sorry forgfet to mention the oscilatoor is also 8Mhz ;)

Hello Christian, I'm getting very phantom readings, nothing connected to the inputs but spikes up to 100% on both channels... What can cause this behaviour? I just used an 8Mhz prescaler: //Define parameters used. #define SPU_SET_PRESCALAR_8MHz 0b01000110 /* 8MHz prescalar with SDO active. */ #defin...

Like you said;10bits...
Do the math the difference is nearly nothing, a couple of microvolts.
5/1024 = 4.883mV
5/1023 = 4.888mV

Its a custom board with atmega328 and wideband in one small package.

The heater is not inversed double checked.

Grtz,
K

Hi Christian, Vacation and other stuff stopped me of further investigation. The sensor heats and operates correctly on a 14p7 controller. Swapped sensor out just in case-off, no change. Now I cant seem to output anymore serial debug neither! Would you mind sharing my tested sketch on your bord? Thx!

With those 2 values in the sketch, the led now keeps blinking “heating cycle” and never quit

No serial print screen on this pc I changed: -some pins as I"m using a arduino nano. -analog ouput has been scaled from 1V to 5V Grts /* Example code compatible with the Lambda Shield for Arduino. Copyright (C) 2017 - 2020 Bylund Automotive AB. This program is free software: you can redistribut...

Hi Christian,

Uhh, the comments/replies from yesterday are gone?!

Anyway the value has been set on 175 in the sketch,like you said in another topic.(ruling out the SPI part)

The strange thing is the leds indicate heating is done, but serial keeps indicating heating...

Thx,
Kevin

You said previously to change the optimal ADC-ur value to 175 in the sketch without SPI commands.

Gr,
Kevin

Hi Christian, Continueing on this topic, our board is heating just fine. Leds blinks until hot, and goes solid=heating cycle done. However; -the sensor is hot(good) -the analog output is still in pwm 1s/2.5V(strange) -serial debug indicates sensor is still heating and never seems to switch to measur...