arduino - Wemos D1 mini freezing afer a few minutes -


i´m using wemos d1 mini board control rgb led strip , programmed simple code arduino ide. wemos conects internet fine , ip adress can change rgb values of strip. works after few minutes board freezes , nothing works. after reset works again.

i conected simple circuit board controle rgb-led strip few transistors nothing should cause issue , if conect nothing board problem occurs.

i tested example wemos library there same problem. here code used (and sorry if code isn´t programmed i´m beginner ;)):

#include <esp8266wifi.h>  const char* ssid = "my ssid";  const char* pass = "my password";   void setup() {   pinmode(d1, output);   pinmode(d2, output);   pinmode(d5, output);    wifi.begin(ssid, pass);   while (wifi.status() != wl_connected) delay(500);    serial.begin(9600);   //serial.println(wifi.localip());   server.begin(); } void setcolor(string rgb) {   string rgb_val = rgb.substring(4, rgb.lastindexof('h'));   string red_val = rgb_val.substring(1,rgb_val.indexof(':'));   string green_val = rgb_val.substring(rgb_val.indexof(':') + 1,rgb_val.indexof(':',rgb_val.indexof(':') + 1));   string blue_val = rgb_val.substring(rgb_val.lastindexof(':') + 1);   int redval = red_val.toint();   int greenval = green_val.toint();   int blueval = blue_val.toint();   analogwrite(d5, redval);   analogwrite(d2, greenval);   analogwrite(d1, blueval);    redval = redval >= 1023 ? 1023 : redval <= 0 ? 0 : redval;   if (redval == 0)     analogwrite(d5, 0);    greenval = greenval >= 1023 ? 1023 : greenval <= 0 ? 0 : greenval;   if (greenval == 0)     analogwrite(d1, 0);    blueval = blueval >= 1023 ? 1023 : blueval <= 0 ? 0 : blueval;   if (blueval == 0)     analogwrite(d2, 0);    return; }  void loop() {   wificlient client = server.available();   if (!client) return;    while (!client.available()) delay(1);    string request = client.readstringuntil('\r');   client.flush();    //serial.print(request);   setcolor(request);   client.stop();     client.print("http/1.1 200 ok\r\n");   client.flush();   return; }

is there know have done wrong?


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