EnviroDIY Monitoring Station Kit

New for 2025:  You can now configure your kit to include either a cellular or wifi module (or none), and whether you want 2, 3, or 4 threaded holes drilled in the case for cable glands.  See below for configuration options.

The EnviroDIY Monitoring Station Kit contains parts for building a solar-powered data logging station. With proper programming, users can record their data to a removable memory card, and with the addition of an optional telemetry module users can report their data to Monitor My Watershed and other IoT websites. This do-it-yourself kit requires computer programming using Arduino and requires mechanical assembly. To gauge the level of effort required, please review the links provided in steps 1-4 below (note that the components included in this Kit are listed in the manual and can be ordered individually).

The Kit does NOT include water sensors or a main Lithium battery.  See our recommendations for battery options for important notes because some battery connectors can have reversed polarity which will permanently damage the Mayfly board. To deploy this kit in the field, additional installation equipment is required from your local hardware store (see links below) for final installation suggestions. The Kit does not come with any printed instructions, guides, or any other materials because they can all be found here on our EnviroDIY website.

1. Most of what you need to learn to assemble and program your EnviroDIY Monitoring Station is available in our online manual and these videos.
2. The Manual demonstrates the use of a Hydros 21 CTD sensor made by METER Group. You’ll need to order this sensor yourself, and you should specify that you need the 3.5 MM STEREO PLUG on the sensor cable when ordering.
3. In Section 6.3 of the manual you will learn how to connect the Hydros 21 CTD to a Mayfly by first changing the SDI-12 address that the Hydros communicates on.
4. Register as a user of EnviroDIY.org. The EnviroDIY forums are a great resource for troubleshooting, learning, and asking questions.

The Monitoring Station Kit contains:

• Mayfly Data Logger v1.1 RevB board and USB-C cable for connection with computer
• 2 microSD cards (8GB) and standard SD card size adapter
• vertical microSD card adapter for Mayfly Data Logger
• CR1220 coin cell battery for Mayfly Data Logger onboard clock
• small RP1095 case for holding logger inside the Pelican case
• 20cm Grove cable and a Grove-to-3.5 mm jack adapter for sensor connection (sensor not included)
• 6-volt, 5-watt ETFE solar panel and metal mounting bracket, stainless steel U-bolt for attaching panel bracket to a post, and solar power extension cable with polarized quick-connector for connection with Mayfly Data Logger
• stainless steel hose-clamp (2.5″ max diameter) for attaching water sensor bundle to pvc pipe (pipe not included) and stainless steel retaining pin for attaching pvc pipe (not included) to steel rebar (rebar not included)
• one 8″ metal mounting bracket with set of stainless steel nuts, bolts & washers (for attaching bracket to the Pelican case)
• 2 stainless steel hose-clamps (1.5″ max diameter) for mounting the Pelican case on a post
• 2 nylon waterproof cable glands: 1 x-small (3/8″NPT for cables 0.08″ – 0.24″) for solar cable, 1 large (1/2″NPT for cables 0.24″-0.47″) for CTD sensor cable. 1 or 2 additional cable glands can be added at checkout below, but you must state your size preference based on your cable diameter.
• waterproof Pelican case (model 1120) with pre-cut foam.  Comes with 2 pre-drilled 1/4″ holes in the back for the mounting bracket.   Also has 2 pre-drilled threaded holes for cable glands (one 3/8″NPT and one 1/2″NPT) on the bottom.  One or two additional holes can be added by selection the option below.
  
  Telemetry modules:  (choose one of the following)
• Cellular module:  EnviroDIY 4G LTEbee Cellular module with antennas and Hologram SIM card (default)
• Wi-fi module:  EnviroDIY ESP32 Wifi/Bluetooth module
• No telemetry module
  
  Cable glands and holes options:  (choose one of the following)
• 2 hole (1 solar cable, 1 sensor cable) (default)
• 3 holes (1 solar cable, 2 sensor cables)
• 4 holes (1 solar cable, 3 sensor cables)

Important: if you choose the 3 hole or 4 hole option, or for the 2-hole option you want something other than the default Large size sensor cable gland, you must add a note during checkout, or email us after purchase, to select what size cable glands you want us to include with your kit.  Options are based on your sensor cable diameter and are X-small (0.08″-0.24″), small (0.16″-0.31″), medium (0.2″-0.35″), and large (0.24″-0.47″).

You will need additional parts to install the station and you can find where to buy them in EnviroDIY Monitoring Station Parts List.

A list of recommended tools can also be found in the manual in Section 7.1.

For more information and instructions on the sensor station installation process, please view the video tutorials provided under “Installing an EnviroDIY Mayfly Sensor Station.”

Shipping: The EnviroDIY shop ships your order by US Postal Service Priority Mail, or other carriers for large shipments. Shipping cost is included in the product price listed. Please allow 3-5 business days for processing after placing an order because these kits are built when you place an order due to the customization options.  You will receive an email with the tracking number as soon as your order is shipped.

International orders: The EnviroDIY shop can only ship to addresses with the United States.

Payment: The EnviroDIY shop accepts all major credit cards via Paypal; customers do not need a Paypal account to use the checkout and won’t pay any additional fees.

Backorders: If an item is listed as unavailable, the EnviroDIY shop does not accept backorders. Please check back soon for availability.

Warranty: Stroud Water Research Center warranties products sold to be free of manufacturing defects for 30 days from the postmark shipping date. If your product doesn’t work as expected and you need help troubleshooting, please consider posting questions to EnviroDIY.org/forums. If you are confident in the programming and assembly you’ve done but believe the hardware is defective, please contact mayfly@stroudcenter.org to request a Return Authorization Number. Products should be returned in their original box with the RAN written on the box. Customer is responsible for shipping cost. Following receipt and evaluation, Stroud Water Research Center will either send a replacement product if the original was deemed defective or return the original if it was not defective.

Returns: The EnviroDIY shop will accept return of unused or defective products (see Warranty section for details) for 30 days after the postmark date of shipment. Returns must be authorized and shipped with a Return Authorization Number on the outside of the box; contact mayfly@stroudcenter.org to request an RAN. Returns must be sent in their original shipping box. A $30 restocking fee will be applied to the credit on customer’s payment. Customer is responsible for return shipping to Stroud Water Research Center, ATTN: EnviroDIY, 970 Spencer Road, Avondale, PA 19311.

CA Prop 65 Warning: This product contains chemicals known to the state of California to cause cancer and birth defects or other reproductive harm.