2 layers68.6 × 53.3 mm
Controller
Cemetech/TI-DCC
Direct z80 ASM DCC implementation for the TI-84 Plus C Silver Edition and similar calculators.
67 parts3BSD-3-Clause
2 layers50.5 × 20.1 mm
Controller
Cemetech/TI-DCC3Direct z80 ASM DCC implementation for the TI-84 Plus C Silver Edition and similar calculators.
- Size
- 50.5 × 20.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 16
- Nets
- 11
- Pads
- 40
- Tracks, vias
- 80, 0
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 30 Jul 2017
- Updated
- 23 Sep 2018
Overview
Controller is an open-source printed circuit board by Cemetech, from the Cemetech/TI-DCC repository on GitHub, published under the BSD-3-Clause licence. It is a 2-layer board of 50.5 × 20.1 mm with 16 parts on 11 nets, routed with 80 tracks and 0 vias.
It is built around the LMD18200T. Its parts include 5 capacitors, 3 connectors, 2 resistors, 2 ICs and 1 diode.
Main components
1README
README.mdTI-DCC
Is a z80 ASM NMRA-DCC throttle implementation for the TI-84 Plus C Silver Edition.
Features
- Custom DCC throttle interface.
- FL-F26 Function support with momentary/locking functions
- 14/28/128 step speed modes
- 2 Digit and 4 Digit addressing
ToDo
- Analog/DC throttle mode - To be implmented.
- Verify 14/128 step speed modes
- Verify Long addresses work
- Finish Reccomended schematic
Requirements
Building
- Python 2.* and the python launcher. (comes with py3...)
- Pillow
Use
- Motor driver - A motor driver/H-bridge and circuit used to generate the on rail signals for the train.
- Power supply for the motor driver. Voltage is based off of the scale train you plan on controlling. See the NMRA Standards linked at the bottom of this readme
Known good motor drivers
- LMD18200 using this circuit MiniDCC
Installation
- run _buildclean.bat
- Transfer application to calculator using TI-Connect or TILP
Controls
Configuration View
- NumberPad: Set Addresss
- F1-F3: set Speed steps mode
- F4: Set DC Controll mode
- F5: Save Changes
Controller View
- Left/Right: Set Forward or Reverse movement
- Up/Down: Adjust throttle
- Number Pad: Control functions
- F1-F3: Switch between function banks
- CFG: Open configuration view
- Lock: Allows changing of function type
- Math: Quit
- Enter: E-Stop
- SIN: Change read out colors
References
- Forum Topic: http://cemete.ch/p261712
- NMRA Documentation: https://www.nmra.org/index-nmra-standards-and-recommended-practices
Parts
16| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 10nf | Capacitors_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm | C1, C2 |
| 2 | MountingHole_3mm | Mounting_Holes:MountingHole_3mm | , |
| 1 | 1000uf | Capacitors_THT:CP_Radial_D10.0mm_P5.00mm | C4 |
| 1 | 100nf | Capacitors_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm | C3 |
| 1 | 1uf | Capacitors_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm | C5 |
| 1 | 2.7KΩ | Resistors_SMD:R_0805 | R1 |
| 1 | 220Ω | Resistors_SMD:R_0805 | R2 |
| 1 | DCC | Geekboy:pt_1,5-3-3,5-h | J3 |
| 1 | G*** | Geekboy:cememod.mod | CemeLogo |
| 1 | LED | LEDs:LED_0805 | D1 |
| 1 | LM7805_TO220 | TO_SOT_Packages_THT:TO-220-3_Vertical | U1 |
| 1 | LMD18200T | TO_SOT_Packages_THT:TO-220-11_Vertical_StaggeredType1 | U2 |
| 1 | Power | Geekboy:pt_1,5-3-3,5-h | J1 |
| 1 | Track | Geekboy:pt_1,5-2-3,5-h | J2 |
Questions
How big is the Controller PCB?
It measures 50.5 × 20.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Controller use?
16 parts, built around the LMD18200T. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Controller KiCad files?
From the Cemetech/TI-DCC repository on GitHub, at the commit this page was made from: the board is Controller/Controller.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Controller design in my own project?
Its repository publishes it under the BSD-3-Clause licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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