Let's Control It

Shardan

I am looking for a cheap solution to measure moisture level on some of my precious plants, and also in the garde (so I can turn on the sprinklers). The Wiki mentions one supported device, but at $13 it is not cheap. On the website of one of our Chinese shops, I find this one: https://www.banggood.c...

Shardan

Happy to help :) But why 2 transistors for a level shifter if you can do with one? https://letscontrolit.com/wiki/index.php/Level_Converter In that wiki you'll find described this circuit: https://letscontrolit.com/wiki/index.php/File:Level-Converter_Inside.jpg It's a bidirectional level shifter jus...

Shardan

Hi dave, Power: The datasheet for the Neopixel LEDs (Technically a WS2812B led, datasheeet from https://www.parallax.com/downloads/ws2812b-rgb-led-datasheet ) says 3,7 ... 5,3V for driving the neopixel leds. So far the theory. For my purposes I use 5V as VCC and a level shifter up to 5V for driving ...

Shardan

Hello. Basically you can flash every ESP8266/8285 with ESPEasy. As this is a low voltage module it should be possible to flash them directly, there is no mains voltage. Due to my experiences I'd prefer to use a really stable and clean external 3.3V-source for flashing. It avoids some unwelcome troub...

Shardan

As I wrote before - i gave in with the GP2Y10. It is made for air cleaners so it gives just a general value. I never was able to relate the value to the values of a PMS-sensor. The PMSx003 is quite similiar to the SDS011 you use. The manufacurer says it is precalibrated... well, I'd like to check th...

Shardan

Which parameters does that command use?
With Wiki it exists only inside the "Raw List" without any further documentation.

Regards
Shardan

Shardan

@Shardan: frequency was my initial suspect, however there is no cmd I can find to change the freq, also tried various lowee values. Funny thing is it works with leds, just not servos. Anyone has the pca9685 working with servos? Cheers, Ken Servo's need around 50Hz (20 ms pulse-to-pulse), which migh...

Shardan

Not all GPIO pins are equal. Some are more equal than others ;) GPIO 0 is one of those special pins and pin 15 (you tested) is also different regarding the internal Pull-up resistors. Start read here: https://tttapa.github.io/ESP8266/Chap04%20-%20Microcontroller.html GPIO on PCA9685? It might be a ...

Shardan

How much is "Very"? I have some remotes using PCF8574 and it usually takes about a second until the push is received. As fas as i know there is no INT with the PCF-plugin so there is no hardware connection for INT. At this time I'm assembling some new remotes with the MCP23017. I'm not sur...

Shardan

But then the question is: How to waterproof your sensor for a pH far from neutral? :0 Or do you just measure the glass containing the concentration? No problem. pH-probes are cabled sensors so the electronics can be somewhat distant to the probe itself. Electronics should be mounted in a IP65 water...

Shardan

A word about temperatur compensation with pH probes. Some basics: Usually it is said that pH probes should be calibrated with buffer solutions at 25°C. This is not really correct, it is just the usual compromise so the buffer solutions are made for use at 25°C. Beware: Buffer solutions vary their pH...

Shardan

Maybe take a look at the "MiniProExtender".

It's an Arduino Nano used as a GPIO Extender for ESPeasy.
https://github.com/letscontrolit/ESPEas ... roExtender

Shardan

Maybe this might help:

http://www.btnode.ethz.ch/static_docs/d ... Codes.html

Due to that list: 0x11 = Unsupported Feature or Parameter Value

I don't use the RasPi nowadays so i can't say much.

Shardan

That's correct. The ESP8266 datasheet sadly doesn't say anything about ADC imput impedance. It just gives a maximum currant for this pin of 50nA. As the max. voltage is 1V, Ohm's law gives a resistance of 20 MOhm for the ADC pin, i assume it's even more. So a voltage divider made of 5 MOhm / 1 MOhm ...

Shardan

Have fun

Looking forward to see the result.

