If you have an old logitech brand mouse or keyboard unifying ones and lost your receiver you can use this method to pair your devices by using different n. Hello some unifying ready logitech devices such as the m305 mouse come with a non unifying receiver it looks the same but instead of the unifying logo it has nano receiver written on the case. If you have a logitech unifying receiver theres already a fix here is a link to a patch provided to us by logitech sarah tew cnet with a laptop and a cheap wireless usb antenna called a crazyradio newlin found he could do that from up to 200 meters away of course you cant easily see someones laptop screen from that far out but that doesnt mean the hack isnt dangerous a . To hack this together warrior rocker used an old logitech keyboard and receiver a snes controller and a few random bits after disassembling everything the wireless capability of the logitech keyboard was transferred over to the controller and then the whole thing was sealed up nicely with a battery. The board inside the logitech unifying receiver is a simple affair with some pads for the usb connector a crystal the nrf24lu1 radio module and a few passives to get this radio chip working with his computer ajlitt simply needed to break out the spi pins and wire everything to a bus pirate getting the crazyradio firmware onto this proved to be a little harder than soldering some
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