Table of Contents
WIO G-Semaphore
Just a fun semaphore not related to the real semaphores found along railroad tracks.
Description
A WIOesp based stand alone semaphore.
The Lolin D32 is selected because it has an onboard battery management for charging and discharging.
The WIO type should be set to Servo and NeoPixel will be activated on demand for the WS2811 color LED.
OpenSCAD
The 3D files for the semaphore:
Note 1: Print all components separately.
Note 2: Rotate the pole in Cura by 45° to fit on the print bed, and disable support structures.
Filament
PETG is selected for outdoor usage.
| Part | Color |
|---|---|
| Bottom | Grey |
| Top | Grey |
| Pole | Military green |
| Arm | White |
| Warn board | White |
| Arm Red | Red |
| Warn Red | Red |
Wiring
| Component | Lolin D32 GPIO | Remark |
|---|---|---|
| Servo PWM | 12 | A 270 Ohm resistor should be inserted between servo and Lolin D32 |
| Servo(+) | BAT | |
| Servo(-) | GND | |
| WS2811 Data | 0 | |
| WS2811(+) | BAT | |
| WS2811(-) | GND | |
| 3V7 Battery(+) | - | Connect to the flip switch |
| 3V7 Battery(-) | GND | |
| Flip switch | BAT | Other switch connection goes to the Battery(+) |
| Electrolytic capacitor 100µF (+) | BAT | Optional for stabilise servo movements. |
| Electrolytic capacitor 100µF (-) | GND | |
| The Hall is optional and will trigger IOScript 99 | ||
| Hall(+) | BAT | |
| Hall(-) | GND | |
| Hall(S) | 36 | A 10k pull up resistor should placed over Hall(+) and Hall(S) |
D32 Pinout
Battery
Li-Ion 3V7 example common use for wireless telephones:
IOScript
IOScript ON:
00 1 S 000 000 0 02 00 1 P 000 100 0 01 255 000 000
Dateiname: sg1_000_00_001.io
IOScript OFF:
00 1 S 000 060 0 02 00 1 P 000 100 0 01 000 255 000
Dateiname: sg1_000_00_000.io
Hall
The Hall will flip between sg1_000_99_000.io and sg1_000_99_001.io. It are Just copies of the IOScripts for port zero.
Signal Setup
Interface
| Field | Value | Remark |
|---|---|---|
| Interface ID | WIO | |
| Node ID | 41 | WIO setup dependent. |
| Inverted | On | |
| RED Address:Port | 1:0 | All other addresses and ports should be remain zero. |
| Control | Default | |
| Type | Macro | To trigger IOScript on the WIO. |
Details
| Fiels | Value | Remark |
|---|---|---|
| Signal type | Main Semaphore or Light | SVG Theme dependent. |
| Aspects | 2 |
Notes
Switch the D32 on before connecting the USB for charging the battery!- Not all photos and images represent the latest developments of the semaphore.
- Use 0,05mm² decoder wire for the WS2811.
- The standard servo arm must be cut to fit.
- Print the pole without support to be able to push wires for the WS2811 through it.
Just do not watch it when the top layers are printed. :) - To enable the HALL sensor the option HALL_BUTTON_ON must be set to true in the USERCNF.h
Tips
LED Wiring
Use decoder wires for the RGB LED.
- Push the wires through the pole from top to bottom.
- Fiddle the wires through the pole foot on the bottom plate.
- Push the pole in the foot, and make sure the wires can still be moved.
Brass Tube
If the PETG pole is not 100% straight, a brass tube of ø4mm can be inserted to straighten it.
The tube is wide enough for the wiring.