Shardan

Uhhhhm..... :oops: As i'm living 2nd floor and my 3 m² balcony is my garden I don't have any watering devices. As far as I can see from the GARDENA website they sell tap connectors for both sizes 1/2 and 3/4 inch. So I'd say it depends a bit on the water flow. Most 1/2 inch flow sensors go up to 30 ...

Shardan

It needs a bit more info. Please can you give a schematic? Are you using a "naked" ESP8266 or a nodeMCU / WeMOS? Maybe a hint: The ADC built into the ESP uses 10 bits over a range of 0...1 V. 10 bits gives 1024 output steps from 0 to 1023. So one outupt step from ADC equals a voltage of 0,...

Shardan

Welcome aboard.

Warning: you may get addicted to this software ....

Shardan

Search for "solenoid valve 12V" gives a lot of results, starting around 3€. One exampe: https://de.aliexpress.com/store/product/1pc-New-Electric-Solenoid-Valve-Magnetic-DC-12V-N-C-Water-Air-Inlet-Flow-Switch-1/1305558_32666183967.html?spm=a2g0x.search0104.3.29.71672892QrsBl7&ws_ab_test...

Shardan

I'm not the software guy either. But for a start read the howto about self compiling a bin-file: https://letscontrolit.com/wiki/index.php/Tutorial_building_and_uploading_with_platformio Please be aware that the plugins from the plugin playground are more or less orphaned sometimes and may lead into ...

Shardan

Please try to enter an IP address so we can see if the ntp or the DNS resolving is the point. Make sure that your router passes NTP requests to the internet. You can find valid ntp addresses with nslookup: - open a shell (Linux) or a CMD windows (Windows). - enter nslookup de.pool.ntp.org You'll get...

Shardan

It seems there is a bug..

https://github.com/letscontrolit/ESPEasy/issues/1575

https://github.com/letscontrolit/ESPEasy/issues/1518

Shardan

Does it work if you enter the IP address of the NTP server you use? If not there is a problem with Mega. Does your device use DHCP (no IP for the device set within the config)? If so, check that your DHCP server gives a valid address for NTP. I use a static IP address, with 20+ ESP units there is n...

Shardan

Does it work if you enter the IP address of the NTP server you use?

If not there is a problem with Mega.

Does your device use DHCP (no IP for the device set within the config)?
If so, check that your DHCP server gives a valid address for NTP.

Shardan

As far as i know it is not supported at this time.

You may open a request on github at https://github.com/letscontrolit/ESPEasy/issues

Regards
Shardan

Shardan

Try to add a capacitor of about 22...47µf to +3.3V and Gnd as near to the DS18B20 as possible.

Shardan

As the flow sensors are cheap nowadays how's about using two of them?
One for fillup ond one for draining?

Just an idea i got while reading the post.

Shardan

Very first check: Power the SR-501 with 5V. Put a 10 KOhm resistor from 3.3V to the output pin of the SR-501. Use a voltmeter / multimeter - or if you have one an oscilloskope - connected from the SR-501 output to gnd. Check if you get a reliable reaction on the voltmeter. It should show near 0 V if...

Shardan

Oooops...
missed that over my unwanted hiatus, sorry

Shardan

Maybe have a look here:

https://github.com/sekdiy/FlowMeter/wiki/Sensors

Regards
Shardan

Shardan

Did you refresh the module page? The PIR sensors are technically handled as a switch. The output on the module page is static, so you have to refresh. Suggestion: Try monitoring the serial, this is much easier for testing PIR. Another reason might be the setting of the SR-501 (Sensivity and jumper)....

Shardan

It is a somewhat specific problem with ESP-01: There is a mess of versions, all called ESP-01. (V.1, V.2, V.3, ESP-01S and maybe more) The types differ a bit with their internal circuits, some have pull-ups other versions miss and so on. For my own circuits I tend to use external pullup resistors an...

Shardan

Can you test an older firmware like the R120 or R147?
Just to see if it is a problem with hardware or with software.

I've tested the setup in the wiki for several days without problem before publishing it with a Mega version, but that's a while ago.

Shardan

Welcome aboard.

Watch out it's addictive.....

