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Dan replied to the topic PAR issue with Mayfly in the forum Mayfly Data Logger 1 years, 12 months ago
Shannon,
As you suggested, I tested a duplicate of our set up in the lab and used a power supply source set at 1.5V in the aa0 and aa1 ports used to measure PAR on the mayfly. I get 93 mV and 470 umol for PAR. Clearly wrong. It appears the bits are recorded wrong or they are converted to mV incorrectly. Any thoughts on a next step to…[Read more]
Dave replied to the topic DF Robot KIT0139 Level Sensor in the forum Environmental Sensors 1 years, 12 months ago
Hi Neil
Thanks for the feedback. So I guess a separate sensor housed in the same box as the mkr1400 would be useful. That’s on the (long) list of improvements!
I’ll post some actual data from the piezometer in the next couple of weeks.
Cheers
Dave
neilh20 replied to the topic DF Robot KIT0139 Level Sensor in the forum Environmental Sensors 2 years ago
Hello Dave, thanks for sharing.
I had thought of getting the device, because of the price, so interesting.
The issues I saw is that it has two sources of analog error and unquantified temperature coeffocient for each source of error.
Every “analog” device typically has a temperature dependency, This would be the depth sensor itself, which…[Read more]
Dave started the topic DF Robot KIT0139 Level Sensor in the forum Environmental Sensors 2 years ago
Hello
I thought I would share my experience of using the DF robot gravity industrial level sensor (KIT 0139), as there have been a few posts about it.
I’ve connected this to an Arduino MKR1400 GSM board via an ADS1115 16-bit ADC.
The results initially were stable enough. I put the sensor in a covered bucket of water (static level) and checked…[Read more]
Dan replied to the topic PAR issue with Mayfly in the forum Mayfly Data Logger 2 years ago
Shannon
I’ll give your suggestions a shot and see if we learn anything.
Thanks for the quick reply.
Dawn replied to the topic Mayfly v1.1 technical questions forum thread in the forum Mayfly Data Logger 2 years ago
It was ExFAT formatted, now FAT32 formatted and working! It’s great when the fix is so easy. Thank you!
Shannon Hicks replied to the topic Mayfly v1.1 technical questions forum thread in the forum Mayfly Data Logger 2 years ago
As long as the cards are formatted for FAT32 and you can read/write to them with other Mayfly boards or Windows devices, then it’s possible the on-board memory card socket on that Mayfly is broken. Is this a brand new board that you’re using a card in for the first time? If you’ve got an EnviroDIY vertical microSD adapter you could try putting t…[Read more]
Dawn replied to the topic Mayfly v1.1 technical questions forum thread in the forum Mayfly Data Logger 2 years ago
I have a new Mayflyv1.1 board and it does not recognize the microSD card (it’s side loaded into the board without any adapter). I am using the mayfly1_TempHumidLight_simpleLogger example with no changes. When I turn on the Mayfly board, I get:
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Shannon Hicks replied to the topic Linking two Mayfly Boards Together in the forum Mayfly Data Logger 2 years ago
I use pin 22 on line 145 because I’m using a prototype Mayfly board that is able to generate 12v to directly power the external sensors. If you’re using an external 12v source for your sensors, then it’s fine to put -1 on line 145. And I’m using a Max13412 RS-485 chip on my modbus adapter, which has auto direction control and internal 5v…[Read more]
Shannon Hicks replied to the topic PAR issue with Mayfly in the forum Mayfly Data Logger 2 years ago
I looked at your sketch, it’s based on some really old examples we published many years ago at the beginning of the Mayfly project, but it should still work if you’ve got all the original old libraries. Many of them have been replaced or updated since then, and major changes were made to the Mayfly board design in recent years, making some of…[Read more]