New hardware revision v2.3 BlitzWolf® BW-SHP2

[aritmeester]

My new BW-SHP2 just arrived and it seems I have gotten a new hardware revision. I managed to flash Tasmota on it but it does not work with the default BW-SPH2 module type.
I switched to generic board and was able to use the relay on GPIO14. I didn't get the other functions working (power monitoring, button, led).

Any help to get it working completely is appreciated!

[ascillato]

Please,

Find which gpios are connected to buttons, leds, power monitoring and also which power monitoring chip it uses.

Then modify the sonoff_template.h with your findings to test your device.

Thanks

[ascillato2]

Closing this issue as it has been answered.

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[AugustH]

Goland SP1 V2.3 seems to be a clone
#4297

[AugustH]

Why is this closed? needs change/additional entry in sonoff_template.h -- see #4297

[aritmeester]

I can confirm this unit working perfectly on the Teckin module type

[Roxxor91]

I just flashed it with the standard tasmota firmware. First I was able to get the hotspot functionality. (Not sure if this was default, or I entered it successfully with 4 button presses.) Now it doesnt connect, maybe I entered something wrongly. I now want to reconfigure, but Im not able to enter hotspot mode via 4 button presses. Does this mean the button doesnt work and I have to reflash? I already removed all wires -_-

[R-Guhr]

Hardware button is not working! Tasmota v6.3.0, BlitzWolf BW-SHP2 v2.3 (Teckin)

[Soulguard]

Same here at Gosund SP1 v2.3. All works, except the hardware button and the LED is constantly slow flashing in red regardless the plug is switched on or off.

[AugustH]

which version did you flash? just checked the nightly (Sonoff-Tasmota 6.3.0.14) from
http://thehackbox.org/tasmota/
with Konfiguration: 55 Gosund SP1 v23

[Soulguard]

thank you very much AugustH, i had flashed 6.3.0. now with 6.3.0.14 the device works as expected. Hardware Button works, LED is blue now (properly configuring MQTT stops slowly flashing LED) Great work!

[kbhuinfo]

Teckin working for me as well.

[Silencer80]

I´ve just flashed tasmota to 4 Gosund SP1 v24. This one has Screws too and is not glued together like the current Teckins. Pins/Layout seems equal to v23. I´ll test the newest nightly this afternoon and will post here, if everything works as expected.

Edit: Works as expected with config "52 Teckin" with latest stable.

[naeramarth7]

Running latest tasmota firmware (v6.4.1), the button works for me using the "Gosund SP1 v23 (55)" config.

[vb0]

I have a V2.4 that looks just like the pictures here, with a date from 201811. Works fine with "Gosund SP1 v23 (55)" /6.4.1 too.

[SimoneBnc]

I got 2 v2.4 SHP2 and it works like the v2.3. Has anyone measured how accurate is the voltage reading? Mine is 10v below what I measured with a true rms multimeter.

[vb0]

Mine shows 240-241, the (really nice MTX-3282) multimeter shows about 234.5. What shocked me is that the BW will not change with the temperature (no more than the usual 1-2V noise)! And I mean even after I left it at -10C or something it was still showing the same. I was thinking because it heats itself so it's never too cold inside (actually this is a problem for many thermostats that are built in a similar form factor and always powered) but I left it un-powered for a long time and then when powered from the first reading it was showing about the same. So probably it can be re-calibrated in software and it'll show better values.

[riston]

I received also newer version BlitzWolf v2.4 and when using Gosound SP1 module type it's working great after calibration voltage is off by +-2V(mostly 1).

[paucoma]

Hi All,
I recieved mine (v2.4) opened it up and traced the board to create this schematic. Not Tested yet! but I'm pretty sure its right.
In summary ESP pinout is the following :
-IO1 | sink LED1 blue [out] | U0TXD
-IO3 | active low K1 (pushbutton) [in] | U0RXD
-IO4 | CF (BL0937) [in] | GPIO4
-IO5 | CF1 (BL0937) [in] | GPIO5
-IO12 | SEL (BL0937) [out] | MTDI
-IO13 | sink LED1 red [out] | MTCK
-IO14 | source RL2 relay [out] | MTMS
-RST | not connected | EXT_RSTB?
-AD | not connected | TOUT

Cheers,
Pau
sch_BW-SHP2_(SP1-C_V2.4).pdf

[scasic]

What are modes of button LED? When it should blink and with which color?
Mine:
MQTT enabled, power is OFF - blinking BLUE
MQTT enabled, power is ON - blinking RED/BLUE
MQTT disabled, power is OFF - no light
MQTT disabled, power in ON - solid red

Is it correct behavior?

[mariantr]

I successfully flashed a BW-SPH2 with latest Tasmota, but after that the led slowly blinks red and the device does not connect to wifi (pre-configured SSID and password in config before flashing) and the button is not working
Anyone has any idea how to fix this?

[SimoneBnc]

Start by reading the serial debug and look for what's going on

[miklos-szel]

Since SHP2 is one of those Tuya based devices this OTA Tasmota installation method worked just fine:
https://github.com/ct-Open-Source/tuya-convert
The tuya-convert has a built in Tasmota v6.5.0 basic(but you can define any firmware during the install), remember, that basic version doesn't come with homeassistant auto discovery support, but Tasmota OTA works as expected.

[shady2k]

I received also newer version BlitzWolf v2.4 and when using Gosound SP1 module type it's working great after calibration voltage is off by +-2V(mostly 1).

@riston , How do you calibrate it? Are you convert data on server side?

[sorianonet]

hi,
i've broken the IO0. is there another way to find it and enter in programmer mode?

[Notrial]

What are modes of button LED? When it should blink and with which color?
Mine:
MQTT enabled, power is OFF - blinking BLUE
MQTT enabled, power is ON - blinking RED/BLUE
MQTT disabled, power is OFF - no light
MQTT disabled, power in ON - solid red

Is it correct behavior?

Did you by any chance figure out how to modify this? I have same led patterns.
Can we disable the leds altogether?

[AugustH]

you could create a template without the leds

[atico45]

Good afternoon, I have been able to flash this device through OTA but I do not know how to link it to the homeassistant I have done it through Mqtt, there is another hole.
Thanks and sorry for not knowing English, this is from the google translate

[SimoneBnc]

It's written in the home assistant documentation, just enable the autodiscover in tasmota

[atico45]

Ok, gracias