SigOS: Hardware: Difference between revisions
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It is not necessary to use ribbon cable for wiring the hardware. However, it is low cost, convenient to work with, helps reduce "rats nest", and consistently using the same color wire for components simplifies construction and debugging. | It is not necessary to use ribbon cable for wiring the hardware. However, it is low cost, convenient to work with, helps reduce "rats nest", and consistently using the same color wire for components simplifies construction and debugging. | ||
* Wire guage: 22, 24, or 26 AWG | |||
* Source: [https://www.amazon.com/dp/B0BS9HWV81?ref=ppx_yo2ov_dt_b_fed_asin_title <i>Amazon.com</i>] | * Source: [https://www.amazon.com/dp/B0BS9HWV81?ref=ppx_yo2ov_dt_b_fed_asin_title <i>Amazon.com</i>] | ||
Revision as of 18:26, 5 December 2024
The Signal Operating System is designed to operate on low-cost hardware. This encourages extensive use for Signals and Detectors throughout most railroads, large and small.
Components
Control Board
Ribbon Cable
It is not necessary to use ribbon cable for wiring the hardware. However, it is low cost, convenient to work with, helps reduce "rats nest", and consistently using the same color wire for components simplifies construction and debugging.
- Wire guage: 22, 24, or 26 AWG
- Source: Amazon.com
CdS photoresistor
A CdS photoresistor is a light-sensitive resistor. It detects the ambient light at the signal head, which SigOS uses to control the brightness of the WS281 LEDs.
- Pin 1
- Either wire from CdS photoresistor
- Wire color: Green
- Function: Variable voltage into GPIO P1 of Control Board A/D converter, voltage is inversely proportional to ambient light level
- Pin 2
- Other wire from CdS photoresistor
- Wire color: Yellow
- Function: +3.3 volt power
- Part number: GL5516
- Characteristics: Bright light 5-10k Ohms, dark 0.2M Ohms
- Source: Amazon.com