ESP8266 Community Forum

- Mon Aug 10, 2015 11:28 am #25538 Ok... I must correct myself.

After two hours of pinging the NODEMCU board it now shows the same problems like all others. Pings time out, the web server is no longer reachable. And the ESP is getting more than warm.

- Mon Aug 10, 2015 5:24 pm #25591 Did you try an ESP-01, and if yes, was its red LED flickering at any point?

Are you running one of the supplied firmware examples without modification, or modified/custom firmware. What are you asking these poor lil ICs to do, exactly, that might heat'em up?

Mine have never gotten hotter than barely warm.

- Tue Aug 11, 2015 10:28 am #25672 Hi,
I had same problem with my ESP-01 and fw 9.5.Chip becomes very hot! (I cant hold finger more then few seconds on it!).
I flashed 9.2.2 and all works fine, chip is only warm.
I hope this help...
sorry my english...
pptsk

- Tue Aug 11, 2015 1:32 pm #25705 Today i measured the voltage directly at the ESP connector by using a digital oscilloscope.
As I expected the voltage was all times stable at 3.26V. I can't do anything more to my power supply. Now I am running with two 470µF capacitors and one 100nF capacitor. And I also replaced the 10k resistors by 4.7k resistors.

Latest statistics:

Code: Select all--- 192.168.1.207 ping statistics ---
4505 packets transmitted, 2405 received, +558 errors, 46% packet loss, time 2257071ms
rtt min/avg/max/mdev = 2.066/8.727/1067.620/27.723 ms, pipe 7

And this is what my access point thinks about it:

Code: Select all11.08.15   20:25:10   WiFi device has been re-registered. (2,4 GHz), 72 Mbit/s, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05. [5 messages since 11.08.15 20:23:05]
11.08.15   20:21:29   WiFi device has been re-registered. (2,4 GHz), 72 Mbit/s, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05. [33 messages since 11.08.15 19:46:49]
11.08.15   19:46:11   WiFi device switched off (2,4 GHz), 72 Mbit/s, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05.
11.08.15   19:43:36   WiFi device has been re-registered. (2,4 GHz), 72 Mbit/s, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05. [8 messages since 11.08.15 19:40:08]
11.08.15   19:39:28   WiFi device switched off (2,4 GHz), 72 Mbit/s, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05. [2 Meldungen seit 11.08.15 19:38:09]
11.08.15   19:34:03   WiFi device has been re-registered. (2,4 GHz), 72 Mbit/s, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05. [4 messages since 11.08.15 19:32:49]
11.08.15   19:32:36   WiFi device switched off (2,4 GHz), 72 Mbit/s, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05.
11.08.15   19:31:42   WiFi device has been re-registered. (2,4 GHz), 72 Mbit/s, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05. [5 messages since 11.08.15 19:29:36]
11.08.15   19:29:26   WiFi device switched off (2,4 GHz), 72 Mbit/s, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05.
11.08.15   19:27:25   WiFi device has been re-registered. (2,4 GHz), 72 Mbit/s, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05. [2 messages since 11.08.15 19:26:07]
11.08.15   19:25:30   WiFi device switched off (2,4 GHz), 72 Mbit/s, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05.
11.08.15   19:22:43   WiFi device has been re-registered. (2,4 GHz), 72 Mbit/s, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05.
11.08.15   19:22:03   WiFi device switched off (2,4 GHz), 72 Mbit/s, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05.
11.08.15   19:21:41   WiFi device has been re-registered. (2,4 GHz), 72 Mbit/s, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05. [12 messages since 11.08.15 19:16:18]
11.08.15   19:14:11   WiFi device switched off (2,4 GHz), 72 Mbit/s, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05.
11.08.15   19:06:32   WiFi device has been re-registered. (2,4 GHz), 72 Mbit/s, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05. [2 messages since 11.08.15 19:06:27]
11.08.15   19:06:24   WiFi device switched off (2,4 GHz), 72 Mbit/s, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05.
11.08.15   19:03:50   WiFi device will be switched off. (2,4 GHz): WiFi device no longer responding, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05. (#192.168.1.207).
11.08.15   19:03:06   WiFi device has been re-registered. (2,4 GHz), 72 Mbit/s, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05. [9 messages since 11.08.15 18:55:13]
11.08.15   18:54:32   WiFi device switched off (2,4 GHz), 72 Mbit/s, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05.
11.08.15   18:53:50   WiFi device will be switched off. (2,4 GHz): WiFi device no longer responding, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05. (#192.168.1.207).
11.08.15   18:52:35   WiFi device has been re-registered. (2,4 GHz), 72 Mbit/s, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05.
11.08.15   18:51:45   WiFi device switched off (2,4 GHz), 72 Mbit/s, PC-192-168-1-207, IP 192.168.1.207, MAC 18:FE:34:FC:0F:05.

@pptsk:
That's interesting.
Does anybody know how to use the old SDK 0.9.2 withing the Arduino IDE 1.6.5?
I am beginning to guess it is more of a firmware than a hardware problem.

@kenn:
I am using an ESP01 with a 512kB flash chip. And at the moment the flickering is gone.
And the only modification I did to the HelloServer example was entering my SSID/passphrase.

Would anybody be so nice and flash the HelloServer example to an ESP01 with 512kB (using the Arduino 1.6.5 IDE and esp8266 package v1.6.5-947-g...) and after that starting a long run ping session with "ping -i 0.5 <ESPIP>" (on Linux)?