https://www.envirodiy.org/members/klstokes/activity/ Activity feed for Kevin Stokes. Fri, 03 Apr 2026 20:03:56 -0400 https://buddypress.org/?v= en-US 30 hourly 2 bb7c2c91d28f3e7550bc5b2d0a6ac43c https://www.envirodiy.org/topic/minor-glitch-reading-maxbotix-mb7389-with-mayfly/#post-12329 Wed, 25 Jul 2018 16:38:49 -0400 I have an update. I think the problem comes from the reading the sensor with SoftwareSerial_ExInts. There is data left in the read buffer after the read. I’m not sure if this is a real fix, but it seems to work. There is a section of code in MaxBotixSonar.cpp that reads the six header lines from the sensor, after the power is turned on. I changed…[Read more]

]]> 1000347d3ce5519435247029d0622d8f https://www.envirodiy.org/topic/minor-glitch-reading-maxbotix-mb7389-with-mayfly/ Mon, 02 Jul 2018 22:06:31 -0400 We have deployed a water depth station using a Maxbotix MB 7389 ultrasonic sensor with a Mayfly datalogger. It is dutifully reading the sensors every 11 minutes and uploading the data to data.enviroDIY.org. We are using “Logging_to_EnviroDIY,” modified for our sensors. The data site is Paulding County High School Retention Pond (PCHS_POND), in…[Read more]

]]> 099b9dd91e12b431279ec1c61f5eee0b https://www.envirodiy.org/topic/testing-data-uploads-to-data-envirodiy-org/#post-12285 Tue, 01 May 2018 16:19:51 -0400 Thank you Beth and Sara. We are currently using older code to simply wake up the Mayfly, take data, and write to an SD card. This has been deployed outdoors and works. I see the best way to implement the cell phone telemetry is to use code based on “logging_to_EnviroDIY” and the associated libraries. I have only had a chance to download this code…[Read more]

]]> d85737efa6221b648d7436a52d6d4aad https://www.envirodiy.org/topic/sonic-sensors-and-their-enclosures/#post-12284 Tue, 01 May 2018 15:58:19 -0400 This first version had no cord grips. The students used silicone sealant but water was able to seep in somewhere. They say it didn’t flood. I have since purchased cord grips, http://www.newark.com/jacob/50007m12pasw-f/cable-clamp-gland-polyamide-thrd/dp/15M6172?ost=1168781&ddkey=http%3Aen-US%2FElement14_US%2Fsearch. Like the ones you suggested,…[Read more]

]]> 5810ed9522f889a79c1000f087015eb3 https://www.envirodiy.org/topic/testing-data-uploads-to-data-envirodiy-org/ Mon, 30 Apr 2018 19:26:53 -0400 I would like to deploy a sensor station and upload the data to data.envirodiy.org. I have a Mayfly datalogger and can take ultrasonic range data for water depth and temperature data and store the data on an SD card. I have a GPRSBee Rev. 6 and an activated SIM card. I am ready to register a site on data.envirodiy.org, but I would like to test the…[Read more]

]]> b5a805d7f3ddebb2a52382fd482490ff https://www.envirodiy.org/topic/sonic-sensors-and-their-enclosures/#post-12270 Fri, 27 Apr 2018 21:18:07 -0400 Thank you. The students came up with almost the same idea; the attached image is their first design. We found some PVC pipe fittings that we think will help and we are working on a new design. Basically, we found a 4″ PVC cap that has a flat top which we think will make it easier to attach the Pelican case.

]]> e8a5dbc9e43c40e616e0feaa3a108cff https://www.envirodiy.org/activity/p/2978/#acomment-3094 Tue, 27 Mar 2018 16:34:34 -0400 Thank you. I checked out the link, that is very nice. Right now we only have the ultrasonic sensor, but I wanted to add temperature sensors for water and air. In the future, we might add a rain gauge.

In reply to - kevin ryan posted an update in the group Researchers I am searching for recommendations and resources to construct a low-cost ultrasonic water level sensor for use with trapezoidal flumes on small streams ]]> a69738ff13fc5131521c3225c4fa2a58 https://www.envirodiy.org/activity/p/2978/#acomment-3089 Mon, 26 Mar 2018 16:19:22 -0400 I have a couple of high school students making a water-depth sensor with the MB7389 ultrasonic sensor and a Mayfly data logger. The information you posted has been very helpful. We are also using the Pelican 1120 case. The problem we are having is attaching the case/MB7389 to the top of the 4″ PVC pipe that we are using for a stilling well. Any s…[Read more]

In reply to - kevin ryan posted an update in the group Researchers I am searching for recommendations and resources to construct a low-cost ultrasonic water level sensor for use with trapezoidal flumes on small streams ]]> 5bf4559660a175e03e184e47545f04e0 https://www.envirodiy.org/activity/p/2615/ Wed, 26 Jul 2017 21:01:42 -0400 0