Keymatrix Inputs
The PHCC system allows you to connect up to 1024 boolean (on/off) inputs. This should be sufficient for most simbuilder's needs (but no all as I've heard :-)
This allows you to connect for example:
- MCP/Autopilot panel
- MIP (main instrument panel)
- CDUs
- pedestal
- overhead
- circuit breakers
- ...
These inputs are arranged in a matrix. The matrix consists of eight columns and 128 rows. The rows are organized in 16 groups of 8 rows. This translates into 16 keymatrix daughterboards with each 64 inputs (arranged as an 8x8 matrix).
Theory of Operation
- electrical: PHCC_key_overview.png (15k)
- mechanical/wiring of switches: PHCC_key64d_PH_switch_wiring.png (58k)
Available or planned PHCC Keymatrix Input Daughterboards
KEY64D_PH
Features:
- 64 inputs
- no ghosting as each input is diode protected
- connectors: pinheaders for IDC ribbon flat cables
- board size: 80x100mm (1/2 euro size)
Schematic and Layout
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| Click to enlarge [36k, 648x535] |
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| Click to enlarge [29k, 1046x693] |
Bill of Materials
The BOM is here: PHCC_KEY64D_PH.BOM.txt
This list includes prices and links to to online catalogue pages of my primary source of electronics components, Reichelt Elektronik
KEY64D_SC35
Features:
- 64 inputs
- no ghosting as each input is diode protected
- connectors: screw clamp terminals, 3.5mm spaced
- board size: 100x160mm (euro size)
Schematic and Layout
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| Click to enlarge [46k, 1011x655] |
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| Click to enlarge [33k, 1061x828] |
Bill of Materials
The BOM is here: bom_key64d_sc35.txt
This list includes prices and links to to online catalogue pages of my primary source of electronics components, Reichelt Elektronik
