Talk:Electronics Room
From i3Detroit
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These rotary encoders came from an Abekas A84 video editing system that I found at an E-waste recycler. Amazing, beautiful piece of technology, which I could barely bring myself to strip for parts. But the industry marches on, the A84 is well and truly obsolete, and it was a treasure trove of encoders, displays, and discrete logic chips. | These rotary encoders came from an Abekas A84 video editing system that I found at an E-waste recycler. Amazing, beautiful piece of technology, which I could barely bring myself to strip for parts. But the industry marches on, the A84 is well and truly obsolete, and it was a treasure trove of encoders, displays, and discrete logic chips. | ||
| − | Pinout: 10-position 2x5 0.100" header top view. Seems happy with 5v for Vcc. Outputs are open-collector, and sink at least enough current to light an LED, not tested further. | + | Pinout: 10-position 2x5 0.100" header top view. Seems happy with 5v for Vcc. Outputs are open-collector, and sink at least enough current to light an LED, not tested further. Outputs 1024 counts per revolution, easy to interface using [http://www.circuitsathome.com/mcu/reading-rotary-encoder-on-arduino this lovely Circuits@Home example code] |
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| A-phase output | | A-phase output | ||
Latest revision as of 06:08, 15 January 2012
Is the talk page a good place for pinouts and other random data? It is until someone says otherwise!
Avago/HP HEDS-7501 pinout
These rotary encoders came from an Abekas A84 video editing system that I found at an E-waste recycler. Amazing, beautiful piece of technology, which I could barely bring myself to strip for parts. But the industry marches on, the A84 is well and truly obsolete, and it was a treasure trove of encoders, displays, and discrete logic chips.
Pinout: 10-position 2x5 0.100" header top view. Seems happy with 5v for Vcc. Outputs are open-collector, and sink at least enough current to light an LED, not tested further. Outputs 1024 counts per revolution, easy to interface using this lovely Circuits@Home example code
| A-phase output | 1 | 2 | NC |
| Ground | 3 | 4 | NC |
| NC | 5 | 6 | Ground |
| Vcc | 7 | 8 | B-phase output |
| Vcc | 9 | 10 | Vcc |
