Let's Control It

Shardan

Hello martinus, for this type of rain sensor a separate MCU is definitely necessary. The capacitive sensor works quite simple. The sensor board builds a capacitor. As water has a far higher dielectric constanc then air (about 80 times..) the capacitance rises when water drops on the sensor surface. ...

Shardan

Please check the Wiki.

There is a detailed description of relay types, advantages, disadvantages and so on.
How to connect relay types and relay boards to ESP-Chips is described in detail.

https://letscontrolit.com/wiki/index.ph ... cs:_Relays

Shardan

I'm using FHEM. Connecting ESPEasy to FHEM is the easiest way: Activate the controller in ESPEasy and the device pops up in FHEM, it's configured automatically. More easy will be difficult. On top FHEM can handle quite a bunch of sensors and actuators, see the commandref page https://fhem.de/command...

Shardan

At first check from a windows PC: - open a CMD windows - enter "nslookup mail.smtp2go.com" [enter] nslookup should show the correct IP adress of the service. If not, there is a problem with DNS in your network. If the nslookup command works, check the DNS settings with the ESP, there might...

Shardan

Gern geschehen

Shardan

Kann sein, dass ein Kabel einen "Wackler" hat - ist bei diesen DuPont-Kabeln leider nicht selten.
Ich bekomme hier beim Testen ähnliche Werte, zweistellig mit Raumlicht und im oberen, vierstelligen,
wenn ich meine Taschenlampe draufhalte - das passt schon.

Shardan

Hallo, Ich habe das grade getestet, Schnellaufbau auf dem Steckbrett. Allerdings mit der letzten Version mega-20200222. Keine Probleme, läuft auf Anhieb. Erster Schritt: Bitte auf die aktuelle Version updaten. Verkabelung genau prüfen, alle anderen I²C Devices abkoppeln. Evtl defekter Sensor? Kannst...

Shardan

Hello again, from the dashboard side: Basically you will need a small computer running the dashboard, no matter which one you chose. I was using FHEM long before i discovered ESPeasy. As I had an existing installation already I stayed with FHEM. Fhem has one nasty disatvantage: It needs really a lot...

Shardan

Hello nez, Hardware isn't too much - relays, ESP-12 E/F/S, power supply and a lot of electronic "chicken seed", says small parts. Of course you'll need the PCB too. The PCB in the pic is the first version, it has a lot of SMD parts at the backside. The newer design has all parts on frontsi...

Shardan

Thank you Thomas for your overview can you explain me what can I use this espeasy software for? is it free? what do i need for this can i manage with my board with 2ch relays with this software through wifi? There's a long thread about relay boards with a MCU chip on it, take a look at https://www....

Shardan

Hello mrwee, some things missing or wrong. The flow sensors (Hall sensors) give pulses, they should be connected to the ESP. If i read the schematic right they are connected to the ADS1115 atm. The transistor at the flow sensor is "wrong direction". The 10KOhm Resistor R3 should be connect...

Shardan

It appears that your relay board expects serial commands from the ESP8266. There are many variations of the module so the exact details can vary. For example, see the last post by ntissm in this old discussion: https://www.letscontrolit.com/forum/viewtopic.php?t=2491#p12159 Although it's just a ran...

Shardan

If the picture shows the board you use exactly I won't use 5V. I can't see any voltage regulator, just some capacitors and resistors. Following datasheet the BMP280 has a max. Vcc of 3,6V! For I²C the datasheet shows this circuit: . BMP280-I2C.jpg . Many modules connect Vdd and Vddio internaly, that...

Shardan

Original thread is 2017..... many things changed since then.

And i'm not sure if a "taskrun,2" works at all...
Can't test or check atm, but the command reference says "taskrun,task-nr,device-nr" if i remember right.

Shardan

Try to add a "taskrun <task/devicenr>" after taskvalueset

Shardan

Using a GPIO to switch on/of the PCF might not work. The PCF8591 uses the I²C-interface. I²C runs an initialization process when the ESP boots up. This init process might run before you can start up the PCF via GPIO. So initializing I²C will not find the PCF in this case. Just an Idea I had when rea...

Shardan

Ooops.. double post, sorry.

