SP1: very attractive universal multi-company smart plug with energy monitor!

[knopserl]

Hi, I have found a very interesting universal smart power plug called SP1. This hase a very good rating and is available from many companies based on a base product SP1. You can find it easily in the web or on Amzon and it's offered from many companies like: Gosund, Homeplug, Coosa etc. It's always the same product and same PCB, I have opened it and soldered power and RX/TX and read the chip id: It's a ESP8266EX with 1M flash and it uses the Smart Life app and a Chinese cloud.
It offers switch and power meter. Unfortunatly it has an energy meter chip labeled (3 lines) which you don't find in the web: HJL-01, J1749CYH, D797480E. Based on the parts around and wiring, I guess its a HLW8012.
It would be extremly attractive to get that working with espurna (might require some reverse engineering) but I'll try it but would be nice if I could get some help to get faster to a result.
Here some links and pictures from inside the plug:

http://www.gosund.com/index.php?m=content&c=index&a=show&catid=6&id=5
https://www.amazon.de/Steckdose-Homecube-intelligente-Verbrauchsanzeige-funktioniert/dp/B076Q2LKHG
https://www.amazon.de/intelligente-COOSA-Stromverbrauch-funktioniert-Fernsteurung/dp/B077RTJJH1/ref=sr_1_1?s=diy&ie=UTF8&qid=1522268132&sr=1-1&keywords=coosa
US version is SP2 (I guess same electronics PCB)
https://www.amazon.com/COOSA-Monitoring-Function-Campatible-Assiatant/dp/B0788W9TDR/ref=sr_1_fkmr0_3?s=hi&ie=UTF8&qid=1522267864&sr=1-3-fkmr0&keywords=coosa+SP1

[gn0st1c]

that is definitely HLW8012

CURRENT_RESISTOR and VOLTAGE_RESISTOR_DOWNSTREAM values already matches with espurna's default.

you should follow the VOLTAGE_RESISTOR_UPSTREAM resistors.

[knopserl]

Nice that you confirm that. I have build and uploaded a new firmware called SP1. No I have the problem, that the WiFi works, but no relay, LED and energy monitor because I don't know at all which pins are used at the ESP8266EX. There is not descripting on the board (beside 3.3V, GND, RX, TX and IO0). SO I would need endless build attempts. It would be great if the pins could be soft configured via EEPROM. I have created a new issue for that. Do you think that can work or do you have any othe hint which helps to speed up or is effective?

[gn0st1c]

@knopserl : (for your pins image)
right pins top to bottom: en, 14, 13, 0, 4, RX(3), 3v3
left pins top to bottom: tout, 12, 15, 2, 5, TX, gnd

[knopserl]

@gn0st1c : you are incrediable and saved me a lot of time! My idea whould have been to write a sketch to set/read all the ports and and measure the signal at the PCB pinout using the serial line for manual interaction. How do you know that pinout? Do you know the PCB or do you have an SP1 or what magic have you applied?
I'll now try to find out how the pins are connected to the relay, the red/blue LED, the push button and the three HLW8012 connection and will set then the proper HW pinouts in the espurna project. If that works, you are my hero and we have a new popular device supported by espurna!

[gn0st1c]

@knopserl :
i know the pins because i've met this esp several times before :)
this may also help you; gpio via Terminal

---

i'm sure you already know these but;

button: check if one of the pins is connected to gnd or vcc. (there may also be a resistor for pull-up/down. this is important for definitions like BUTTON_DEFAULT_HIGH, BUTTON_SET_PULLUP
). trace the remaining pin.

led: again check for gnd or vcc, trace the remaining pin. (there is most surely a current limiting resistor for the led)

relay: there is surely a flyback diode in parallel to relay pins. trace it back to the transistor and transistor to esp. (there is most surely a current limiting resistor for the transistor)

[knopserl]

@gn0st1c : You're totaly right with your hints. I'm a big step further, but still need some more help, so please be a bit more patient with me :-)

I think I have found out the pins and their functions.
I have updated the pins definition in hardware.h and uploaded the new firmware.
Something is now working a couple of things not.
I can remotely (via the Web) switch on/off the relay and the LED red is on/off. But I cannot switch the relay using the physical pin. Also the power meter does not show any value (GPIO 12, 5, 14).
If I press the button long, then it does a reset and starts again the AP. So I guess the button pin is correct but I can't switch on manuall (which I think should work right?)

