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I tryed work to an arduino UNO and NANO, powered by 12 volts from an external source. Arduino serial displays for CJ125_DIAG_REG_REQUEST: 0x28BF. What could be happening?
28BF
0,0,10431,305,872,788,12396
Regards!,
Interesting you made your own. If you don't mind me asking, how come you did not order one from our website?cristian2020 wrote: ↑05 Jun 2020 01:19I manufactured and assembled the lambda shield according to the schematic
That is correct, the GND pin on the MOSFET-driver is connected to common ground.cristian2020 wrote: ↑05 Jun 2020 01:19I have a question about gnd of MCP14E10-E/SN, This must connect to comon GND?
You are getting an error code from the CJ125 controller. The low byte (0xBF) is the diagnostic status register.cristian2020 wrote: ↑05 Jun 2020 01:19I tryed work to an arduino UNO and NANO, powered by 12 volts from an external source. Arduino serial displays for CJ125_DIAG_REG_REQUEST: 0x28BF. What could be happening?
because I need read o2 for urgent project and imports to my country are slow due to the pandemic.Interesting you made your own. If you don't mind me asking, how come you did not order one from our website?
Hi Cristian, the schematics is the originals used for the PCB. Can you make sure when the MOSFET is off you get 0x28FF from the CJ125 with 12V supply? On the original lambda shield HEATER_OUTPUT_PIN (digital pin 5) shall be low until CJ125 DIAG_REG shows CJ125_DIAG_REG_STATUS_OK (0x28FF).cristian2020 wrote: ↑06 Jun 2020 02:29It is rare, I checked the schema over and over again and did it the same as published, I see no difference. The published schema is correct?
Great, problem solved! Have a look at our Lambda Shield 2 on how you can skip the driver completely.cristian2020 wrote: ↑11 Jun 2020 05:31Could it work if I invert the input signal (digital pin 5) mcp14e9 with a transistor?
No that is not normal, your values indicate a cold sensor. This is typical for certain aftermarket sensors. What sensor are you using?
As long as it is a genuine Bosch sensor and not an aftermarket one there should be no issue with he sensor.