From 16878d5858bebe5578d43374e4d371c05f296341 Mon Sep 17 00:00:00 2001 From: Maxim Devaev Date: Sun, 2 Aug 2020 00:44:29 +0300 Subject: [PATCH] Update README.md --- README.md | 21 +++++++++------------ 1 file changed, 9 insertions(+), 12 deletions(-) diff --git a/README.md b/README.md index b12f4846..07c1da17 100644 --- a/README.md +++ b/README.md @@ -19,8 +19,9 @@ A very simple and fully functional Raspberry Pi-based IP-KVM that you can make w * **Keyboard** and **mouse** (with leds and the wheel); * **Control the server power** using ATX functions; * Access via **Web UI** or **VNC**, ability to use **IPMI BMC** and **Wake-on-LAN** to control the server; -* **The ready-made OS** and packages; -* **Authorization** and SSL encryption; +* **The ready-made OS** with read-only filesystem; +* **Extensible authorization** and SSL encryption; +* **Health monitoring** of the Pi; * It only costs between $30 and $100 for parts! * 100% Open Source! @@ -84,7 +85,7 @@ A very simple and fully functional Raspberry Pi-based IP-KVM that you can make w # DIY Getting Started ## Required hardware Pi-KVM supports several different hardware configurations, referred to as **platforms**. Now available: **v2** and **v0**. -* **v2** is the recommended and most modern implementation for **Raspberry Pi 4** and **ZeroW** supporting all of the features of Pi-KVM including the **Mass Storage Drive**. **It's also the easiest to make** +* **Recommended**: **v2** is the most modern implementation for **Raspberry Pi 4** and **ZeroW** supporting all of the features of Pi-KVM including the **Mass Storage Drive**. **It's also the easiest to make** * v0 was designed to work with Raspberry Pi 2 and 3 that do not have OTG and requires a few more components for a basic implementation. It also does not support the Mass Storage Drive feature. ## Hardware for v2 @@ -94,8 +95,8 @@ Pi-KVM supports several different hardware configurations, referred to as **plat * MicroSD card (min 16 GB recommended). * 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; compression control; more reliable. - * ... or [HDMI to USB dongle](https://aliexpress.ru/item/4001043540669.html) (not available for ZeroW) - high latency ~200ms, no compression control, slower alternative (see [bellow](a-few-words-about-hdmi-usb-dongle)). + * **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)). * Only for Raspberry Pi 4: * Parts for Y-splitter cable: - 1x USB-A to USB-C cable (male-male). @@ -108,6 +109,9 @@ Pi-KVM supports several different hardware configurations, referred to as **plat - 2x 4.7k Ohm resistors. - 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. + ## Hardware for v0 * Raspberry Pi 2 or 3. * MicroSD card (8 GB is enough). @@ -122,13 +126,6 @@ Pi-KVM supports several different hardware configurations, referred to as **plat * HDMI capture device: see v2 description. * ATX control (optional): see v2 description. -#### A few words about HDMI-USB dongle -It's completely supported and Pi-KVM works great with it. However, we recommend to use [HDMI-CSI bridge](https://aliexpress.ru/item/4000102166176.html) because the USB dongle has several major disadvantages compared to it: 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. - #### 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). * 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.