Shannon Hicks

There are several different ways to trigger an ISCO sampler with an external source.  We’ve found a few ways to do it with our Arduino-based loggers, it shouldn’t be too hard to program a Campbell logger to do the same.  One way is to connect your logger to one of the 3 Programmable I/O pins on the ISCO’s rain gauge connector.  By doing this, yo…[Read more]

I’ve had loggers out for several very cold winters now, and I haven’t had any issues with the LiPo batteries due to cold temperatures. The only times I’ve had problems was using them in clear enclosures during the summer because the inside of the case turns into a mini-greenhouse and heats up the batteries (and the logger boards), resulting in…[Read more]

Our Github site is already active, you can see it here: https://github.com/StroudCenter

But I haven’t written up a tutorial for this sensor display project yet. If you’re good with code and the LCD hardware, take a look at the SDI-12 library examples and you should be able to replicate it pretty easily.

The ADS1015 ADC has a programmable gain so I since I was looking at signals I knew were below 2v, I used the GAIN_TWO setting to give me a range of +/-2.048V. You can select anything from a gain of two-thirds to 16, which is a range of around 6v (but realistically Vcc of 5v for an Uno) down to 0.25v.

For accuracy, the error is supposedly less…[Read more]

If you’re using the DS3231 library, you can use the following code:

DateTime now = RTC.now(); //get the current date-time
currentepochtime = (now.get()); //seconds since 1/1/2000

Look at the “now” example that comes with the DS3231 library to see the whole sketch.

What kind of pressure sensor are you using? You can usually get temperature-compensated ones for only a slightly higher cost than non-compensated ones.

This is a good topic for the Q&A forums. Start a thread over there and we can continue the discussion there.

That sensor may not be the best option for you, head over to the Sensor forum, start a thread there and I’ll elaborate.

Sam, that’s a really good question, ask it over in the “Dataloggers” forum and I’ll answer it there so other people can find these discussions more easily.

I have dozens of Seeeduino Stalker v2.3 boards, and we have been using them for a few years now. But they were discontinued last fall and replaced with the new v3.0 model. We will not be using the v3.0 version, for a variety of reasons, so we are currently testing and evaluating other board options. The Fio is only handy because it has an Xbee…[Read more]

We’ve had really good results with the Decagon CTD sensor. It provides water depth, temperature, and conductivity, all for less than $500. It has a depth range of up to 10 meters and has a resolution of 1 millimeter. It provides data output in either SDI-12 or serial output, both of which can interface nicely with our loggers.

That photo was from a temporary test setup, so I don’t have more pictures. I moved the PVC pipe to a more secure mounting to survive higher flows. The ultrasonic sensors, along with all of our other sensors and logger circuitry, are performing perfectly this winter, even with air temperatures below 0 degrees C a few times. I’m still running a…[Read more]