1/40 scale traffic light

thingiverse

This takes 5mm leds which push through from inside. They are then wired and the wires run down the pole. There is room for resistors in the head is needed. The head needs to be glued onto the pole with some model glue and left to cure , depending on the type of glue used. 5S Uv cure glue for those making a day project out of this. The back is a good fit and a few spots of glue will retain it. So print as shown in the slicer preview and assemble. For the print shown it was a 3 hour print and I used 23 grams of Pla Hook up to a micro with some code, 560 ohm resistors and enjoy playing. I had an esp32 at arm's length, hence the io pin numbers used. Alter those to suit your micro being used. /* Blink Turns an LED on for one second, then off for one second, repeatedly. Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to the correct LED pin independent of which board is used. If you want to know what pin the on-board LED is connected to on your Arduino model, check the Technical Specs of your board at: https://www.arduino.cc/en/Main/Products modified 8 May 2014 by Scott Fitzgerald modified 2 Sep 2016 by Arturo Guadalupi modified 8 Sep 2016 by Colby Newman This example code is in the public domain. https://www.arduino.cc/en/Tutorial/BuiltInExamples/Blink */ int ledRed = 25; // the number of the LED pin is pin 25 int ledYel = 26; // the number of the LED pin is pin 26 int ledGrn = 27; // the number of the LED pin is oin 27 // the setup function runs once when you press reset or power the board void setup() { pinMode(ledRed, OUTPUT); pinMode(ledYel, OUTPUT); pinMode(ledGrn, OUTPUT); } // the loop function runs over and over again forever void loop() { digitalWrite(ledGrn, HIGH); // turn the LED on (HIGH is the voltage level) delay(5000); // wait for a second digitalWrite(ledGrn, LOW); // turn the LED off by making the voltage LOW digitalWrite(ledYel, HIGH); // turn the LED on (HIGH is the voltage level) delay(1000); // wait for a second digitalWrite(ledYel, LOW); // turn the LED off by making the voltage LOW digitalWrite(ledRed, HIGH); // turn the LED on (HIGH is the voltage level) delay(5000); // wait for a second digitalWrite(ledRed, LOW); // turn the LED off by making the voltage LOW }