Shardan

Hello, several possible ways I think. First and most simple way: Use the output of your FET sensor, decouple via a diode and use a capacitor to get a true DC on your ADC Input. It's same circuit as a simple rectifying in a power supply. A second possibility would be a magnetic transformer on the AC ...

Shardan

A capacitor "slows down" a connection. The capacitor needs a specific amount of time to load or unload, the time depends on the resistor you use. This combination just has a few miliseconds changing time. So if for examples spikes from the mains voltage line come across to your wire - it w...

Shardan

Use an external low pull-up/pull-down Rrsistor, around 10 KOhm.
The internal resistors of ESP are "weak" and due to my experience sometimes not sufficient.

Connect a capacitor of about 47nf...100nF from GPIO to ground (May slow down very fast switchings, usually it has no effects.).

Shardan

What do you mean with "How to power a multiplexer with 3 or 5V?" ?

Nice to hear it works better now.

Shardan

I'd suggest to re-use the removed resistors or new resistors with same value.
Every sensor coil has it's specific value for the burden resistor (or load resistor, same),
so using the original manufacturer value seems best idea to me.

Shardan

Didn't find a schematic but a very informative offer on AliExpress:
https://www.aliexpress.com/item/4000109096239.html

Look at the picture from that offer:

: HW670_DurrentSensor_Output.jpg (40.48 KiB) Viewed 41994 times

.
Sorry to say: That module just amplifies the AC output but does not rectify it.

Shardan

I can't say anything about that module as i don't have any schematics.
Even basic data is missing.. Output DC or AC?
Withhout schematic it's difficult to even say if it is possible to use your SCT's.

Shardan

Honestly I'd be surprised if any standard ADC would be able to handle AC. I'm doing a lot with electronics but never saw an ADC that was able to handle AC directly. May i suggest to take a look at the ESPeasy wiki: https://letscontrolit.com/wiki/index.php?title=Basics:_Analog_to_Digital_Converters I...

Shardan

Nope, that won't work. The two resistors from your circuit will give a huge offset from zero.

Shardan

Did you realize that the SCT-013-030 is a transformer? The output is AC, not DC. The ADS1115 isn't able to work with AC. It will measure at a random point of the sine wave resulting in changing values. The Circuit you showed is made for AC capable sensing. I'd use a bridge rectifier made from Schott...

Shardan

Hello again. First, the circuit looks good to me. I've copied the signal diagram from the MQ-9 datasheet: . MQ-9_Signal.jpg . The upper line is the heating/measuring voltage, the lower one is the output signal. Looking at this diagram I think taking the value at the end of the measurement period sho...

Shardan

The AD input of ESP's works from 0..1 V, dividing this into values from 0..1023. So 0,5V will give an output of 512 from the AD. Further info in my "Basics" at ESPEasy Wiki: https://letscontrolit.com/wiki/index.php?title=Basics:_Analog_to_Digital_Converters I'll try to make up an example. ...

Shardan

A plugin is not really necessary for MQ-7, as far as i can see from the datasheet. Timing can be done with the internal timer commands of ESP. Use a timer for 5V-heating, setting a GPIO to switch to 5V via a transistor. At the end of 5V-heating start a timer for measuring period. The value could be ...

Shardan

According to the picture the board below the ESP-board contains a 8-pin chip. It seems this is a STC15F104, a mcrocontroller unit (mcu) made by ST Micro. I don't have such a module at hand so I just can guess... These mcu's are often used as a serial relay controller located between the ESP and the ...

Shardan

Makes senso for industrial chemical processing for example.
For a fishtanks fertilizer pump it is just a senseless and expensive overhead.

Shardan

Differences between ESP-12F and ESP-07S: - IPEX connector instead of PCB antenna - some fewer pins on ESP-07s (which is no problem as they are not recommended for ESPEasy anyways) Besides this the ESP-07S and ESP-12F are same! Just use an ESP-07S, do NOT use the older ESP-07 as it has 512KB memory o...

Shardan

.. would not open that link.....

Shardan

Hello again, can't say anything about that Wemos board, it is definitely not the classical D1 but an Arduino like version. I don't know if the motor shield works backpacked to this board. The shield was made with Arduino Uno or similar in mind - these have 5V GPIO. The Ali offer just says it can be ...

