Does this also happen when you do a clean build?

N.B. I recently (few weeks ago) upgraded the oled library, which has been merged into the mega branch.
Make sure you only have the files present which are in the Github branch and no more. Some files have been renamed between versions of this library.

You could also try to twist the cable.
Just like the cabling in CAT5 ethernet cables.

The "problem" with these small displays is they are using only every other line. For example only the odd or even line numbers (did not check yet which are being used) So it may help if you change the used font. I was already looking into that myself, so likely they will be added for 2.1, ...

Also, how often do you sample the device?
I noticed other sensors like the Bosch BME280 and BMP280 will heat up up-to 2 degrees by only sampling continuously.
I created a pull request to combine these two, but also put them to sleep for almost a minute, which helps a lot in measurement offset.

So we're stuck with it?

Can you install some syslog server in your network where the ESP will send its logs? (Log Settings in the Advanced Settings page under "Tools") Then you can try to add a device in ESP easy to log the network strength. (Device "System Info", Indicator "Wifi RSSI") This l...

I have no personal experience with these Dallas sensors. Does it also happen when only one sensor is being used? The function to set the resolution is only being called when the device is being saved via the web interface. The code suggests the resolution is being stored in the flash on the sensor i...

Since you did some manual calibration yourself, please leave the ABC enabled for a few days to let it reset itself to some sensible levels.

I would advice not to calibrate it yourself. Perhaps have the ABC on (default setting) and let it rest for a day or two in a well ventilated room, or at least a room which is not populated by humans/animals for a longer time. Also make sure your sensor is not exposed to direct sunlight. The sensor o...

I have the same problem. I always get Unstable Reading ... 33093152 : MHZ19: Unstable reading, ignoring! PPM value: 350 Temp/S/U values: 24/0/0.00 I think the wiring isn't the problem as it's really simple. I'm using the latest dev Version from Github. Any tipps? You have the new "B" vers...

How is the relais connected to the ESP module? I hope it is triggered via an optocoupler, or some transistor? And how do you trigger the transistor? Do you have the internal pull-down resistors enabled for all non-connected pins? And what about the pins connected to the transistor? Either pull-down ...

I just added a pull request for this bug: https://github.com/letscontrolit/ESPEasy/pull/519

Only problem is that I do not have these sensor, so it was just changing for what I thought is needed, no testing.
So please if someone can test it?

I'm using 'ESPEasy_v2.0.0-dev12_normal_1024.bin' flashed with an FTDI adapter & 'FlashESP8266.exe'. Is the programmer a original FTDI one or a copy? The newer drivers are making clones/copies garbaging the flash even though it says "ok". What version of the drivers are causing this? A...

Just a small though on size and efficiency... I agree that some plugins are too specific and should be flagged as such and not included in the standard firmware (like it happened with "_P070_NeoPixel_Clock.ino"). But looking at the current supported devices by the standard 2.0.0.dev12 I t...

I also noticed the CO2 level to rise dramatically fast when cooking (on gas). Our kitchen has no door to the living room, so concentration becomes equal in those rooms. (12 + 25 + 10 m^2 in total) Let's say, it is good my CO2 sensor has a range from 400-5000 ppm, since it can spike over 2000 ppm in...

Can you please check if the problem also persists when running with the code change I made in this pull-request? https://github.com/letscontrolit/ESPEasy/pull/481 I changed also the measuring parameters, the init and the reset of the sensor. I had once a similar lock-up, but could not reproduce the ...

A bit easier to read link: https://www.aliexpress.com/store/product/Goouuu-Air200-GPRS-module-text-messages-development-board-GSM-GPRS-wireless-data-transmission-of-super-SIM900A/1735233_32811910839.html It looks like a development board with GPRS and GPS onboard. I do not (yet) see a datasheet. So ...

I also noticed the CO2 level to rise dramatically fast when cooking (on gas). Our kitchen has no door to the living room, so concentration becomes equal in those rooms. (12 + 25 + 10 m^2 in total) Let's say, it is good my CO2 sensor has a range from 400-5000 ppm, since it can spike over 2000 ppm in ...

At a first glance at the datasheet, the protocol looks a lot like the MH-Z19.
Support for that sensor is already present.
It is quite an expensive sensor. What makes it better than the (much smaller) S8 or MH-Z19 sensors?

What is the current status of processing/merging pull requests? The pull requests are piling up here: https://github.com/letscontrolit/ESPEasy/pulls Looking at myself, I do not know when (if?) they will be processed and am somewhat waiting to make some changes until the requests of others are proces...

[....] At least BME280 and Si7021 have a self-heating to recondition the humidity sensor. I can confirm this. The sensors i use all have a deviation of +3 ...+3,5°C. I took a lab thermometer for reference and just subtracted the difference in the formula field. Not a really exact calibration but fo...

I think you will need some external counter which you can read out after some interval. Perhaps even 2 counters, of which one has a known frequency connected to the count input pin. Then you can trigger the "count enable" (after reset count) and after some time trigger both counters to dis...