Merge pull request #35 from tryallthethings/patch-1

minor link changes
pull/49/head
Maxim Devaev 4 years ago committed by GitHub
commit ac33fcca58
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@ -100,7 +100,7 @@ Pi-KVM supports several different hardware configurations, referred to as **plat
* USB-A 3A charger (female socket) or power supply.
* Video capture device:
- **Recommended**: [HDMI to CSI-2 bridge based on TC358743](https://aliexpress.com/item/4000102166176.html) - low latency ~100ms, more reliable.
- ... or [HDMI to USB dongle](https://aliexpress.ru/item/4001043540669.html) (not available for ZeroW) - high latency ~200ms, [not very reliable](#a-few-words-about-hdmi-usb-dongle)).
- ... or [HDMI to USB dongle](https://aliexpress.com/item/4001043540669.html) (not available for ZeroW) - high latency ~200ms, [not very reliable](#a-few-words-about-hdmi-usb-dongle)).
* Only for Raspberry Pi 4: parts for Y-splitter cable:
* Option #1: DIY (for soldering or twist):
- 1x USB-A to USB-C cable (male-male).
@ -118,7 +118,7 @@ Pi-KVM supports several different hardware configurations, referred to as **plat
- A breadboard and wires.
#### A few words about HDMI-USB dongle
It's completely supported and Pi-KVM works great with it. But it has some disadvantages compared with recommended [HDMI-CSI bridge](https://aliexpress.ru/item/4000102166176.html): USB gives a lot of latency (200ms vs 100ms) and it doesn't support stream compression control (you won't be able to use Pi-KVM in a place with a poor internet connection). It also cannot automatically detect screen resolution. All this is caused by the hardware limitations of the dongle itself. In addition, some users report hardware problems: the dongle may not work in the BIOS or simply stop working after a while. It's a black box, and no one knows what's inside it. If you have problems with it, it will not be possible to fix them.
It's completely supported and Pi-KVM works great with it. But it has some disadvantages compared with recommended [HDMI-CSI bridge](https://aliexpress.com/item/4000102166176.html): USB gives a lot of latency (200ms vs 100ms) and it doesn't support stream compression control (you won't be able to use Pi-KVM in a place with a poor internet connection). It also cannot automatically detect screen resolution. All this is caused by the hardware limitations of the dongle itself. In addition, some users report hardware problems: the dongle may not work in the BIOS or simply stop working after a while. It's a black box, and no one knows what's inside it. If you have problems with it, it will not be possible to fix them.
## Hardware for v0
* Raspberry Pi 2 or 3.
@ -135,7 +135,7 @@ It's completely supported and Pi-KVM works great with it. But it has some disadv
* ATX control (optional): [see v2 description](#hardware-for-v2).
#### Addition
* If you want to capture VGA from your server instead of HDMI, buy the [VGA-to-HDMI converter](https://aliexpress.ru/item/4000553298530.html).
* If you want to capture VGA from your server instead of HDMI, buy the [VGA-to-HDMI converter](https://aliexpress.com/item/4000553298530.html).
* Pi-KVM can be powered using PoE, but it is not recommend to use the official PoE HAT: it is unreliable and [not compatible with the HDMI bridge](https://github.com/pikvm/pikvm/issues/6). Use any other PoE hat without an I2C fan controller.
* **Don't use random relay modules or random optocouplers!** Some relays or optocouplers may not be sensitive enough for the Raspberry Pi, some others may be low-level controlled. Either use relays that are activated by a high logic level, or follow the design provided and buy an OMRON. See details [here](https://github.com/pikvm/pikvm/issues/13).
<img src="img/no_relays.png" alt="drawing" width="100"/>

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