PiKVM v3.3 HAT for Raspberry Pi 4
The PiKVM v3 HAT Board is designed to work with the Raspberry Pi 4 and provides the following features:
- HDMI capture device with max resolution 1080p 50Hz and audio support
- Keyboard & mouse emulation
- Mass storage emulation (i.e., virtual flash drive or CD drive provided by image file saved on PiKVM)
- Ability to simulate "removal and insertion" for USB for above mentioned devices
- ATX controller (allowing to switch power even if target device is off or operating system hangs)
- Onboard real-time clock
- 5v PWM fan controller
- USB & RJ-45 serial console
- The PiKVM v3 HAT board for Raspberry Pi 4
- USB-C bridge board
- ATX adapter board
- Flat CSI-2 cable
- 7x colorful jumpers
- 4x brass standoffs
- 8x screws
- Wires for connecting the ATX interface to the motherboard
To use PiKVM v3, you will need the following things, which are NOT included in the kit:
- Raspberry Pi 4 (any amount of RAM is OK)
- 5.1v 3A power supply with USB-C
- A regular HDMI cable
- USB-C to USB-A cable with DATA lines (for keyboard and mouse emulation)
- Straight Ethernet cable (NOT crossover, to connect the HAT board and ATX board)
- Micro-SD card at least 16 Gb and class 10 is strongly recommended
Known issues & limitations
- The actual frame rate of the image received via HDMI will depend on the network bandwidth, resolution and the load on the Raspberry Pi. This is usually ~20-24 FPS for 1080p over LAN.
- AIMOS switches are not fully compatible with the video capture device (as with regular HDMI CSI bridge).
- There may be compatibility issues with some motherboards (such as HP or DELL) which are the same as those that exist with Pi-KVM v2. Not everything is perfect, but if you have already used Pi-KVM v2 - our new v3 will work perfectly and please you. If there is no image from the BIOS, you can fine-tune the HDMI settings, but it is possible that the USB keyboard or Mass Storage devices will not be available in the BIOS.
Upcoming software features
- The audio capture device via HDMI works, but is not currently supported by PiKVM software.
- The fan controller operates at a constant speed, but will learn to adjust the speed smoothly in the future.
- Currently, MJPEG is used for video transmission, but you will soon get H.264 support.
- All of these features will be available in one of the future free updates of the operating system.
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I have been using this for a few weeks now and it is really great. I got mine through the Kickstarter, but its the same kit. Really happy with it. Normally KVMs that are accessible remotely over IP cost $800+ to start with.