EnviroDIY | Charitha (CJ) | Activity https://www.envirodiy.org/members/charitha/activity/ Activity feed for Charitha (CJ). Fri, 03 Apr 2026 20:03:56 -0400 https://buddypress.org/?v= en-US 30 hourly 2 c02aef0f04551bdbe3369a8fb4bcf566 Charitha (CJ) replied to the topic How to get a 5V signal out based on a sensor reading in the forum Mayfly Data Logger https://www.envirodiy.org/topic/how-to-get-a-5v-signal-out-based-on-a-sensor-reading/#post-15621 Tue, 22 Jun 2021 11:25:27 -0400 Basically trying to control flow through an outlet of a bioswale. The algorithm for control is attached as a diagram (I have written this in python and campbell coding but yet to do in C++). I’ve attached the .ino file I’m playing around with as well. The decagon CTD sensor is connected to D4-5 and I’m trying to get a 0-5V signal out from D10-1…[Read more]

]]> d43c7733092d23e38700015c9da78fa2 Charitha (CJ) replied to the topic How to get a 5V signal out based on a sensor reading in the forum Mayfly Data Logger https://www.envirodiy.org/topic/how-to-get-a-5v-signal-out-based-on-a-sensor-reading/#post-15619 Thu, 17 Jun 2021 18:03:31 -0400 I changed the connections as you have suggested. I noticed that D22 gets activated when .logData() function is run. And because the data reading interval is controlled through .logData() I can’t seem to do much. When the CTD is connected to the D4-5 jack, do I still have to have SDI12Power set to 22 in the code below?

DecagonCTD…[Read more]

]]> 233f13515f67bf437c7adf2c19654459 Charitha (CJ) replied to the topic How to get a 5V signal out based on a sensor reading in the forum Mayfly Data Logger https://www.envirodiy.org/topic/how-to-get-a-5v-signal-out-based-on-a-sensor-reading/#post-15611 Fri, 11 Jun 2021 18:22:02 -0400 Thank you so much for the replies. The 5V signal duration varies with site and rain event conditions. However, with my previous field work, using a campbell system, the valve controlled by the actuator was open (5V) for an average of 10 mins (but could be a few hours on extreme rainfall events). How would the duration affect the mayfly? I’m using…[Read more]

]]> c3f495aebdfc90c4d759a5e2cdf8bd18 Charitha (CJ) started the topic How to get a 5V signal out based on a sensor reading in the forum Mayfly Data Logger https://www.envirodiy.org/topic/how-to-get-a-5v-signal-out-based-on-a-sensor-reading/ Wed, 09 Jun 2021 22:22:27 -0400 I’m trying to send out a 0-5V signal out to an actuator to be controlled using data collected thorough a CTD sensor (Hydros 21).  I have used the ‘DRWI_NoCellular.ino’ sketch referred in the monitoring station manual and was able to get the data logger to collect and store the data. I’ve been trying to figure out how to send out a signal. I read…[Read more]

]]> 6a8977ce3aeb07398420def2e2832ac9 Charitha (CJ) became a registered member https://www.envirodiy.org/activity/p/5051/ Thu, 26 Mar 2020 12:56:35 -0400 0