doc:appunti:hardware:raspberrypi_nas_x835_sata_board
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doc:appunti:hardware:raspberrypi_nas_x835_sata_board [2021/03/10 08:26] – created niccolo | doc:appunti:hardware:raspberrypi_nas_x835_sata_board [2021/04/12 14:07] (current) – niccolo | ||
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====== Raspberry Pi NAS: The X835 board ====== | ====== Raspberry Pi NAS: The X835 board ====== | ||
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+ | This page is about using the **SupTronics X835** with the Raspberry Pi, to be used as NAS and mediacenter. See the main index at **[[raspberrypi_nas]]**. | ||
In January 2021 I purchased an HDD shield for the Raspberry Pi, it is the **[[http:// | In January 2021 I purchased an HDD shield for the Raspberry Pi, it is the **[[http:// | ||
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So my advice is to **enlarge the holes in the board**, so that you can pass **#6-32 screws** to properly attach the hard disk. | So my advice is to **enlarge the holes in the board**, so that you can pass **#6-32 screws** to properly attach the hard disk. | ||
- | ===== WiFi and USB 3.0 interference problem ===== | + | ===== 2.4 GHz WiFi and USB 3.0 interference problem ===== |
+ | {{.: | ||
Long story short: the **USB 3.0** signals cause **interferences** on the **2.4 GHz** frequencies, | Long story short: the **USB 3.0** signals cause **interferences** on the **2.4 GHz** frequencies, | ||
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+ | Unfortunately I must confirm that the **2.4 GHz WiFi problem is severe**: I cannot connect to the **access point** which is just **some meters away** in the same room. Also my **wireless keyboard** (which uses an USB dongle operating on the 2.4 GHz band) become **unresponsive** when I walk away from the Raspberry Pi by just **one or two meters**. | ||
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+ | I tried to **shield** the X835 board from the Raspberry Pi using an **aluminium foil** grounded to the negative pole of the power, but it was useless. It seems that the interference is generated **into the Raspberry Pi circuits itself**, it is not added by the X835 board. Infact you can read on the internet several story about Raspberry Pi, USB 3 and 2.4 GHz WiFi problems, which do not involve the SupTronics interface. | ||
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+ | So the only viable solution for **network connection** is to use a **5 GHz WiFi** access point or the **Ethernet** cable. If you need a **wireless keyboard** or **gamepad** you can connect the USB dongle to the Raspberry Pi using an extension cable; I use one about of 0.5 meters, taking care to arrange the cable as far as possible from the Raspberry Pi. In this way **I can operate the gamepad** in the room at a distance of about 5 meters. | ||
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+ | If you **connect the X835 board** through one **USB 2 interface** of the Raspberry Pi, you can solve the interference problem. I tried that configuration and I was able to use a **remote keyboard** and a **remote gamepad** (both using a 2.4 GHz USB nano dongle) with no problems. You have to forgo the hard disk performance granted by the USB 3.0 bus (e.g. 185 Mb/s read rate) and stuck to USB 2 (32 Mb/s). | ||
* **[[https:// | * **[[https:// | ||
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* **[[https:// | * **[[https:// | ||
+ | ===== Web References ===== | ||
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+ | * **{{.: | ||
doc/appunti/hardware/raspberrypi_nas_x835_sata_board.txt · Last modified: 2021/04/12 14:07 by niccolo