Electronic Eel

227 Followers
272 Following
3K Posts
Strange fish zapping around in the 'net.
Pronounshe/him
My projectshttps://github.com/electroniceel/
LocationVantablack Forest
Languagesen, de

@RichiH would a 5G antenna that is forwarded over Bluetooth still be useful speed-wise?

AFAIK bluetooth has a theoretical max speed of 2 mbit/s - that is way slower than you practically get via LTE or 5G.

@knuppelbeer /dev/iscream and /dev/uscream?
FoolishOwl (@[email protected])

Proposal for a new Linux special file: /dev/scream It's like /dev/zero, but it's endless stream of the letter 'a', with an occasional capital 'A' at a random frequency.

social.coop

@gsuberland interesting, never heard about that issue.

how is the failure mode? does it directly increase ESR, lower capacitance or will the effects only show up later as lower lifespan?

@rappet nö. solche leute müssen vor allem den marketing-speak von $vendorname decodieren können und einem sagen, was da in echt dahintersteckt und wo die nachteile sind. dann sinnvolle alternativen und varianten vorschlagen.

@revk ok, using thinner wire reduces the required pressure on the tabs when you need to remove a wire. but it still depends on the user being careful.

call me old-school, but i still prefer to mount most of the connectors THT to make them mechanically more robust.

@revk yes, being able to stack them as needed is very handy. with THT models you often can manually remove an end plate and then stack them.

And with this wire thickness, and the forces applied when removing a wire, i very much prefer mounting such connectors through hole.

@azonenberg @gsuberland this is a one-off board, right? you could always take a bit of thick solid strand mains wire and hand solder it onto the 0805 footprint. should allow way more than 2A
rapunzel let down ur long flowing traces

@swetland yes, I agree. It is looking quite good. I also like that they added a good way to handle A/B firmware images and a UART bootloader.

There are just a few small things that always annoyed me on the RP2040 that they didn't improve: like no internal Vref that you can mux to the ADC - even if they already have a voltage reference integrated as part of the voltage regulator. That would allow you to back-measure the current VADC.

Also still no fast CRC as part of PIO, so you can't implement CAN where you just have a very narrow timeslot to react to CRC ok/fail.

An ethernet MAC (RMII) would have been nice too, especially in the light of the new single pair ethernet standards that are becoming more popular.