#include #include #include #include String url = "http://151.217.19.22/api/panel/numeric"; WiFiClient client; HTTPClient http; void setPanel(int, char); void displaySpeed(float speed) { char buffer[6]; dtostrf(speed, 6, 2, buffer); setPanel(4, buffer[1]); setPanel(3, buffer[2]); setPanel(2, buffer[4]); setPanel(1, buffer[5]); } void setPanel(int panel_id, char value) { http.begin(client, url.c_str()); http.addHeader("Content-Type", "application/json"); String request = "{\"panel_id\":\""; request.concat(panel_id); request.concat("\", \"value\": \""); request.concat(value); request.concat("\"}"); Serial.println(request); http.POST(request); http.end(); }