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Problem with calibration of the WBO2 sensor:firmware 1.1.12
- LCD shows maximum O2% of 16.0% (wbo2_calibration = 0xFF)
- should be near 20.9% but is 16.0%
- Sensor is a LSU4 sensor from the webshop
Other calibration steps were perfect:
- Pump zero DC voltage = 0V (measured between pin 5 and 6)
- Pump PID nernst target; between pin 5 and ground = 4V
- Pump PID nernst target; between pin 5 and pin 1 = 0.45V
Relevant config
wbo2_warmup_ramp=A0
wbo2_abs_limit=00
wbo2_limit_maxt=A0
wbo2_fallback=60
wbo2_retry_t=06
wbo2_ri_target=96
wbo2_nernstdc_target=89
wbo2_pump_pw_zero=64
wbo2_calibration=DA
wbo2_heater_pid_kp=45
wbo2_heater_pid_ki=11
wbo2_heater_pid_kd=1A
wbo2_heater_pid_ilimit=81
wbo2_pump_pid_kp=15
wbo2_pump_pid_ki=4E
wbo2_pump_pid_kd=00
wbo2_pump_pid_ilimit=FF
wbo2_ri_confidence_scale=80