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#diyelectronics

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Hacker News<p>Interactive pinout for the Raspberry Pi Pico 2</p><p><a href="https://pico2.pinout.xyz" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">pico2.pinout.xyz</span><span class="invisible"></span></a></p><p><a href="https://mastodon.social/tags/HackerNews" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HackerNews</span></a> <a href="https://mastodon.social/tags/InteractivePinout" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>InteractivePinout</span></a> <a href="https://mastodon.social/tags/RaspberryPiPico" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RaspberryPiPico</span></a> <a href="https://mastodon.social/tags/TechInnovation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TechInnovation</span></a> <a href="https://mastodon.social/tags/MakerCommunity" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MakerCommunity</span></a> <a href="https://mastodon.social/tags/DIYElectronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DIYElectronics</span></a></p>
Rommudoh<p>Here are a few more boards, one for 4S and two for 3S. The last one is attached to a triple 18650 battery holder and will be tested with real cells soon. So far all tests look fine.<br>The 4S and 3S LiIon were soldered using hot air and solder paste (except the MOSFETs, those were already soldered using a normal iron). This was a very pleasant experience and I will use it more often.<br><a href="https://social.tchncs.de/tags/soldering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>soldering</span></a> <a href="https://social.tchncs.de/tags/diyelectronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>diyelectronics</span></a> <a href="https://social.tchncs.de/tags/BMS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>BMS</span></a> <a href="https://social.tchncs.de/tags/lithiumbattery" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>lithiumbattery</span></a> #18650 <a href="https://social.tchncs.de/tags/BQ77915" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>BQ77915</span></a> <a href="https://social.tchncs.de/tags/hotairsoldering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>hotairsoldering</span></a> <a href="https://social.tchncs.de/tags/solderpaste" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>solderpaste</span></a></p>
Continued thread
Rommudoh

And I finished #soldering the first #BMS board. It's configured for a 5S LiIon #battery with 5A output current limit.
Here the finished board and the test setup.
So far, it works as intended. It cuts discharge at 4.91A, or when battery voltage drops below 14.5V. Charging is disabled when voltage gets too high.
I'll still have to test the temperature behavior, and how balancing works.
When I'm satisfied, I'll try with real cells.
#diyelectronics #BQ77915

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botvolution

Question for the more industrial electronics/electrical peoples here:

I've got a little build on the stocks which requires quite a few wire-to-pcb connections.

The BOM uses TE MTA-156, but those really require a special (absurdly expensive) tool to attach the wires to the female connector.

I'll sodder the wires direct to the PCBs if I have to, but I wondered what other neat, pluggy, inexpensive solutions there might be?

#diyelectronics
#electronicsdiy

Continued thread
Fluchtkapsel

Also, I thought about building my own storage enclosure for a 10 inch rack. I'm just not sure how to connect it with its host system then. Using an M.2 adapter for OCuLink in the host and an OCuLink to PCIe adapter in the enclosure? Or something with eSATA? And as I thought about purchasing a backplane like servershop24.de/hpe-gen9-sff-b I could maybe just use SFF-8087 to SATA cables. I just don't know if such a backplane can be used without a dedicated HBA controller card.

www.servershop24.deHPE Gen9 SFF Backplane | Servershop24.deHPE 8x 2.5" SFF (SC) Festplatten / Hard Disk Backplane - ProLiant DL180 / DL380 / ML350 Gen9 - 777279-001 / 729820-001
#10inch#homelab#storage
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