Here are the setting in hardware.h I'm using:
#elif defined(SP1)

// Info
#define MANUFACTURER        "Homecube"
#define DEVICE              "SP1"

// Buttons
#define BUTTON1_PIN         13
#define BUTTON1_MODE        BUTTON_PUSHBUTTON | BUTTON_DEFAULT_HIGH
#define BUTTON1_RELAY       2

// Relays
#define RELAY1_PIN          15
#define RELAY1_TYPE         RELAY_TYPE_NORMAL

// LEDs
#define LED1_PIN            0
#define LED1_PIN_INVERSE    2

// HLW8012
#ifndef HLW8012_SUPPORT
#define HLW8012_SUPPORT     1
#endif
#define HLW8012_SEL_PIN     12
#define HLW8012_CF1_PIN     14
#define HLW8012_CF_PIN      5

#define HLW8012_VOLTAGE_R_UP            ( 2 * 1000000 )  // Upstream voltage resistor

and here the updated pin picture

thanks a lot in advance
Heinz

[gn0st1c]

it seems only setting BUTTON1_RELAY to 1 should fix your problems. (you have 1 button and 1 relay)

[knopserl]

@gn0st1c you are just fantastic! The button on/off works now and I did an OTA updload/upgrade.
Now I need your help to solve the power meter issue and I'm happy and a new espurna devive is born.
Any hints? Could it be, that the pins are still wrong numbered (so far most pins you speficed are correct), only the there SEL, CF, CF1 might not fit. I will verify a third time. I'm also 90% sure that the chip is a HLW8012 but could it be that it is another chip with 8 pins with similar schematic?

[knopserl]

accidently closed the issue, sorry

[gn0st1c]

@knopserl :
just make sure you got the pins right. (right of the IC, top to bottom = SEL, CF1, CF, GND)

also here is the data sheet for your ESP8266 (S3)
ESP8266-S3.pdf

[knopserl]

@gn0st1c : here is the screenshot of the web interface, it shows some values but they are nonsens. I have connected a LED lamp with 0,1A and voltage is 230V.
I have checks the pinout of the HLW8012. This is what I excactly did.
I double checked again and pins 8,7,6 on the power meter IC (SEL, CF1, CF) is connected to 12, 14, 5 of the MCU. So I have no moer ideas. Maybe it is another chip, or what else could be?

[gn0st1c]

can you zip and attach your original firmware.bin ?

[knopserl]

yes of course:
SP1-original.zip

It's from that company
https://www.amazon.de/Steckdose-Homecube-intelligente-Verbrauchsanzeige-funktioniert/dp/B076Q2LKHG/ref=sr_1_fkmr0_1?ie=UTF8&qid=1522349887&sr=8-1-fkmr0&keywords=homecube+SP1
which is same like that
https://www.amazon.de/Intelligente-Stromverbrauch-Fernsteurung-Schaltbare-Energieklasse/dp/B076WZQS4S/ref=sr_1_1?ie=UTF8&qid=1522350030&sr=8-1&keywords=gosund+sp1
or that
https://www.amazon.de/intelligente-COOSA-Stromverbrauch-funktioniert-Fernsteurung/dp/B077RTJJH1/ref=sr_1_fkmr0_1?s=diy&ie=UTF8&qid=1522350072&sr=1-1-fkmr0&keywords=coosa+sp1

from where are you? I'm from Austria.