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pzw

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Everything posted by pzw

  1. I am looking for enclosures (cases) to mount Orange Pi boards in. I have the original enclosures, but they do not have any space for additional boards / wiring etc. And there is no way to mount the enclosure... I am wondering what other people use to mount the boards. If there are no enclosures available for OPi boards, maybe there are some available for other boards. I am not interested in Raspberry enclosures since I don't want to use RPis .
  2. The reason that I needed the dimensions is that I wanted to create an eagle footprint for a pcb I'm designing.
  3. @renaudrenaud; Thanks. I have used the ruler and it is a lot easier for sure!
  4. I have indeed the autocad files. I have draftsight to open them, but am not really capable to get a decent measurement from it. I have tried by selecting the elements and calculating using the coordinates, but some of the "measurements" seem a bit strange. Therefore I was hoping someone has a drawing / can add to the autocad files the dimensions / locations of the headers etc..
  5. Hello, I am looking for a dimensional (mechanical) drawing of the OPi Zero. I have found the dwg files at the orangepi website (see attached rar archive) but I am running into issues figuring out what the exact locations are of the holes & headers. Does anyone have a drawing like that? Or maybe an AutoCad wizard can help me with this using the original files.. Thanks! ORANGE_PI-Zero-V1_1_PCB-DWG.rar
  6. Zador; In my years designing / building all sorts of electronic circuits I have always used the datasheets as a reference starting point. I have also found out that in a lot of cases there can be improvements made, especially looking at voltage stability and noise suppression from voltage regulators. Yes, the datasheet recommends a electrolytic capacitor on the input and just a ceramic capacitor on the output.. However when you are looking at a load on a 7805 which will have a lot of higher frequency load changes, it is recommendable to use (preferably and low ESR) electrolytic cap on the output of the regulator.. It can prevent / solve strange issues.
  7. Agree with zador. What you can try to do (if possible) is lower the voltage to 8-9V, instead of 12V. That will remove 1W of heat from the 7805. Also install a heatsink on the regulator, and do not forget to add a electrolytic capacitor of 220uF - 1000uF at the output of the regulator to take care of the current surges a SBC produces at times. Depending on the exact type of the 7805 you might run into the max. current handling capacity. The most common TO220 version is standard 1A max... There are 78M05 units, but those will require a heatsink for the much higher current. All in all is a 7805 a poor choice for your application. I would recommend looking at a switching regulator of i.e. Recom. Do not forget the additional capacitance on the output though...
  8. Look at building something using these: http://www.ti.com/product/tps25924/description
  9. A 1a fuse will not melt at 1.1a. If you want that use a poly fuse instead.
  10. Are you sure your antenna is good? (Properly connected etc?) This sounds like a missing / broken antenna to me....
  11. Are you sure your media converter doesn't have dip switches / jumpers you have to setup? If they do, make sure they are set to 100Mbit full duplex, and then try again... It sounds like there is an auto negotiation issue, so you cannot rely on it to work properly. Therefore forcing every device in the chain to 100Mbit (if possible) might solve the issue.
  12. Try "sudo apt-get install ethtool", and then again "sudo ethtool -s eth0 speed 100 duplex full autoneg off"
  13. Try sudo ethtool -s eth0 speed 100 duplex full autoneg off
  14. Just found it on Aliexpress: https://www.aliexpress.com/item/New-Orange-Pi-PC2-H5-64bit-Support-the-Lubuntu-linux-and-android-mini-PC-Beyond-Raspberry/32761481418.html I ordered one to go and try it out / check the features. I am very interested in seeing the performance / heat dissipation...
  15. Good news . Your switch and opi one don't negotiate the link correctly. That sometimes happens. I think you can use the h3consumption tool to make it persistent. (I don't have access to an opi at the moment...)
  16. Ok. Thanks for the reply. I'll go for the "easy" route of upgrading the 5.20 image..
  17. Try "sudo ethtool -s eth0 speed 100 duplex full autoneg off" ...
  18. Hello all, Where can I find the latest (and greatest?) version or Armbian. I think it is at the moment v5.24 . I looked at http://www.armbian.com/download/ and http://image.armbian.com/ . But no luck...? Is there another location? Or do I need to build from source? Thanks!
  19. In that case check if the cable is wired correctly. Should be straight through ... Also check if the connector is crimped properly...
  20. Is your cable not too long? Ethernet cable length cannot exceed 100m in total! If it's longer you need an active device in between...
  21. Looks like it will work with passive POE. (See tracks coming from pin 4/5 & 7&8 of RJ45)
  22. Are you sure that this is correct? sample_resolution = 32 I would say that the resolution should be 2x sample resolution you're trying to capture?
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