Recommendations for a quiet and cheap muffler? - Lemmy.World

Anyone have any recs for a quiet and ideally cheap muffler? My bike came with a Leo Vince X3 and it’s a little too loud for me. Is the stock one the quietest?

Are Tetra Paks actually recyclable? - Lemmy.World

Assuming my municipality accepts it, are they actually being recycled? I see them being touted as recyclable. However, it seems like it would be difficult and resource-intensive to recycle but I’m not a recycling expert.

Potential spam communities - Lemmy.World

The sidebar is full of links and the user has zero posts. Communities https://lemmy.world/c/sdfsgsdgsdhg [https://lemmy.world/c/sdfsgsdgsdhg] https://lemmy.world/c/amnbjsdgsg [https://lemmy.world/c/amnbjsdgsg] Users https://lemmy.world/u/carolinamobe [https://lemmy.world/u/carolinamobe] https://lemmy.world/u/susuganan [https://lemmy.world/u/susuganan]

Last major Arabic-style mosque in China loses its domes - Lemmy.World

Routing USB signals on 2 layer flex PCBs - Lemmy.World

Does anyone have any advice on routing some high speed signals on flex PCBs? I’m looking at jlcpcb because of the low cost but I’m having difficulty getting impedances to be decent. My requirements are: - 45 ohm single ended impedance (maybe?) - 90 ohm differential impedance (usb spec) - 5A current on power pins But if we look at the capabilities: https://jlcpcb.com/capabilities/flex-pcb-capabilities [https://jlcpcb.com/capabilities/flex-pcb-capabilities] - 2 layer - substrate thickness (PI) = 25 um - 1 oz pour thickness = 35 um - min trace width/spacing = 4/4 mil = 0.101/0.101 mm - ε = 3.3 Is this feasible with this stackup? I’d like to do a 1 oz pour because of power traces, but there’s also 0.5 oz (18um) and 0.33 oz (12um). For the differential signals, when I’m doing impedance calculations, I can get to roughly 70 ohms using W=100um, S=200um. I don’t think this is good enough. I think I can get away using a 0.33 oz pour but then I’m worried about the power pins. And for the power traces, I’m needing 2.2mm, which is reasonable for the pins on a USB-C connector. But if I try using the 0.5 oz or 0.33 oz pour, it gets to be 4.2 mm and 6.3 mm, which seems impossible given the pins are tiny and very closely spaced together. Even with vias to the bottom layer, this seems problematic. Anyone have any advice here? This is just for a hobby project, so I’m really not looking to change fabs because of costs.

When are police required to use their body worn videos and dashcams? - Lemmy.World

I submitted a video request for any body worn video and in-car footage for the incident where SPD officer Anthony Belgarde pulled over a bus in West Seattle. But I was told by Edward Ocampo that no video existed for this incident. Is this a normal practice?

Obligatory Aurora Borealis post - Lemmy.World

It might be back tomorrow if you missed it tonight!

Need help setting up i2p in a Docker container - Lemmy.World

I’m looking to try out i2p but I’m having trouble getting it going. I have a docker-compose container going with this docker-compose.yml: yaml version: "3.5" services: i2p: image: geti2p/i2p ports: - 4444:4444 - 127.0.0.1:6668:6668 - 7657:7657 - 54321:12345 - 54321:12345/udp volumes: - ./i2pconfig:/i2p/.i2p - ./i2ptorrents:/i2psnark restart: always environment: - IP_ADDR=0.0.0.0 - JVM_XMX=1024m The container starts up and the log outputs: $ docker logs i2p-i2p-1 Starting I2P [startapp] Running in container [startapp] setting reachable IP to container IP 0.0.0.0 Starting I2P 2.4.0-0 But when I try to access the console, I’m seeing: $ curl localhost:7657 curl: (56) Recv failure: Connection reset by peer Is there anything else that I need to do here?

The Phantom Island of Google Maps - Map Men - Lemmy.World