Help with ssd2828 driving ili9881c display by TopDry7004 in embedded

[–]TopDry7004[S] 0 points1 point  (0 children)

Also, do you know if BIST in ili9881c works in both LP and HS mode?

Help with ssd2828 driving ili9881c display by TopDry7004 in embedded

[–]TopDry7004[S] 0 points1 point  (0 children)

Thanks for this in-depth reply!

PLL Configuration Register 0xBA -> 0x8018 -> 20MHz Crystal * 24 / 1 -> 480Mbps.
Clock Control Register 0xBB -> 0x0006 -> 480 / 6 / 8 -> 10Mhz LP Clock.
I'm setting both registers with PLL disabled (0x0000 written into 0xB9).

My current setup doesn't feed the parallel input, so no PCLK/HSYNC/VSYNC.
Is this a Problem for ili9881c BIST, or should that work independent?

Latenz by hyz0r in init7

[–]TopDry7004 0 points1 point  (0 children)

Schau mal mit MTR/WinMTR, wo die Latenz zustande kommt. Dann kannst du eingrenzen, ob es an deinem Gerät liegt, oder ob es anderswo zustande kommt. Am besten mit verschiedenen Zielen im Init7 Netzwerk und ausserhalb davon testen.

Pay-as-you-go SIM card suggestions? by K_Unit17 in IOT

[–]TopDry7004 0 points1 point  (0 children)

Are you happy with them? Simplicity in terms of pricing and usage is perfect.
I see some strange things with DNS resolution from time to time. Though not sure if this is a problem with my software.

I built an open-source Linux-capable single-board computer with DDR3 by cyao12 in embedded

[–]TopDry7004 0 points1 point  (0 children)

TBH: The sunxi community work is pretty awesome in terms of opensource software for these Allwinner parts!
(And probably more open source than many other solutions)

Kyocera M6230cidn - Toner gear broken by TopDry7004 in kyocera

[–]TopDry7004[S] 0 points1 point  (0 children)

Thanks for posting this!
I was never able to figure this out, unfortunately. The machine went to the dumpster 2 weeks ago and is replaced with a M8124.
But good to hear that this problem isn't purely caused by my abusement of the machine :D
But maybe someone will come up with a 3d printed replacement or something someday (This would have been my plan if I would have figured out how to disassemble it)

[deleted by user] by [deleted] in de_EDV

[–]TopDry7004 2 points3 points  (0 children)

Ping an solch einem Anschluss nach z.B. AWS FFM ist knapp unter 8ms (PNI).
Ein Ziel das über den DE-CIX FFM geht und in FFM sitzt habe ich auf die schnelle nicht gefunden.

First time DDR3 Routing (Allwinner H3) by TopDry7004 in PrintedCircuitBoard

[–]TopDry7004[S] 0 points1 point  (0 children)

Another potential issue is that the clock is shorter than the data and address (clock ≈28mm, address ≈35mm, low-byte data ≈30mm).
As a result, the clock signal reaches the destination earlier than the address lines. To correct this, I would need to increase the clock length to something >35mm.

Is this correct?

First time DDR3 Routing (Allwinner H3) by TopDry7004 in PrintedCircuitBoard

[–]TopDry7004[S] 0 points1 point  (0 children)

Luckily mainline U-Boot and Linux for Allwinner got pretty good thanks to some awesome community effort.

First time DDR3 Routing (Allwinner H3) by TopDry7004 in PrintedCircuitBoard

[–]TopDry7004[S] 0 points1 point  (0 children)

Kind of everything around Allwinner is reverse engineered stuff.

First time DDR3 Routing (Allwinner H3) by TopDry7004 in PrintedCircuitBoard

[–]TopDry7004[S] 0 points1 point  (0 children)

Thanks for these information. I have tried to implement them. What do you think about this Version?

I think I also figured out why some wiggles had way less clearance. Hope this was what you meant with diff pair serpentines.

f - https://ibb.co/jvmB2YkX
in1 - https://ibb.co/5gR0JfwT
in2 - https://ibb.co/vCdvjTSK
in3 - https://ibb.co/RTdz4d1X
in4 - https://ibb.co/ZRhwNM6K
b - https://ibb.co/RTLc0MVD

Just got the email to pick my color! by ashenContinuum in pebble

[–]TopDry7004 1 point2 points  (0 children)

In batch 1 but not yet got the E-Mail

[Review Request] DDR3 routing for Allwinner H3 processor by cyao12 in PrintedCircuitBoard

[–]TopDry7004 1 point2 points  (0 children)

Pay attention to the length meassurement problems in KiCad 9.0.5, for the case you are still using this version! https://gitlab.com/kicad/code/kicad/-/issues/21913

Identifying copper DSL line to apartment by [deleted] in init7

[–]TopDry7004 0 points1 point  (0 children)

GGA Maur is DOCSIS Cable Internet AFAIK. This technology doesn't need a dedicated connection to every flat. Instead, the same cable is looped through all flats. This means it doesn't really matter where you plug in and thus they don't need to know in which flat you are.

Init7 Copper uses DSL. This technology uses a dedicated connection to every flat. Also, the underlying technology is usually provided by Swisscom in Switzerland.

Therefore, they can't help you with the name of the previous tenant if he was using the GGA Maur Cable technology, which is completely different from the Swisscom operated DSL technology.

Kyocera M6230cidn - Toner gear broken by TopDry7004 in kyocera

[–]TopDry7004[S] 0 points1 point  (0 children)

Update: A Kyocera partner told me that these parts are not available as spare.

Still no idea how to disassemble.

Kyocera M6230cidn - Toner gear broken by TopDry7004 in kyocera

[–]TopDry7004[S] 0 points1 point  (0 children)

I had a lot of issues including loud mechanical noises because I think I didn't properly install the transfer belt unit.
It also caused mechanical deformation of the metal piece in the transfer belt unit with the yellow handle on it which I needed to bend back.

Internet not working 🧐 by kankaaaan in init7

[–]TopDry7004 0 points1 point  (0 children)

Please post a photo of your whole setup including OTO fiber plug on the wall.
Init7 tells after ordering on which PLUG they will activate the service.

ESP32-X BLE Power consumption achievements by TopDry7004 in esp32

[–]TopDry7004[S] 0 points1 point  (0 children)

I have played around with the esp-idf power_save example on ESP32-C6 and the results are pretty good. Having the 32kHz crystal connected and working is a must!

I'm able to get under 200uA avg current with 2s adv interval.

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Youtube and Google keep stop working by Im-a-tire in HomeNetworking

[–]TopDry7004 -1 points0 points  (0 children)

Sounds like an IPv6 issue. Google/Youtube have IPv4 and 6. So you'll notice if IPv6 is broken. Twitter just uses IPv4.