February 19, 2025, 12:09:35 AM

Recent posts

#91
PCB TECH / Live-Neutral AC connectors in ...
Last post by ilario - January 08, 2025, 12:50:24 PM
Dear all,
I recently bought a PWR-90-240V-3.3V1.5A is AC-DC power converter which works with wide input voltage and provide 5W output 3.3V 1.5A power supply, for avoiding the problem described in this other forum post.

Now I realized that the power supply as a L(live) and N(neutral) labelled connectors. Does it really matter if the AC wires are connected in the right way (L to live and N to neutral) or it is ok also if they are inverted?

Also, I don't have any connector that seems safe enough for plugging 220 V there (the holes are placed at a standard 5.08 mm distance, but the holes are too small for the connectors I have with that spacing). In my opinion, it would be useful to mention a recommended connector on the product page. And maybe even a recommended enclosure box for safely using it...

#92
New Product Ideas / Re: RVPC improvement
Last post by vrhelmutt - January 06, 2025, 03:44:52 AM
I really like the RVPC and I think it's limited nature kind of captures the 'point' of microcomputers. I have been tinkering with the 1 GPIO connection from the buzzer and think that the problem of media storage could be solved (albeit limited) from here. Has any one tried playing with something similar?

I am going to hopefully soon put mine in a case with it's own attached keyboard and then give making two pin removable media a try! :D
#93
A20 / Re: I have a Lime 2
Last post by LubOlimex - January 02, 2025, 08:22:14 AM
LIME2 works with 5V DC only. Applying 12V DC instantly damages it.

In most cases only D3 (overvoltage protection diode) will get damaged. If you are unlucky there might be bigger damage tho.

My advice is to unsolder D3, prepare a card with Linux and put in in the board, apply 5V DC and check if it works. If it works, ensure that 5V DC is used with the board since now there is no protection diode and if you put more than 5V bigger damage would occur. Maybe replace D3 with brand new SMBJ6.0A.

Best regards,
Lub/OLIMEX
#94
A20 / I have a Lime 2
Last post by Wattelf1948 - December 30, 2024, 09:02:29 AM
I have a Lime 2 and
1) 12 volt were applied for 15-20 seconds
2) the POWER button is broken .
I try to power it up using the battery or the power jack, but the LEDs do not light up.

Should I consider it completely broken/unusable or is there any other way to check?
#95
RT5350F / RT5350F Evb Rev A How to inter...
Last post by Kishore - December 21, 2024, 02:08:28 PM
Hi

RT5350F EVB Rev a recently flashed a "openwrt-ramips-rt305x-olinuxino-rt5350f-evb-squashfs-sysupgrade.bin file" through tftp server successfully flashed

These are the openwrt details:

root@OpenWrt:/# cat /etc/openwrt_release
DISTRIB_ID='OpenWrt'
DISTRIB_RELEASE='15.05-rc3'
DISTRIB_REVISION='r46591'
DISTRIB_CODENAME='chaos_calmer'
DISTRIB_TARGET='ramips/rt305x'
DISTRIB_DESCRIPTION='OpenWrt Chaos Calmer 15.05-rc3'
DISTRIB_TAINTS='no-all'

Now i'm facing problem is LUCI web interface in these version but didnt open web page

RT5350F Evb Rev a board ip address is 192.168.2.1
root@OpenWrt:/# ping 192.168.2.1
PING 192.168.2.1 (192.168.2.1): 56 data bytes
64 bytes from 192.168.2.1: seq=0 ttl=64 time=0.720 ms
64 bytes from 192.168.2.1: seq=1 ttl=64 time=0.660 ms
64 bytes from 192.168.2.1: seq=2 ttl=64 time=0.600 ms
64 bytes from 192.168.2.1: seq=3 ttl=64 time=0.600 ms
64 bytes from 192.168.2.1: seq=4 ttl=64 time=0.620 ms
64 bytes from 192.168.2.1: seq=5 ttl=64 time=0.600 ms
64 bytes from 192.168.2.1: seq=6 ttl=64 time=0.700 ms
64 bytes from 192.168.2.1: seq=7 ttl=64 time=0.620 ms
64 bytes from 192.168.2.1: seq=8 ttl=64 time=0.600 ms
   

succesfully configured IP address


Take a look for windows system

done at configure at ip assigning through network and systems

C:\Users\Admin>ping 192.168.2.100

Pinging 192.168.2.100 with 32 bytes of data:
Reply from 192.168.2.100: bytes=32 time<1ms TTL=128
Reply from 192.168.2.100: bytes=32 time<1ms TTL=128
Reply from 192.168.2.100: bytes=32 time<1ms TTL=128
Reply from 192.168.2.100: bytes=32 time<1ms TTL=128

Ping statistics for 192.168.2.100:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 0ms, Average = 0ms

these both has ip configuration has done. but web page has didnt accees.

can anyone give me suggestions
#96
New Products release / New Dual Band 2.4G and 5G ante...
Last post by olimex - December 20, 2024, 11:36:55 AM
New Dual Band 2.4G and 5G antenna with UF.L/IPEX connector is the perfect match for the new ESP32-C5 WiFi6 Dual Band modules from Espressif https://olimex.wordpress.com/2024/12/20/dual-band-2-4g-and-5g-external-antenna-with-uf-l-connector-now-is-available-at-olimex-com/ #wifi6 #bluetooth #wifi #2.4Ghz #5Ghz #esp32c5
#97
A64 / Re: Bookworm upgrade availabil...
Last post by olimex - December 20, 2024, 11:33:06 AM
Thanks for your feedback! We always appreciate it.
Moving to Bookworm and latest kernel is of course something we also want bad but there are lot of obstracles to do it. Not everything is supported in upstream kernel and as A64 is already considered as "old" SOC probably no one is / will be working on this, and this is far behind our own capabilities.

I asked one of our Linux developers about your security updates concern and this is what he answered: Bullseye is still in the support up to August 2026 and ELTS probably will extend it to 2031.
#98
PCB TECH / Re: Using open source PCB
Last post by Colomer_1978 - December 18, 2024, 04:08:23 PM
Thanks for clarification.
#99
PCB TECH / Re: Using open source PCB
Last post by LubOlimex - December 18, 2024, 02:57:18 PM
Yes, just modify the labels that are trademark and also might confuse the customers thinking the board was manufactured by Olimex (the Olimex logos on top and bottom, the link to the web-site, the name of the board ESP32-GATEWAY again on top and bottom). Of course if you don't publish your sources you need to remove the open hardware logo. That would be much appreciated.

It is not required to add any attribution. Speaking from experience tho it is also a good idea to have attribution somewhere either on the board or in your documentation or somewhere. A small clarification "Based on ESP32-GATEWAY design from Olimex" or similar, this might help people find more info if they encounter problem and also avoid unsubstantiated claims of plagiarism (there is no plagiarism here of course).
#100
PCB TECH / Re: Using open source PCB
Last post by Colomer_1978 - December 18, 2024, 02:30:36 PM
It's ESP32-Gateway.
I see in Github it's permited Commercial use, Modification, Distribution, Patent use, Private use
We are producing a device in wich we include that board. It was designed for small batches but now our customer is asking for a huge order and asked the PCB asembly near their location.
We won't change anything, maybe we reduce the components mounted as the SD is not used but not a redesign, and for me it is ok that Olimex is printed or not in the board but I see that Trademark use is not permited, so I guess we should remove the marking.
I asked to be sure.