Talk:Electronics Room - Revision history

Nbezanson: linked to example code

2012-01-15T10:08:54Z

linked to example code

Nbezanson: table tweaks

2012-01-15T04:53:22Z

table tweaks

Nbezanson: Added HEDS-7501 pinout

2012-01-15T04:44:57Z

Added HEDS-7501 pinout

New page

Is the talk page a good place for pinouts and other random data? It is until someone says otherwise!

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= 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.

{| width="50%" border="1" cellpadding="1" cellspacing="1"
|-
| A-phase output
| 1
| 2
| NC
|-
| Ground
| 3
| 4
| NC
|-
| NC
| 5
| 6
| Ground
|-
| Vcc
| 7
| 8
| B-phase output
|-
| Vcc
| 9
| 10
| Vcc
|}

@@ Line 7: / Line 7: @@
 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]
 {| border="1" cellpadding="1" cellspacing="1"

@@ Line 9: / Line 9: @@
 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.
-{| width="50%" border="1" cellpadding="1" cellspacing="1"
+{| border="1" cellpadding="1" cellspacing="1"
 |-
 | A-phase output