheese in my eggs, so I scramble two eggs with ham instead. There's
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still a bit of artisanal bread left over, which I put in the toaster. I like being my own baker.
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The whole afternoon is actually spent mass-assembling my PDUs. I have somw _Waco_ terminal blocks, a
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few hundred 3.8mm crimp plugs and sleeves, and last night I printed 4pcs of green front. I put on
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the printer for another batch of green front, and I already had 10pcs of red front. One by one, I
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click in the 4x220V sockets, snipping the strip at the bottom, cutting it to the right length, and
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bending it upwards. This way, I have a common ground and live, and will have individual neutral
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lines that will loop back through the ammeters.
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I'm feeding each 4xC13 block individually, so for each PDU I'll make 4x ground line, 4x live line
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and 16x neutral, and I have 8 PDUs, which means the whole afternoon is spent listening to music and
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cutting identical lengths, stripping the wires, crimping on the 3.8mm connectors on one side (those
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will go to the back of the sockets), and stripping the other side at the correct length to go into
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the terminal blocks. I make a proto layout of the inside of the device, making sure to leave room
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for an ESP32+Ethernet or USB+RS485 insert on one end. I think I did an okay job.
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Before I know it, it's 17:00 and I still need to go to the _Coop_ (our local grocery store) to get
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food. Tonight I'm making garlic soup and stuffed bellpepper; and it being 5 o'clock on the Saturday
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before school starts, means that our grocery store is super busy. I bike there, make my way through
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the crowd, and find a disappointing lack of groceries in this store. No leek, no cellery, no minced
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beef. Harumpph! I loop around the butcher who still has some mixed beef/pork, which will do. For the
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veggies, I make do with some alternatives.
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Quinn is game to help me with dinner. He does the pairing and prep work, while I spend some time
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with three bulbs of garlic. And because I normally burn the _croutons_, he is so kind as to do this
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task -- and deliver beautifully golden brown and tasty croutons, while I start on the soup. Five
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stars on yelp! The rest is pretty quickly done, just putting all the veggies together with the
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minced meat, and, as the titular recipe states, proceeding to stuff that into bell peppers. The
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whole thing goes into the oven for 15min, while the rice boils: `tadaa.wav`
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After dinner, we decide to catch a movie. It's Quinn's turn (Marina recently chose _Elektra_, and
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I choose _Poor Things_ the other day). He chooses a good one: Deadpool & Wolverine. I thoroughly
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enjoy this zany movie. It's light hearted, just the right amount of vulgar, and I love it how Hugh
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Jackman came back to do this movie after having sead he'd stop after _Logan_. Also, Dafne Keen grew!
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And now we know why Jennifer Garner came back to work out, to once again play _Elektra_. And, it was
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nice to see Wesley Snipes playing a super small part. Recommended watching :)
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At 21:30 the movie is done and Marina and I decide to watch one more _Coppers_. I turn in after that
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as I'm somehow still tired. I realized just now that I didn't even say what the other packages were.
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I guess I'll talk more about them tomorrow.
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## Pictures of the Day
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{{< gallery-category >}}
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{{< gallery-photo fn="2024-08-17/nfc.png" caption="NFC Tools showing my first ever written nTAG215" >}}
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{{< gallery-photo fn="2024-08-17/IMG_0698.JPG" caption="Crimping power cables; each PDU will have 28 such cables" >}}
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{{< gallery-photo fn="2024-08-17/IMG_0699.JPG" caption="I 3D printed a left 'green' and right 'red' side, to show that these are two different feeds in one PDU" >}}
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{{< gallery-photo fn="2024-08-17/IMG_0700.JPG" caption="Quinn and I are making dinner - garlic soup and stuffed bellpepper" >}}
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{{< gallery-photo fn="2024-08-17/IMG_0702.JPG" caption="The finished product: 3 stuffed bellpeppers. Oone is buried,and some have grated cheese (I am not a fan)" >}}
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{{< gallery-photo fn="2024-08-17/IMG_0704.JPG" caption="We watch Wolverine and Deadpool tonight - it's a lighthearted flic, and I love it how they use the fourth wall" >}}
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{{< /gallery-category >}}
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{{< gallery-modal >}}
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{{< gallery-script >}}
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