| 5 Mar 2024 |
 Fredrick | I need help understanding PCB fabrication, JLCPCB. In KiCad I create vias, which I as a nood thought would all be drilled and "golden", but in their preview they are covered under the solder mask. Is that supposed to be like that? ..this is my first PCB ever. '^^ | 09:30:04 |
| Fredrick | I can't upload my screenshot for some unknown reason, but a few vias inside a "golden" area, the pad under a chip are drilled but not others. | 09:31:39 |
 PurpleLady | How many layers deep is it? | 21:19:00 |
| PurpleLady | And that could be a "microVIA." | 21:22:36 |
| PurpleLady | https://www.protoexpress.com/kb/pcb-via-design/ | 21:25:55 |
| 27 Mar 2024 |
|  @d/x/p.2hz:matrix.org joined the room. | 23:53:36 |
| @d/x/p.2hz:matrix.org left the room. | 23:54:02 |
| 28 Mar 2024 |
|  Dr. Dude changed their profile picture. | 11:18:04 |
| 11 Apr 2024 |
|  lunardigs 🌒 changed their display name from lunardigs () to lunardigs 🌒. | 19:57:09 |
| 14 Apr 2024 |
|  Louwrens set their display name to Louwrens. | 13:04:35 |
| 20 Apr 2024 |
| lunardigs 🌒 | it's a day of modbus for me | 21:49:20 |
| 6 May 2024 |
|  l changed their display name from langovet to l. | 07:07:12 |
| 27 May 2024 |
|  Shish changed their display name from shish2k to Shish. | 19:32:24 |
| 3 Jun 2024 |
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| 19 Jun 2024 |
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| 16 Jul 2024 |
|  @vancha112:matrix.org left the room. | 13:29:16 |
| 9 Aug 2024 |
 rd2 | Redacted or Malformed Event | 21:33:00 |
| 10 Aug 2024 |
| rd2 | * Question:
I’m looking for a USB-C switcher that allows me to connect my USB-C EarPods to both my Mac Mini (for WhatsApp/Zoom calls) and my Pixel 7 Pro (for cellular calls). Here are the specifics of my setup:
Mac Mini: Running macOS Ventura, primarily used for WhatsApp and Zoom calls.
Pixel 7 Pro: Running Android 13, used for regular cellular phone calls.
USB-C EarPods: Standard USB-C EarPods with built-in microphone.
Requirements: The switcher should support seamless switching between devices without needing to unplug and replug the EarPods. It should also maintain audio quality and microphone functionality across both devices.
Does anyone know of a USB-C switcher that can handle this setup?
| 07:55:22 |
| 16 Aug 2024 |
| rd2 | round 2 🙈: I’m looking for a USB-C splitter for my Pixel 7 Pro that can connect to its USB-C port. The splitter should have two female USB-C ports: one for connecting USB-C Apple EarPods to make phone calls, and the other for charging the phone and supporting data transfer. This data transfer should enable USB debugging mode, allowing me to use the mirroring application, scrcpy. I’ve noticed that most products on Amazon only support data transfer on the port that supports audio, but not on the charging port. Can you recommend a product that meets these requirements? | 14:54:33 |
| rd2 | * I’m looking for a USB-C hub for my Pixel 7 Pro that can connect to its USB-C port. The hub should have two female USB-C ports: one for connecting USB-C Apple EarPods to make phone calls, and the other for charging the phone and supporting data transfer. The data transfer should enable USB debugging mode, allowing me to use the mirroring application namely scrcpy. Can you recommend a product that meets these requirements? | 17:04:19 |
| rd2 | * I’m looking for a USB-C hub for my Pixel 7 Pro USB 3.2 Gen2 port that can connect to its USB-C port. The hub should have two female USB-C ports: one for connecting USB-C Apple EarPods to make phone calls, and the other for charging the phone and supporting data transfer. The data transfer should enable USB debugging mode, allowing me to use the mirroring application namely scrcpy. Can you recommend a product that meets these requirements? | 17:34:55 |
| rd2 | i will test this Cable Matters Portable 4-in-1 https://www.amazon.de/-/en/dp/B0BKMHYT5K | 21:12:22 |
| 22 Aug 2024 |
|  @ycdmdj:filik.eu left the room. | 20:11:37 |
| 6 Sep 2024 |
|  mikolaj changed their display name from mikolaj♾️ to mikolaj. | 20:42:58 |
| 16 Sep 2024 |
| PurpleLady | I speculated on PRNG and TRNG circuits using digital ICs before and have given it more thought.
Ring oscillators can be used for producing random numbers. A ring oscillator is an odd number of inverters looped into a ring. | 02:47:35 |
| PurpleLady | Now, you want as much jitter as you can get to produce random numbers using ring oscillators. I had considered using 74xx04 ICs this way, but there might be other alternatives.
For instance, NAND and NOR can be used in place of inverters. So tie the 2 inputs together and you have an inverter. A chain configured like that can have more jitter than when using inverters.
And then you can use XOR or XNOR like this for more jitter. Just tie a line high for XOR or low with XNOR and use those like inverters. | 02:51:17 |
| PurpleLady | And then I discovered yet another way to make an inverter. Use a 2-to-1 multiplexer. Use the inputs as a table and feed the output into the selector line. | 02:53:01 |
| PurpleLady | In fact, that can be a crude mixer circuit. Sind the 2-to-1 muxes are no fewer than quad inside, you might was will use the other channels that are ganged to the one you need. So if you have the output of a channel connected to the common selector line, you can feed another frequency and an inversion of the frequency into 2 inputs of another channel. That essentially XORs (or XNORs, depending on the wiring order) that frequency with the one created by the mux itself.
Or you can use another pair of inputs for 2 different frequencies. Thus you have the clock created by a the mux gating 2 other clocks. And the more jitter they all have, the more random they are. | 19:26:18 |
| 25 Sep 2024 |
 Simó Albert i Beltran | Hello, are Ruzizao bench power supply fiable? | 06:30:04 |
| Simó Albert i Beltran | * Hello, are Jesverty bench power supply fiable? | 08:09:30 |
