Let's Control It

TD-er

I assume you are using some transistor to operate the relais? The output of the ESP is not powerful enough to directly operate the relais. And do you have a diode over the relais? (to protect the rest of the electronics when working with coils) Can you measure the Voltage on the relais coil, with a ...

TD-er

@Domosapiens. Just make sure you don't "reken jezelf rijk" ;) (Dutch for over-estimating things) The power consumption of a pump is quite hard to measure, since its cos-phi is almost never equal to 1. In other words, when measuring with a clamp, you have to take the Voltage into account or...

TD-er

chunter1 wrote: ↑10 Nov 2017, 08:30 [...]
3.3V would not be possible anyway since the MH-Z19 needs at least 3.6V and the MH-Z19B 4.5V.

They do work at 3.3V, but as I said, no idea about the impact on accuracy.

TD-er

These sensors give AC voltage so direct connection to the ESP is not a good idea. Worse, it is ac voltage - so direct rectifying with a diode won't work properly. Even schottky diodes have a voltage loss. You can make it work with a rectifying amplifier (Operational amplifier with diodes) See wikip...

TD-er

Do these sensors output a DC voltage? Or is it AC? (looks AC to me) If AC, then it will be quite hard to measure directly from a ESP chip. I guess you would need some external circuit to sample the AC voltage, determine Vrms and let the ESP then read that value from there. Also a 0..1V signal in AC ...

TD-er

Well it is probably a bit too time consuming (for the CPU) to run a continuous scroll of values. In the OLED1306-library the image has to be rendered before being pushed to the display. So I think (not tried it) there will always be a delay noticeable between updates. Also the rest of the system wil...

TD-er

This SCT013 sensor looks like a clamp sensor. So there will be no big currents through the sensor itself. It is working on induction. According to this link , the current through the sensor itself is 0.05A when the current through the measured line = 100A. However, it looks like a AC sensor, so make...

TD-er

What voltage are you using for the sensors? 3.3V or 5V?
I know the MH-Z19 takes more time to performs the measurement when using a lower voltage.
Perhaps this voltage-/timedifference also affects the accuracy?

TD-er

If communication is tunneled (e.g. via VPN), it may well be the MTU of 1500 is somewhere exceeded.
So lowering it to 1400-something may fix it, but it is an indication of the source of the problems.

TD-er

It is remarkably cheap to create some specified CO2 conditions using chemicals. (given you do it for batches of sensors at once) But the problem being faced here is that the MH-Z19 sensor's baseline calibration will be affected by several parameters like temperature and humidity. Also the automatic ...

TD-er

You should set the 400 base calibration in the same environment, as you normally use. Currently outside is humidity and temperature different from inside use. This will have impact on both sensors and both differently. You can let both sensors perform an automatic base calibration, but then please u...

TD-er

I do not understand all that doing. Before fixing all the known issues, the devs start working on implementing new CPUs like ESP32 and whatever we normal user don't need (yet)! We want a firmware that works without all that bugs! That doing remembers me at Micro$oft, that makes all of us to beta te...

TD-er

If the new sensor has not been running for 24h yet, I would suggest to disable ABC. Then you are using the factory calibration. And running outside is not the best way to reset the baseline. Internally the sensor stores its calibration value along with the temperature. Perhaps to compensate for some...

TD-er

First try the suggestions already mentioned by Shardan.
And then try to twist the wires to the sensor.
Just like the cables in an UTP network cable.
The twists prevent the cable from acting like an antenna and picking up all kinds of interference.

TD-er

Did you also try to disconnect the sensor for a while and then try again? (and/or reboot the ESPeasy)

TD-er

You can also try to log the system value rssi and see if it shows some fluctuation in reception. What Grovkillen is suggesting is also very good for diagnostics. If the module is not reacting to ping, it is an indication the connection is lost. But also it may be the sensor has crashed. Does the sen...

TD-er

Most likely, the sensor with the lowest value has had Auto Baseline Calibration (ABC) enabled, which is the default. If you're running dev-12, I would suggest to disable ABC as soon as possible (within 24h of operation after first usage) Then you keep the factory calibration active. In short, ABC do...

TD-er

In your screenshot, you have the framed version named "BME280" so when you try to address that, it might be [bme280#bla] refers to a non existing variable of the oled framed plugin and not the BME-sensor itself.

TD-er

Judging from the photo, that's not with my changes in the 'framed' plugin. One of the things I changed is the WiFi reception-strength bars. And also there should be a selector for the display type selection (SSD1306/SH1106). This is the 'old' code for the 'framed' plugin :) I thought is was merged, ...

TD-er

Did you also have the BME280 plugin active, but not the chip connected? If so, try to reproduce. The BME280 is also updated by me, so perhaps I made it too aggressively try to find the device without proper timeout. And then the webserver task is no longer responsive. As you can see, the BME280 does...

TD-er

Are you really sure you have the SPI version?
You describe pins for I2C (SDA/SCL)

SPI is using a clk, MISO & MOSI pins and a chip-select line.
I thought the SPI versions had 7 pins: https://www.banggood.com/7Pin-0_96-Inch ... ?rmmds=buy

TD-er

Does this also happen with the Framed version of the plugin? That one is recently updated.
N.B. The Framed version has 12 lines.

TD-er

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.

TD-er

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

TD-er

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, ...

TD-er

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.

TD-er

So we're stuck with it?

TD-er

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...

TD-er

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...

TD-er

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.

TD-er

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...

TD-er

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...

TD-er

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 ...

TD-er

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?

TD-er

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...

TD-er

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...

TD-er

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...

TD-er

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 ...

TD-er

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 ...

TD-er

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 ...

TD-er

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?

TD-er

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...

TD-er

[....] 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...

TD-er

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...

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