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STAG AFR - another cheap WBO2 controler

Posted: Thu Mar 25, 2021 6:53 pm
by JRD McLAREN
I have STAG AFR module on my board .. (not in car yet)
It is wbo2 controller for Bosch LSU4.9 sensors
Has serial output, two analog 0-1V for narowband and 0-5 for wideband.
Also has narowband emulator.

It has STM8AF6288TC MCU
two MCP604E OP-Amps
two LM2903Y comparators
VN5025AJ highside power switch as heater driver

STAG provide they own application
- AC-AFR for windows
- AFR Mobile for android

Can be connected via TTL serial port or Bluetooth.
Serial speed is 57600,8n1
(my favorite HC-05 work)

Re: STAG AFR - another cheap WBO2 controler

Posted: Thu Mar 25, 2021 6:58 pm
by JRD McLAREN

Re: STAG AFR - another cheap WBO2 controler

Posted: Fri Mar 26, 2021 1:06 am
by JRockland
that is interesting

Might use that for my dyno as I don't have wide band controller..
Will see what the android app look like

Re: STAG AFR - another cheap WBO2 controler

Posted: Fri Mar 26, 2021 10:40 pm
by JRD McLAREN
I have no idea, how you can buy this controller type in CANADA ..
..in Easrtern Europe is no problem ...

.. but ... . . . .. :mrgreen: