0_0
Full Member
Posts: 114
Raspberry Pi: Yes
Other Device: PC, Arduino, ESP32
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Post by 0_0 on Oct 30, 2021 3:51:43 GMT -8
Q: What is "Aux State" in the AQI & Aftershock graph?
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Post by doxidad on Nov 2, 2021 4:27:07 GMT -8
The AUX signal is a status from the Mini Pro Plus board. It consists of 3 bits of data Bit 00 = 1 IN3221 (Solar) present, 0 = not present Bit 01 = 1 Sensor is present, 0 = not present Sensor count be AQI, Lightning, Aftershock Bit 02 = 1 Low battery < 2.9V sensor shut off, 0 = battery V OK So these bits are powers of 2 (1,2,4) so when added together you get the value of AUX A 3 means solar is present + sensor is present + battery is > 2.9V You can find these bit definitions in the source for the Mini Pro Plus.
Below is the section from the AQI MiniPro Plus
// AuxA has state information
// coded in bottom four bits of the byte
// 0CAB
// A = 1, IN3221 (Solar) Present, 0 not present
// B = 1, HM3301 Present, 0 not present
// C = 1, Voltage below 2.9, HM3301 not turned on |
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0_0
Full Member
Posts: 114
Raspberry Pi: Yes
Other Device: PC, Arduino, ESP32
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Post by 0_0 on Nov 5, 2021 8:18:15 GMT -8
Nice! Thank you for such a detailed explanation doxidad.
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Post by Jason on Jan 16, 2022 13:51:43 GMT -8
Does a value of 6 for AuxA indicate that solar is NOT present, sensor is present and the battery is low? If so, what does solar NOT present indicate?
Thanks,
Jason
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Post by doxidad on Jan 17, 2022 5:05:21 GMT -8
The bits are CAB so 6 would be 110 (4+2+0) bits are powers of 2
C - 1 Voltage below 2.9V
A - 1 Solar Present
B - 0 HM3301 not present
So - solar is there, but battery low and because it is low, the HM3301 is shut off
I run into the same problem since it is winter and there a very few sunny days. I get about 2-3 weeks and then have to pull the box (lighting detector) and charge the batteries. Runs fine the other 3 seasons. I also have 2 solar cells on the unit which have helped somewhat. My area is known for having very few sunny days all year round since I am about 30 miles south of Lake Erie. Another 20 miles south the weather is totally different.
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Post by Jason on Jan 17, 2022 5:30:42 GMT -8
Ah thank you! Didn’t realize I had switched two of the bits which makes sense!
Thanks,
Jason
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