Hi All,

First of all, apologies, I am rushing this through at this time and so will return later to clean up and pad out the details but for now, here is a real quick braindump.

I pretty much fell in love with this IKEA PS 2014 lamp when I first saw it in Ikea but it simply wouldn't suite my old house but having recently moved I jumped on the chance to start this mini project.

I am not the first to do this but having been inspired by others that can be seen on YouTube I decided to make my own personal version using my very rough and ready skills.

Please be aware that I do not claim to be an electronics or microprocessor wizard, instead I love putting modular items and code together.

Anyways, the mission was to create a remote controlled Ikea lamp the core parts of this are/were:

IKEA PS 2014 Lamp
Microcontroller - WiFi enabled - Wemos D1 Mini in this case as it is so small and powerful.
Linear rod assembly, stepper motor with endstops
Remote control interface - In this case a Raspberry PI hosting a small simply WebApp to control the opening and closing of the lamp.

Step 1: WeMos D1 Mini and ULA2003 Programing

WeMos D1 Mini microcontrollers can be purchased for around £5 online from eBay or similar. They are great due to their small size and reliable WiFi connectivity along with many GPIO pins 6 of which are needed for this project. 4 for the stepper controller and 2 for the endstops.

The Arduino IDE was used to program the WeMos as follows:

//declare variables for the motor pins
int motorPin1 = 14; // pin5 Blue - 28BYJ48 pin 1 int motorPin2 = 12; // pin6 Pink - 28BYJ48 pin 2 int motorPin3 = 13; // pin7 Yellow - 28BYJ48 pin 3 int motorPin4 = 15; // pin8 Orange - 28BYJ48 pin 4 // Red - 28BYJ48 pin 5 (VCC)

int motorSpeed = 1; //variable to set stepper speed

const int EndStopOpen = 5; const int EndStopClosed = 4; const int LightControl = 6; int State = 0;

// ----------------------WiFiBits---------------- #include #include #include #define USE_SERIAL Serial ESP8266WiFiMulti WiFiMulti; String WebResult = "0";

////////////////////////////////////////////////////////////////////////////// void setup() { //declare the motor pins as outputs pinMode(motorPin1, OUTPUT); pinMode(motorPin2, OUTPUT); pinMode(motorPin3, OUTPUT); pinMode(motorPin4, OUTPUT); pinMode(EndStopOpen, INPUT); pinMode(EndStopClosed, INPUT); // pinMode(LightControl, OUTPUT); Serial.begin(115200);

//-------------------WIFI SETUP----------------- for (uint8_t t = 4; t > 0; t--) { USE_SERIAL.printf("[SETUP] WAIT %d...\n", t); USE_SERIAL.flush(); delay(1000); } WiFiMulti.addAP("ENTERyourSSIDhere", "WIFIpassword");

}

////////////////////////////////////////////////////////////////////////////// void loop() {

// -------------------- READ WEBSITE STATE ------------------------ if ((WiFiMulti.run() == WL_CONNECTED)) { HTTPClient http; USE_SERIAL.print("[HTTP] begin...\n"); // http.begin("http://jcarr437.ddns.net/test.html"); //HTTP http.begin("http://jDOMAINnameHERR.net/LampControl/LampSwitchFile.html"); //HTTP USE_SERIAL.print("[HTTP] GET...\n"); // start connection and send HTTP header int httpCode = http.GET(); // httpCode will be negative on error if (httpCode > 0) { // HTTP header has been send and Server response header has been handled USE_SERIAL.printf("[HTTP] GET... code: %d\n", httpCode); // file found at server if (httpCode == HTTP_CODE_OK) { String payload = http.getString(); USE_SERIAL.println(payload); WebResult = payload; WebResult.remove(1); } } else { USE_SERIAL.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str()); } USE_SERIAL.println(WebResult);

http.end(); //---------------------------STOP LAMP------------------------------ } if (WebResult == "0") { USE_SERIAL.println("STOP"); digitalWrite(motorPin1, LOW); digitalWrite(motorPin2, LOW); digitalWrite(motorPin3, LOW); digitalWrite(motorPin4, LOW); State = 0; }

