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DT Tx2x Transmitter Kits
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Tx21 |
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Tx23 |
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DESCRIPTION:
Tx21 and Tx23 are compact wireless transmitters intended to control 1-3 model railway train engines.
They have controls for Speed, Direction, Inertia and Lights (depending on how used).
KIT:
The Kit includes the core components to make either a Tx21 or Tx23 transmitter.
These are DIY projects requiring some competance in drilling, fitting, soldering, etc.
KIT CONTENTS:
| Tx21 Kit | Tx23 Kit | Item |
| 1 | 1 | Tx2 |
| 1 | Small box | |
| 1 | Medium box | |
| 1 | 3 | Direction toggle switch |
| 1 | 1 | Bind pushbutton |
| 1 | 1 | On/Off pushbutton with Led |
| 1 | 1 | PP3 plug |
| 1 | 1 | Small Inertia knob |
| 1 | 3 | Medium Speed knob |
| 2 | 4 | 10k pot 300° rotation with center click (detent) |
| 2 | 8 | 10k resistor |
| 2 | 1k resistor | |
| 1 | 1 | 220 resistor |
| 1 | 1 | Plastic sheet for compartments |
| 1 | 1 | Cardboard box |
| 1 | 1 | Wiring diagram |
| 1 | 1 | Drill template |
| 1 | 1 | This page (www.DelTang.co.uk/tx2x-kit.htm) |
OTHER ITEMS NEEDED:
PP3 9v battery
Solder and iron
Glue, Drills, Files, Knife, Screwdrivers etc.
Multimeter, hookup wire, heat-shrink covering
Lipo balance leads (Tx21 5-way, Tx23 6-way) and servo extension leads (2) if you want to make Tx2 'plugable'
WIRING DIAGRAMS:
Tx21 circuit | Tx23 circuit
DRILL TEMPLATES:
Tx21 layout | Tx23 layout
TIPS:
Glue drill templates to box with Pritt and center-punch holes to minimise drill drift
Drilling the top from the inside can make it easier to miss internal mouldings and ensure you leave enough space for the battery
Protect outside of box from scratches while drilling
Resistors can be soldered direct to switches and pots or make up a vero/perf board
The on/off switch is in the negative path to make it easier to connect the one Led wire to negative (0v)
The 2 longer wires in the middle of the on/off switch are the Led, and the shorter of those goes to negative (0v)
The Direction switch leans the opposite way to the terminal it enables
Reverse is selected with the negative (0v) side of the Direction switch
Low throttle (or Reverse) is selected with the negative (0v) side of the Speed pot rotated counter-clockwise