Shardan

Hello TungstenE2, well, I didn't with ESPeasy, but I've developed such pumps for my former company (we developed fish tanks, pH control, light, heating, analytics etc...) some years ago so I can give you some hints that might be usefull. The type of the pump: Using a stepper isn't really necessary, ...

Shardan

Testing will be lonely when there is no HowTo for flashing...
I gave in meanwhile, didn't get any ESP32 to run.

Shardan

I'd really like some advice how to flash an ESP32.
Sadly I have no clue how to do that.
I could write a wiki about that but at this time my job
takes every minute so I lack time to find out everything by myself.

I've some ESP32-nodeMCUs here waiting......

Shardan

Any usefull "HowTo flash ESp32"? Nothing in the Wiki, afaik.

Shardan

These 8-Relay-boards have a diode in parallel to the relay coil. It's easily visible on the PCB next to the relay. If this diode wouldn't exist the transistor switching the coil just would blow at first power-off of the relay coil. A problem might be caused by the ground connections. Even using opto...

Shardan

Just a very simple idea I had for this purpose. Just pull up the GPIO 16 (Deepsleep) with a 10K resistor - let it sleep until triggered, then run once and get back to sleep. For triggering the reset input can be used with a relay and some addon parts. . Powerloss_detection.jpg . The relay uses the &...

Shardan

No experience with it, but flashing ESPEasy appears to be possible. It has a ESP8265 (1MB) and four solder pads for the serial interface. See PCB photos here: https://fccid.io/2APN5-MINI/Internal-Photos/Internal-Photos-4291787 The bad news is that the photos show that most GPIO pins don't have conv...

Shardan

Hi Sascha, we used electrolytic caps just because they were in the shelf. You may use any 10µf capacitor you have at hand. Just make sure the capacitance is really 10µF, not 10 nF. Just remember that another pullup resistor comes with the ready made levelshifter. 10 KOhm in parallel with your 4,7KOh...

Shardan

Hi Sascha, to my experiences there are no settings needed for high/low on the GPIO's. 4K7 resistor is correct, at least following datasheet. I did some testing with DS18B20 and have a sensor chain running at my company with 5 sensors on a 12 m cable. First, microphone cable did not work for us, it j...

Shardan

Are you talking about inputs or outputs? Switch inputs are limited as an input needs a task - tasks are limited to 12. Up to 12 inputs can be used with two PCF8574 or one MCP23017 (8 port and 16 port IO expanders) Outputs are not limited by tasks as they don't need a task at all, they are just drive...

Shardan

You really think that is a solution for a normal user? Sorry, but if ESPeasy should grow into a business or something alike it needs solutions a normal user can handle. Vagrant in a virtual machine is far away from that. For a normal user the Arduino IDE incl. adding libs and core is near the limits...

Shardan

Hello, Something similar to this will work the best : https://nodemcu-build.com/ User can choose their components and system will provide the image. -D This would be my favorite. There are already such webpages compiling a complete set, even for ESP8266 IoT. A less nice but possible way would be a ...

Shardan

I'm wondering if a Buck/burst converter type might work... A small converter like this: https://www.aliexpress.com/item/32639625554.html?spm=a2g0s.9042311.0.0.27424c4dwlzGg5 Note it has two IC's and can convert up and down. I've checked several powerbanks, these are simply a LiIon or LiPo battery wi...

Shardan

https://www.deltakit.net/product/i2c-rtceprom-board/ https://www.itead.cc/iic-eeprom-and-rtc-module.html https://www.elecrow.com/rtc-eeprom-module-ds3231-at24c32-p-863.html Or from Ali: https://www.aliexpress.com/item/2037934408.html?spm=a2g0o.productlist.0.0.2e5555d2bPBiDV&algo_pvid=7a0f0cbb-7a...

Shardan

The example uses a resistor for the thermistor, not for relay if i see that right. The problem is simple: The PCF8574 outputs use a "constant current" source to pull up to Vcc (5V in your case). The current is limited to 100µA internally, so that's the maximum you can get out of the PCF. T...

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