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Search Results for 'kvm'

Inside a Generic 8 Port USB/PS2 KVM Switch (Dated 2004)

Posted in Teardowns on Jun 24th, 2018

Today we’ll be taking a look at a Generic 8 Port USB/PS2 KVM Switch which has 8 ports which you can switch to with 2x USB/PS2 inputs and a monitor output. There are no markings on the vendor on the outside of the box. After a few screws we’re in. (Picture might look a little […]

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Building a KVM – Part 4: Expansion board arrived

Posted in Projects on Nov 29th, 2014

From our last part we moved over to the ATtiny24, our PCB arrived, tested good and made a quick case for it. This time we’ll check out the expansion board, a new case with changes needed to make the case work and the KVM board is now available for purchase. The expansion board has arrived, […]

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Expandable KVM

Posted in on Nov 28th, 2014

A Keyboard Video Mouse (KVM) that allows you to switch the keyboard, video and mouse between 2 computers using 2 buttons. The 2 USB inputs don’t just have to be a keyboard and mouse; they can be any USB device that you like (up to USB 1.1, USB hard drives not supported). You can expand […]

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Building a KVM – Part 3: Changing to ATtiny24 and PCBs arrived

Posted in Projects on Sep 6th, 2014

From our last part we made a PCB prototype and looked into how we could expand past two ports using 7400 series logic but in the end it’s easier to use an ATtiny to do this which we’ll take a look at this time plus the PCBs have arrived and I’ve made a case for […]

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Building a KVM – Part 2: PCB Prototype and expanding past 2 KVM ports

Posted in Projects on Jun 24th, 2014

From our last part we chose the switches to use, the cabling idea to use network cables to connect to USB cables, the 7402 NOR gate to switch between inputs and gave it a test run on the VGA which worked. In this part we’ll put it all together and think about how we can […]

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Building a KVM – Part 1: Selecting switches for video/USB, cabling and using 7400 series logic

Posted in Projects on May 24th, 2014

Back a few years ago when I read the EEPROM of a KVM, we did have an issue where occasionally it wouldn’t switch between computers. A KVM is a keyboard video mouse device that you switch between computers by the press of a button, they can have 2, 4, 8, 16 or more ports. Recently […]

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Reading data from EEPROM I2C on a PCB

Posted in Arduino, Tinkering on Dec 22nd, 2010

I thought I’d look into reading data from an EEPROM that is I2C capable from a PCB, the PCB is from a KVM which is a device that allows you to use your keyboard, video (monitor) and mouse on different PCs without switching out the cables. Below is the PCB and the EEPROM which we’ll […]

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