RTB_C13

My homebrew RTB C13 track sensor features a 4 channel RailCom® detector, real-time block occupancy monitoring, and dedicated short-circuit protection. It also includes a built-in EDG bus interface, allowing for seamless accessory fan-out and expanded system integration.

See also

• RTB_C10 - Master
• RTB_C11 - Power
• RTB_C12 - Booster

User Guides

• User Guide - DE
• User Guide - EN

Track Sensor features

• HDX
  • HDX bus (2Mbps half duplex, RS-485 differential)
• EDG
  • EDG accessory bus bridge (2Mbps half duplex, TTL level)
• DCC
  • Quad-Channel Real-time RailCom® Monitoring and Block Occupancy detection.
  • Current measurement per channel
  • Short-circuit safeguarding for all 4 channels
• Railcom Detector
  • channel 1 / channel 2
  • detects unlimited number of decoder per track
  • real-time reporting
• Current Sensor
  • 1mA current sensitivity
• firmware update over the bus

Hardware

The PCB layout uses SMD footprints with 0.4mm pitch, 0603 parts down to 0402. Reflow soldering is mandatory. The PCB has been optimized for automated assembly (SMD parts are located on bottom side).

PCB

• 2-layer PCB, FR4, 1.6mm
• CPU: AVR64DB48

Kicad

Schematic | Layout | Gerber

Firmware

Filename structure: { pcb }{ code }{ version }.hex

Example: C13F0001.hex

	Description
pcb	Name of matching hardware (C13)
code	Type of code contained (R=rom, B=bootloader, F=flash, U=bld update, P=UPDI factory code)
version	Release version (####)

Firmware files

UPDI / Fuses

The fuse settings as well as the P-code (C13Pxxxx.hex) has to be installed by using UPDI.

Fuses Setting
<img src=supplemental/images/C13_fuses.jpg width=500>

Images

This project is intended for hobby use only and is distributed in accordance with the Apache License 2.0 agreement.