DirtMate RTK: Mobile device requirements and recommendations

Minimum technical requirements

A Propeller user account is required for sign in. 

• Create an email for the operator(s) to use as a username for a Propeller account
• The user must be added to the portal and be granted access to the site the device will be used on

Recommended devices

While many devices meet the minimum specs, the following hardware is recommended for the best experience with the DirtMate RTK system:

Apple (iOS)

• Smartphones: iPhone 12 series and newer (A14 Bionic chip, 4GB+ RAM)
• Tablets: iPad Air (4th Gen or newer), iPad Pro (3rd Gen or newer), or iPad Mini 6 (WiFi / LTE version)

Android

• Smartphones: Google Pixel 6 series and newer (Tensor chip, 8GB+ RAM), Samsung Galaxy S21 series and newer (8GB+ RAM)
• Tablets: 
  • Samsung Galaxy Tab S7 or newer (6GB+ RAM), Google Pixel Tablet. (Tensor G2 chip, 8GB RAM)

Suggested devices

These devices meet all of the requirements listed above

• iPad Mini 6 and A7 Models (WIFI/LTE versions): suggested Mounting Solution
• iPad Pro (2nd generation and above) (WIFI/LTE version)
• iPad Air (3rd Generation and above) (WIFI/LTE version)
• Samsung Active 4 and 5 tablets (WIFI/LTE version): suggested mounting solution

Critical setup steps

App Permissions

After installing the Propeller Mobile App, you must allow the following permissions for the app to function:

• Location: Must be set to "Always" or "While Using App"

• Bluetooth / Nearby Devices: Must be allowed to connect to DirtMate hardware

These permissions may be prompted during the first interaction in the app.

Suggested hardware setup on a survey pole

The Mount Builder on the RAM Mounts website is a great tool that will guide you to purchase a kit that is appropriate for your needs. Simply specify a supported mobile device and the desired application, and you will be suggested various options specific to the phone or tablet of choice. 

For a survey rod, it is suggested to use the “Tough Claw” for a durable and rigid mounting solution that is compatible with all other B-ball accessories.

The survey rod itself can be sourced from your local geospatial dealer, SITECH, or ordered online. At Propeller, we enjoy the survey accessories produced by Grade Control Products.

Suggested hardware setup inside the cab

Because earthwork environments are harsh, in-cab devices require extra protection and dedicated power. Visit the cab of the machine to identify possible ways a tablet can be mounted in the cab. Look for things like handrails, existing brackets, smooth and flat trim pieces, or metal trim panels.

Cab requirements checklist:

• Screen size: 8” screen size or larger
• Protection: Rugged case and screen protector
• Mount: We recommend RAM mounts specific to the device
• Connectivity: SIM Card equipped / LTE enabled (Required)
• Power: Dedicated 12V charging source or hardwired fuse tap. We recommend braided/protected charging cables for longevity

This is another situation where leveraging the Mount Builder on the RAM website is a great option for ensuring you get exactly what you need to both mount and power the tablet in the cab.

Safe powering (fuse tapping)

Tapping into the fuse box is possible on nearly any machine and is suggested as a safe and reliable option that is not invasive. Fuse tap kits allow you to maintain a factory fuse or use an extra unoccupied fuse slot safely. 

Powering the mobile device

The tablet can be plugged into an existing 12V cigarette socket plug or USB found in the cab. If you want to establish something more permanent or want to avoid occupying accessory chargers in the cab, then going to the fuse box is the next best option. 

Custom splicing into existing wires is possible but can be easily avoided with a fuse tap.

Approved fuse targets (in priority order):

1. Spare / AUX / Optional Equipment
2. Radio / Cab Electronics
3. Accessory (ACC)

Prohibited circuits (never tap)

• Engine ECU / ECM
• Fuel / injection
• CAN / J1939 / diagnostics
• Safety systems (brakes, lockouts)
• Starter / ignition coils
• Hydraulic control systems

Conditional use (avoid if possible)

Circuit	Risk
Lights	PWM noise
Horn	Intermittent spikes
HVAC / wipers	Inductive noise

Video demonstration using a fuse tap kit to add an accessory to a vehicle

Using a supported device and a secure mounting solution ensures that your DirtMate RTK data remains accurate and your hardware stays protected. If you are uncomfortable with electrical wiring for in-cab setups, we strongly recommend consulting a site mechanic.

Tablet mounting examples

Still need a hand?

These articles are written to get you where you need to go, but if you can't find what you're looking for, our support team is here to help. Reach out anytime via the question mark in the bottom left of your portal.

Explore what's coming next

MapLabs is our early access program where you can try what’s coming next and share feedback with our team. Learn how to join.