Code: #include #include #include #include #include #include #define SCREEN_WIDTH 128 #define SCREEN_HEIGHT 64 #define OLED_RESET -1 Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET); const char* ssid = "SSID"; const char* password = "password"; String payload = ""; void connectWiFi() { display.clearDisplay(); display.setTextSize(2); display.setTextColor(SSD1306_WHITE); display.setCursor(0, 0); display.println("Connecting to WiFi..."); display.display(); WiFi.begin(ssid, password); while (WiFi.status() != WL_CONNECTED) { delay(1000); } display.clearDisplay(); display.setCursor(0, 0); display.println("Connected to WiFi"); display.display(); delay(2000); } void resetDisplay() { display.clearDisplay(); display.setTextColor(SSD1306_WHITE); display.setCursor(0, 0); } void readPrice(int x, int y, const String& stockName) { String httpRequestAddress = "finnhub.io/api/v1/quote?symbol=" + stockName + "&token=c1tjb52ad3ia4h4uee9g"; HTTPClient http; int httpCode; http.begin(httpRequestAddress); httpCode = http.GET(); if (httpCode > 0) { DynamicJsonDocument doc(1024); String payload = http.getString(); Serial.println(payload); deserializeJson(doc, payload); float previousClosePrice = doc["pc"]; float currentPrice = doc["c"]; float differenceInPrice = ((currentPrice - previousClosePrice) / previousClosePrice) * 100.0; resetDisplay(); display.setTextSize(2); display.setCursor(x, y); display.println(stockName); if (differenceInPrice display.setTextColor(SSD1306_WHITE); } else { display.setTextColor(SSD1306_WHITE); } display.setTextSize(2); display.setCursor(x, y + 25); display.print(currentPrice, 2); display.println(" USD"); display.setTextSize(2); display.setCursor(x, y + 50); display.print(differenceInPrice, 2); display.println("%"); display.display(); } else { resetDisplay(); display.setTextSize(1); display.setCursor(0, 0); display.println("Error in HTTP request"); display.display(); } http.end(); } void setup() { display.begin(SSD1306_SWITCHCAPVCC, 0x3C); display.clearDisplay(); display.setTextColor(SSD1306_WHITE); display.setTextSize(1); display.setCursor(0, 0); display.println("Stock Prices Tracker"); display.display(); connectWiFi(); } void loop() { readPrice(0, 0, "AAPL"); delay(3000); display.clearDisplay(); readPrice(0, 0, "AMZN"); delay(3000); display.clearDisplay(); readPrice(0, 0, "TSLA"); delay(3000); display.clearDisplay(); readPrice(0, 0, "MSFT"); delay(3000); readPrice(0, 0, "PFE"); delay(3000); display.clearDisplay(); readPrice(0, 0, "OXY"); delay(3000); display.clearDisplay(); readPrice(0, 0, "EBAY"); delay(3000); display.clearDisplay(); readPrice(0,0, "FDX"); delay(3000); display.clearDisplay(); }

I built it. Nice Job! The parsing of the string from the API is what I really needed help with. I used the value 'differenceInPrice' to write to a green LED on D18 and a red LED on D19 depending on its absolute value since my OLED screen doesn't support different colors of text. Next I'll use a rotary encoder with a system of menus to manually enter the SSID, PW, and stock tickers. Thanks!

@csabalazar8937

3 ай бұрын

Hi, could you pls help me, in order to add 5mm red/green leds? I wanna achieve, IF the price is go down -> there would be a red led on, if it goes up -> there would be a green led on. Also, did you figure out how to screen only BTC/USD price? Seems the API can handle it...

@csabalazar8937

3 ай бұрын

eh Crypto profile is not free in the API. :(

Wow this is awesome bruh 💯💯

@THEELECTRONICGUY

Жыл бұрын

Thank you:)

This is just amazing 💯💯

@THEELECTRONICGUY

Жыл бұрын

Thanks :)

Very interesting. I had a problem trying to do the same, in the sketch I think I was using a different HttpClient library, as it wanted an argument for the constructor, and other differences. Could you please tell me how to use the libraries you used? Thanks.

Great projects , but I get so many problems when I try to upload this sketch to my esp32

@user-jz7jr5rr1c

7 ай бұрын

which error

how can I do this for forex?

How to copy code from your comment?