//---------------------------OPEN LAMP------------------------------ if (WebResult == "1") { State = 1; USE_SERIAL.println("Opening Lamp"); clockwise(); } //---------------------------CLOSE LAMP------------------------------ if (WebResult == "2") { State = 2; USE_SERIAL.println("Closing Lamp"); counterclockwise(); } }

// motorSpeed = 1; // clockwise();

//////////////////////////////////////////////////////////////////////////////

void counterclockwise () { while (digitalRead(EndStopClosed) != HIGH) { // 1 digitalWrite(motorPin1, HIGH); digitalWrite(motorPin2, LOW); digitalWrite(motorPin3, LOW); digitalWrite(motorPin4, LOW); delay(motorSpeed); // 2 digitalWrite(motorPin1, HIGH); digitalWrite(motorPin2, HIGH); digitalWrite(motorPin3, LOW); digitalWrite(motorPin4, LOW); delay (motorSpeed); // 3 digitalWrite(motorPin1, LOW); digitalWrite(motorPin2, HIGH); digitalWrite(motorPin3, LOW); digitalWrite(motorPin4, LOW); delay(motorSpeed); // 4 digitalWrite(motorPin1, LOW); digitalWrite(motorPin2, HIGH); digitalWrite(motorPin3, HIGH); digitalWrite(motorPin4, LOW); delay(motorSpeed); // 5 digitalWrite(motorPin1, LOW); digitalWrite(motorPin2, LOW); digitalWrite(motorPin3, HIGH); digitalWrite(motorPin4, LOW); delay(motorSpeed); // 6 digitalWrite(motorPin1, LOW); digitalWrite(motorPin2, LOW); digitalWrite(motorPin3, HIGH); digitalWrite(motorPin4, HIGH); delay (motorSpeed); // 7 digitalWrite(motorPin1, LOW); digitalWrite(motorPin2, LOW); digitalWrite(motorPin3, LOW); digitalWrite(motorPin4, HIGH); delay(motorSpeed); // 8 digitalWrite(motorPin1, HIGH); digitalWrite(motorPin2, LOW); digitalWrite(motorPin3, LOW); digitalWrite(motorPin4, HIGH); delay(motorSpeed); } digitalWrite(motorPin1, LOW); digitalWrite(motorPin2, LOW); digitalWrite(motorPin3, LOW); digitalWrite(motorPin4, LOW); }

//////////////////////////////////////////////////////////////////////////////

void clockwise() {

while (digitalRead(EndStopOpen) != HIGH) { // 1 digitalWrite(motorPin4, HIGH); digitalWrite(motorPin3, LOW); digitalWrite(motorPin2, LOW); digitalWrite(motorPin1, LOW); delay(motorSpeed); // 2 digitalWrite(motorPin4, HIGH); digitalWrite(motorPin3, HIGH); digitalWrite(motorPin2, LOW); digitalWrite(motorPin1, LOW); delay (motorSpeed); // 3 digitalWrite(motorPin4, LOW); digitalWrite(motorPin3, HIGH); digitalWrite(motorPin2, LOW); digitalWrite(motorPin1, LOW); delay(motorSpeed); // 4 digitalWrite(motorPin4, LOW); digitalWrite(motorPin3, HIGH); digitalWrite(motorPin2, HIGH); digitalWrite(motorPin1, LOW); delay(motorSpeed); // 5 digitalWrite(motorPin4, LOW); digitalWrite(motorPin3, LOW); digitalWrite(motorPin2, HIGH); digitalWrite(motorPin1, LOW); delay(motorSpeed); // 6 digitalWrite(motorPin4, LOW); digitalWrite(motorPin3, LOW); digitalWrite(motorPin2, HIGH); digitalWrite(motorPin1, HIGH); delay (motorSpeed); // 7 digitalWrite(motorPin4, LOW); digitalWrite(motorPin3, LOW); digitalWrite(motorPin2, LOW); digitalWrite(motorPin1, HIGH); delay(motorSpeed); // 8 digitalWrite(motorPin4, HIGH); digitalWrite(motorPin3, LOW); digitalWrite(motorPin2, LOW); digitalWrite(motorPin1, HIGH); delay(motorSpeed); } digitalWrite(motorPin1, LOW); digitalWrite(motorPin2, LOW); digitalWrite(motorPin3, LOW); digitalWrite(motorPin4, LOW); }