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Hardware-BLITZWOLF-BW-SHP2.md

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BLITZWOLF BW-SHP2

BLITZWOLF BW-SHP2

Property Value
Manufacturer BlitzWolf
Product page BlitzWolf Link
AliExpress Link
Banggood Link
Wiki page
Build flag BLITZWOLF_BWSHP2

Introduction

  • Rated voltage: AC 110-240V
  • Rated current: 16A (3840W)
  • Product size: L5.08 x W7.62

Flashing (for Revision lower than V2.3)

NOTE: Relay only works when powered trough 200v, with the 3.3V from the uart-usb converter it won't trigger.

Open the device using special tools (the Xiaomi Wiha 24-in-1 toolkit has it):

BlitzWolf BW-SHP2 shell

BlitzWolf BW-SHP2 board

Short GPIO0 and GND during boot to enter flash mode before connecting to the serial programmer. The power indicator LED will be strong red to confirm the device has entered this mode. As soon as the short is removed, the red color will be dimmed. The device will then be ready for flashing.

BlitzWolf BW-SHP2 flashing circuit

BlitzWolf BW-SHP2 flashing circuit

Flashing (another method)

@pilzandreas sent a clever way to flash this device and compatible ones (check xoseperez/espurna#1238)

BlitzWolf BW-SHP2 flash alternative

  1. pins: 
    DTR - nc
RX - orange
TX - yellow
VCC - green
CTS - nc
GND - brown
  2. splitting GND (brown) to blue and black cable
  3. blue - GND (from splitter pin)
  4. orange - RX
  5. green - VCC
  6. low - TX
  7. tip with black (from splitter pin) on boot to init flash mode - note: there is one free pin betw(7) (6) and 1. even if it seems the black wire would be connected the pin next to (6) - its just hanging loosely on my photo.

You will find these power plugs being sold under various labels - i bought a pack of 4 and another with 2 labeld TFLAG (ASIN B07D2Z3YVM) and TECKIN (ASIN B07D5V139R).

Using windows flashing the compiled images offered here worked well doing:

  • (reboot, short (7) with black, red light dims as you release the pin)
  • esptool.py --port COM8 erase_flash
  • (reboot, short (7) with black, red light dims as you release the pin)
  • esptool.py --port COM8 write_flash --flash_mode dout 0x00000 espurna-1.13.1-blitzwolf-bwshp2.bin
  • (reboot)
  • connect wifi to test 'espurna_xxxxx' pw fibonacci
  • browse to http://192.168.4.1 (admin/fibonacci)
  • logged in

Flashing (for Revision V2.3)

For now give a look at the descriptions at Sonoff-Tasmota Wiki: https://github.com/arendst/Sonoff-Tasmota/wiki/Gosund-SP1#new-hardware-revision