Shardan

Welcome aboard

Shardan

Before somebody gets mislead again:

PCF8574 is a pure GPIO expander and does not do PWM!
If you want to gnerate PWM with an external chip, use the PCA 9685.
As mentioned in github a while ago it is supported but needs some improvement.

Regards
Shardan

Shardan

Hello, I think this sensor is not the most suitable choice for counting short pulses - they are made for room lighting or sunlight measurement. The internal data processing and converting to I²C takes up some time on top, sensors like BH1750 and TLS2561 are somewhat slow anyways. A better way might ...

Shardan

fhem has an absence check for ESPEasy devices. If a device does not send data for a defined time fhem assumes it is absent. There are two possible ways to handle this with fhem: fhem's ESPEasy interface gives two parameters for every device, one is the time threshold - after this time a device is ca...

Shardan

I'm still in the office and don't have a module at hands. The yellow pins are the additional input/output pins, the 9th pin might be a ground pin, i have to check that myself. The four pins left and right are identical, yes. You can chain max. 8 of these modules by just plugging one module to the ot...

Shardan

For some Clarification: ESPEasy uses GPIO1 and GPIO3 as serial communication port by default . This says that serial communication is enabled in a fresh installation of ESPEasy and GPIO 1+3 can not be used as In/Out by default ! If you want to use them you have to deactivate the serial port in the E...

Shardan

For short:
At this time there is no support for Alexa, Siri & co.

Well, no direct support.
It might be possible to use a home controller like domoticz or fhem for that.
The FHEM server has a developing support for alexa at least, other systems might have too, i don't know.

Shardan

Technically: The "private" IP addresses like 192.168.xxx.yyy are "non-routeable" by definition. Most usual routers, even home routers, follow these definitions. It is possible to reach such an adress from the outside but that's a tricky thing and needs some knowledge about routin...

Shardan

Thank you for your reply. Sorry, I am very new to this. What does it mean : Usually they use a CP2102 (little square chip) or a CH340G (rectangle chip) as an UART. Is it a special cable? Thank you. These are the UART chips on the nodeMCU. You should know the chip type as not all windows versions do...

Shardan

A node MCU? It has flashing adapter on board so I'm not sure if an external UART will work at all or not as the internal UART might block it. You may just use an USB cable to flash a nodeMCU. Usually they use a CP2102 (little square chip) or a CH340G (rectangle chip) as an UART. That works quite wel...

Shardan

Nope, no I²C.

I took a look into the datasheet.
Following the diagrams It seems to be a unidirectional serial data transmission with an external clock signal,

Shardan

Hm... Did you mix up PCF8574 and PCA9685? PCF8574 is a GPIO extender. It can do most things similar to the ESP's GPIOs, trigger a pulse of given length, set to on or off and so on. It can be used as an input too. PCA9685 is a PWM (Pulse width modulation) driver chip for LED's and PWM driven servos. ...

Shardan

Really that is interesting. The Mega .bin file is bigger then 512 kb so it is not suitable for 512kb ESP's. I'm not sure how it can be possible to upload it to a 512KB chip. Remember the progger will not report any error as it does not get a readback from the ESP. The message that the ESP was flashe...

Shardan

Definitely. Anyways, there should be a filter for smoke and such. I've bought a simple CO sensor for about 6€ (Complete wall mount sensor). It most likely works with the SnO²-sensor method, an electrochemical sensor is no way for that price. That sensor is not affected by smoke! I'm wondering if i s...

Shardan

How about the Figaro TGS5042? Quite more expensive than the MQ types, but I believe these are also used in industrial detectors, so I'm guessing they are more reliable? Found one under 15 Euro at AliExpress: https://nl.aliexpress.com/item/TGS5042-FIAGOR-GAS-SENSOR-GAS-detector-100-original/32346860...

Shardan

On top the usual sensors are unreliable. I'm just running some testing with the usual MQ-7 and MQ-9 sensors. They seem to work, basically. But they are extremely sensitive to smoke, far more sensitive then to CO. Using them in a room were one single cigaret was burning the sensor showed nearly full ...

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