View source for PHCC Daughterboards

explain Daughterboards here. 

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== Input  ==

* Digital
** Pushbuttons
** Switches
** Rotary Switches
** ... and similar momentary or permanent on/off devices 
* Analog
** potentiometers
** other devices with 0-5V variable output


=== Digital Inputs ===
Each PHCC Motherboard can read up to 1024 digital input channels. 
These inputs are available through [[Keymatrix Daughterboards]]. 
Each Keymatrix Daughterboard provides 64 inputs, in an 8x8 matrix. 
Each PHCC Motherboard allows up to 16 [[Keymatrix Daughterboards]] to be connected.

The matrix organization means that you only need 16 (instead of 128) wires from PHCC to each set of 64 switches.
==== [[Keymatrix Daughterboards]] ====
* [[KEY64D_PH]]
* [[KEY64D_SC35]]
* [[KEY64_251]] (Strictly speaking NOT in matrix organization. Has one common wire for each input. So, there are 64+1 wires per board.)

=== Quadrature Rotary Decoder ===
Decodes quadrature encoded signals from mechanical and optical rotary encoders and makes the signals available for input to the Keymatrix Daughterboards.
* [[PHCC_rotdec]]

=== Analog Inputs ===
Analog input (0-5V) or variable-resistance devices (aka. potentiometers, rheostats) can be used as an input to the PHCC system via the 35 analog inputs on the 
* [[PHCC_Motherboard]]

== Output  ==

=== Analog Output Daughterboards ===
* [[DOA_AnOut1]]

=== Digital Output Daugterboards ===
* [[DOA_40DO]]
* [[DOB_74595+T]]

=== Servo Controller Daughterboards ===
* [[DOA_8Servo]]

=== Stepper Controller Daughterboards ===
* [[DOA_stepper_293]]

=== Aircore Controller Daughterboards ===
* [[DOA_stepper_293]] (with different firmware)

=== LED, 7-segment displays, and other segmented displays ===
Segmented displays (7-segment, 14-segment, starburst, etc), LED bargraphs,  as well as individual LEDs can be driven by the following controllers:
* [[DOA_7seg]] (both common anode and common cathode)
* [[DOA_877_4067]] (old, runs only on slower DOA clocks)

=== LCD ===
see [[UPHCC]] sister project.

=== D'Arsonval Meter Movement ===
D'Arsonval meter movements, aka. galvanometers, can be controlled directly from the DOA_AnOut1 outputs.
* [[DOA_AnOut1]]

== Other  ==

=== USB interface ===
* [[PHCC_usb]]

=== Bus Terminator ===
* [[DOB_term]] (terminator for the end of the DOB bus)

=== Bus Repeater/Amplifier ===
see Bus Differential Converter.

=== Bus Differential Converter ===
* [[PHCC_LXLAT_DOA-dDOA]] (level translator DOA->differential DOA)
* [[PHCC_LXLAT_dDOA-DOA]] (level translator differential DOA -> DOA)


=== Testers ===
* [[PHCC_ParportTester_DOA_DOB]]

== Non-PHCC ==
* [[THVP]], a parallel port PIC microcontroller programmer (aka. PIC burner)