dgleason wrote: ↑

24 Jun 2019 16:11

I plugged in the wires & power in that order and experienced the same issues. I also tried using a different Arduino, with the same results.

And with the same issue do you mean that is reading 1010 ADC in open air or that it is resetting the Arduino and flashing the LED's?

If I try to plug in the power supply when the USB is not connected, the LEDs on both boards flash about once/second, but do not stay lit. I am not sure if this is normal behavior of the board. I can replicate what you are experiencing when I have the X7 jumper and the 12V power supply connected to ...

dgleason wrote: ↑

19 Jun 2019 23:34

Can the board handle 2A? If so, I'll try a higher current power supply.

Yes, no problem. It needs a minimum of 1A so 2A is fine. Just make sure the DC jack is center positive.

UA_Optimal (λ = 1.00): 304 (λ = 1.00) UR_Optimal: 176 These values are spot on, thank you. I'm concerned that the power source could be part of the problem. I'm using a 12V, 1A wall plug. However, it takes multiple tries of plugging the jack into the board, and removing and replacing the jumper wir...

1. Using the code linked, this is the serial output: Measuring, CJ125: 0x28FF, UA_ADC: 1010, UR_ADC: 179, UBat_ADC: 732, Lambda: -, Oxygen: 20.95% Measuring, CJ125: 0x28FF, UA_ADC: 1011, UR_ADC: 178, UBat_ADC: 735, Lambda: -, Oxygen: 20.95% Measuring, CJ125: 0x28FF, UA_ADC: 1011, UR_ADC: 179, UBat_...

The O2 sensor is in normal, open air, not obstructed, etc. It was purchased from this website along with the lambda board. Very helpful, thank you for your patience. Please help me also with the following information. 1. The serial output from the example code with the set up shown in the picture. ...

I've added the jumper wire. The readings have not changed - the GUI outputs 20.95%, and the serial monitor output looks similar to before: STATUS,2,10495,1010,178,733 Still not getting useful readings. Thank you for the data, it is helpful. Let us analyse your readings: 2 = Heater is in temperature...

When you say "Never connect more than one power source at any time when using this feature", does that mean that I should not plug in the 12V power source to the board and a USB to the Arduino/computer at the same time? If so, how can I use the GUI while the sensor is powered? Sorry that ...

My sensor is powered by a 1Amp, 12v wall power source, and the Arduino is powered with a USB connected to the computer. The Arduino and the Bosch CJ125 controller are both powered by a common 5V. So if we do not use the built in 5V voltage regulator of the Arduino it will instead use the 5V from th...

Yes, the output does not change at all when breathed on. The Arduino file works just fine - but the values it reads while in open air are around 26%. This would make sense as to why the GUI isn’t outputting correctly. Do you think the sensor is reading accurately? 26% seems very high for ambient ai...