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# IBM 5291 keyboard converter
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[IBM 5291](https://deskthority.net/wiki/IBM_Model_F#IBM_5291_Keyboard)
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A converter for the eponymous keyboard.
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Keyboard Maintainer: [Listofoptions](https://github.com/listofoptions)
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Hardware Supported: IBM 5291, Teensy 2.0
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Make example for this keyboard (after setting up your build environment):
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make converter/ibm_5291:default
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See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
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The pinout is as follows:
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IBM−5291−Cable to Pinhead−14
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| pin | description
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----|------------------------
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1 | GND
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2 | NC
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3 | GND
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4 | GN)
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5 | +5V
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6 | D0
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7 | D1
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8 | D2
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9 | D3
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10| D4
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11| D5
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12| D6
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13| Strobe
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14| Out
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The pins on this connector are organized
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IBM−5291−2 Cable with DB15M connector
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| pin | description
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----|-------------
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|1,2,3 | GND
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|4 | +5V
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|5 | D0
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|6 | D1
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|7 | D2
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|8 | D3
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|9 | D4
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|10 | D5
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|11 | D6
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|12 | Strobe
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|13 | Out
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|14 | PE
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|15 | NC
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The above connector is actually numbered so it should be easier to determine
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where the needed connections are.
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To connect to the teensy, the following are pins are needed (if you should choose not set your own):
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* PB0 -> PB6 are connected to D0 -> D6
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* +5V is connected to the corresponding teensy pin
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* gnd is as well, only one of the gnd pins needs to be connected though.
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* strobe is connected to pin PD1
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* data is connected to PD0
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* PE does not need to be connected to anything, but it could also be connected to gnd
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sources:
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http://www.retrocomputing.eu/documents/5291_MaintenanceLibrary.pdf
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