April 13, 2024, 05:47:24 AM

Recent posts

#91
A10 / Re: Calibration Issues with L...
Last post by akr - March 15, 2024, 11:00:39 AM
i have protocolled the steps i did. https://docs.google.com/document/d/1oqfkm0QQoTyZlcZg3ayKIIkZZkFPQ4ySGmeAzAlThWM/edit?usp=sharing

But still i am having the same issue with the deviation around the corners. I also have uploaded a quick demo video of the current behaviour https://www.youtube.com/watch?v=SAuSQ7Tv0FQ&ab_channel=Akr
#92
ARDUINO / Re: ESP32-EVB: Ethernet Connec...
Last post by LubOlimex - March 15, 2024, 08:14:34 AM
LAN uses an extra chip LAN8710A and wires running around the board between the connector, the main ESP32 chip, the LAN8710A chip (and each wire acts as antenna for picking up noise) so it sounds reasonable to be more susceptible to the noise from triggering the load. In comparison WIFI is all inside the ESP32 module.
#93
TERES DIY Laptop / Re: teres1, how to export the ...
Last post by olimex - March 14, 2024, 08:01:19 PM
A64 Ethernet is shared with the LCD, so if you want to use the build in Ethernet you lose the LCD, quite annoying decision but Allwinner made A64 thinking for tablets where Ethernet is not mandatory
#94
ARDUINO / Re: ESP32-EVB: Ethernet Connec...
Last post by J├╝rgen - March 14, 2024, 07:02:29 PM
So now I can report something good.
After my last attempt at BSB-LAN on Olimex-EVB, connected directly to the laptop via LAN cable, also resulted in a crash, I removed the Olimex-EVB from the heater and installed it about 1m further outside.
And lo and behold, not a single abortion for 2 days.
So it's probably the burner start that triggers a magnetic wave and influences the Olimex EVB. I don't understand why this has an effect on LAN and not on WLAN.
In any case, it's a shame for everyone involved for the many empty kilometers.
#95
ESP32 / Re: Doubts ESP32-POE
Last post by LubOlimex - March 14, 2024, 01:11:27 PM
Yes, the WIFI and Bluetooth use the same antenna (no matter if it is the on-board PCB antenna or an external antenna).
#96
ESP32 / Re: Doubts ESP32-POE
Last post by Cesarpuig - March 14, 2024, 11:58:53 AM
Sorry, one more question, the EA version of the board incorporates an external antenna, is this antenna for Wi-Fi, for Bluetooth, or both? All the best.
#97
TERES DIY Laptop / Re: Development of Teres-2
Last post by DiTBho - March 14, 2024, 08:31:29 AM
Quote from: kreyren on March 13, 2024, 12:58:39 PMI don't like the idea of dongles for such a trivial thing, i feel like it would make sense for a USB-C or thunderbold, but for teres-2 i was instead thinking about using the origami ethernet connector: https://www.theverge.com/circuitbreaker/2017/12/8/16750574/pop-out-ethernet-jack but i am not sure how fragile they are

I've also been working for years on a Japanese 2000s PDA that literally fits in your shirt pocket.

Like Teres1, it doesn't have any Ethernet port.
There are two options
  • A) to buy a usb cable to its custom propietary connector (which exports, USB + lvTTL serial), and plug-in a usb-Ethernet module
  • B) to buy a microPCMCIA (same connector as used in Hitachi microDRIVEs) ethernet card with a foldable RJ45 connector

I bought the PDA in Japan and thought B) was a better idea as the foldable RJ45 connector makes the whole ultra-portable and saves valuable space in your pocket case.. but then I was disappointed with that kind of Origami connector (maybe I'll take a photo) because it's really flimsy, and sometimes make unreliable contacts with the RJ45 cable, so I'm back to A) at the moment.

I got a second hand Lenovo Carbon X1 2017, which I use every day for a living, and I can say that "the optional (lenovo) cable that wires out the ethernet port" is very reliable and practical, and, being built-in ethernet, it is also already supported by the firmware, that means you can litteraly netboot.
#98
TERES DIY Laptop / Re: teres1, how to export the ...
Last post by DiTBho - March 14, 2024, 07:38:02 AM
Quote from: kreyren on March 13, 2024, 01:01:03 PMProducts USB-Module for ethernet and if you are able to fabricate the open-source 3D printable case then you can make it easily built in

the point is that usb-ethernet is very annoying to tftpboot since I would have to hack uboot in order to support a full usb-stack and an usb-ethernet driver



#99
TERES DIY Laptop / Re: teres1, how to export the ...
Last post by kreyren - March 13, 2024, 01:03:17 PM
Quote from: DiTBho on March 13, 2024, 09:32:02 AMthe SoC should have built-in ethernet, so is it possible, by some hardware hack, to export it on RJ45-PHY?

beyond that if you want to wire the ethernet port directly to the chip on teres then the kicad files for OlinuXino-A64 should have everything you need to do that
#100
TERES DIY Laptop / Re: teres1, how to export the ...
Last post by kreyren - March 13, 2024, 01:01:03 PM
Quote from: DiTBho on March 13, 2024, 09:32:02 AMthe SoC should have built-in ethernet, so is it possible, by some hardware hack, to export it on RJ45-PHY?

A thing that I do really find annoying on teres-1 is the lack of an ethernet port as it's extremelly useful to tftpboot kernels from uboot and then to NFS.

Most teres users use this mod for teres to address this issue https://www.olimex.com/Products/USB-Modules/USB-GIGABIT/open-source-hardware for ethernet and if you are able to fabricate the open-source 3D printable case then you can make it easily built in.. If it's internals are not filled with jumper-wires then it's not proper teres! :p