I had this same issue with a ESP8266 a few years back.
You can see my solution here:
viewtopic.php?f=16&t=2668#p16457
Search found 11 matches
- Fri Mar 13, 2020 12:42 pm
- Forum: ESP32 boards
- Topic: DHT22 on main.py returns with ETIMEDOUT
- Replies: 8
- Views: 7061
- Sat Nov 09, 2019 3:39 pm
- Forum: ESP8266 boards
- Topic: Counting pulses from an electricity meter
- Replies: 12
- Views: 10577
Re: Counting pulses from an electricity meter
I count pulses using a NodeMCU. It has been running för almost two years with no hickups. The difference is that I use MQTT, I use a comparator to get a digital signal that runs a small interrupt. But, I make all the calculations on the Esp8266 and send totalt energy since boot, energy for the last ...
- Wed Apr 17, 2019 6:50 pm
- Forum: ESP8266 boards
- Topic: [SOLVED] Issues connecting to WLAN after deep sleep
- Replies: 2
- Views: 2827
Re: Issues connecting to WLAN after deep sleep
So I just solved this.
Turns out that if you deactivate the WLAN ( wlan.active(False) ) it is not possible, at least for me, to reconnect to a network after a deep sleep. When I commented out the deactivate, that I had just before entering deep sleep it all works.
Turns out that if you deactivate the WLAN ( wlan.active(False) ) it is not possible, at least for me, to reconnect to a network after a deep sleep. When I commented out the deactivate, that I had just before entering deep sleep it all works.
- Wed Apr 10, 2019 6:50 pm
- Forum: ESP8266 boards
- Topic: [SOLVED] Issues connecting to WLAN after deep sleep
- Replies: 2
- Views: 2827
Re: Issues connecting to WLAN after deep sleep
I have made some more tests with different values for the second parameter of esp.deepsleep(). I've tested 0 (default) and 1 (make RF calibration on wake). But there is no difference.
Havn't anybody experienced this issue? And is it a problem with using wlan.connect(), will it wear out the flash?
Havn't anybody experienced this issue? And is it a problem with using wlan.connect(), will it wear out the flash?
- Sun Apr 07, 2019 8:06 am
- Forum: ESP8266 boards
- Topic: [SOLVED] Issues connecting to WLAN after deep sleep
- Replies: 2
- Views: 2827
[SOLVED] Issues connecting to WLAN after deep sleep
Hi, I'm having an issue with connecting to my WLAN after a deep sleep. I'm using MicroPython v1.10-8-g8b7039d7d on 2019-01-26; ESP module with ESP8266 Since the credentials are stored in flash, all I have to do to reconnect to the last AP should be import network wlan = network.WLAN(network.STA_IF) ...
- Tue Jan 30, 2018 8:08 pm
- Forum: Programs, Libraries and Tools
- Topic: Some problems with asyn library
- Replies: 21
- Views: 17262
Re: asyn events — in basic uasyncio event loop; CPU usage
@pfalcon I understand your concern. I tend to chose my subject wording very carefully. However, this thread indeed took another turn along the way, which may give the wrong impressions about uasyncio on its own. I now changed the subject to attend to your concerns, whilst remaining as correctly inf...
- Wed Dec 14, 2016 5:52 am
- Forum: ESP8266 boards
- Topic: [SOLVED/WORKAROUND]Unable to get DHT22-example to work
- Replies: 6
- Views: 11938
Re: Unable to get DHT22-example to work
I've made a few more discoveries, as you can read in my issue report at Github: https://github.com/micropython/micropython/issues/2651 (forgot to mention it here). To summarize, it seems that it only is the first call to measure() (yeah, I've noticed that it is missing from the methods of DHT22 as w...
- Fri Nov 18, 2016 8:36 pm
- Forum: ESP8266 boards
- Topic: [SOLVED/WORKAROUND]Unable to get DHT22-example to work
- Replies: 6
- Views: 11938
Re: Unable to get DHT22-example to work
Ok, now this is interesting. After adding the DHT code to my main program, that sends the values over MQTT, it stopped working again. If I ran the main.py on boot it would not work, but if I run import main it does...! So I started playing around. And what I have now for this test, is this code in m...
- Fri Nov 18, 2016 7:03 pm
- Forum: ESP8266 boards
- Topic: [SOLVED/WORKAROUND]Unable to get DHT22-example to work
- Replies: 6
- Views: 11938
Re: Unable to get DHT22-example to work
Thanks for you reply. I tested a few other pins, and pin 13 seems to be working, for now. So, at the moment, this works: import machine, dht d = dht.DHT22(machine.Pin(13)) d.measure() d.temperature(), d.humidity() And then I tried pin 4 again, and it works too now. Pin 15 does not work. Well well, l...
- Thu Nov 17, 2016 9:08 pm
- Forum: ESP8266 boards
- Topic: [SOLVED/WORKAROUND]Unable to get DHT22-example to work
- Replies: 6
- Views: 11938
[SOLVED/WORKAROUND]Unable to get DHT22-example to work
Hi, I'm trying to use this code on a NodeMCU board with ESP-12E: import dht import machine import time d = dht.DHT22(machine.Pin(4, machine.Pin.IN, machine.Pin.PULL_UP)) while True: time.sleep(5) d.measure() d.temperature(), d.humidity() But all I get is this error on the d.measure() line: OSError: ...