The comma three is custom hardware designed to live in your car, and purpose built to run openpilot. The comma three has three beautiful HDR cameras, two cameras to watch the road and one night-vision camera to see inside the car.
Besides cameras, the comma three has a suite of connectivity and sensors including cellular LTE, Wi-Fi, an IMU, high-precision GPS, and microphones.
comma three devkit
1.5 ft right-angle OBD-C cable
2 mounts (with adhesive and alcohol wipes)
If for any reason you are dissatisfied with anything purchased at the comma.ai shop, ship it back within 30 days for a full refund. comma.ai/returns
If you intend to upstream support for a new car model, we will extend your return window.
Free shipping via UPS (US only); signature confirmation required. International shipping is a $30 flat rate with all customs and duties calculated and paid at check out.
Your rate will be based on credit, and is subject to an eligibility check. Payment options through Affirm are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required.
1-year limited warranty against hardware defects. Open and repair the comma three at your own risk. comma is not responsible for damages that may occur while repairing devices. We cannot provide shipping return labels for international devices.
The comma three devkit does not ship with software capable of controlling a car. Open source software can be installed separately.
Before using the device on your windshield, check the state and local laws and ordinances where you drive. Some state laws prohibit or restrict the placement of objects on the windshield of a motor vehicle. IT IS THE USER'S RESPONSIBILITY TO MOUNT THE DEVICE IN COMPLIANCE WITH ALL APPLICABLE LAWS AND ORDINANCES. Always mount your device in a location that does not obstruct the driver's view of the road. comma does not assume any responsibility for any fines, penalties, or damages that may be incurred as a result of any state or local law or ordinance relating to the use of your comma device.
How and where do I buy a comma device?
The comma shop is the only official retailer of comma devices (the comma two and comma three). The comma shop accepts all major credit cards. We offer free shipping in the U.S. and $30 flat rate international shipping.
Buy the comma three here.
I ordered a comma device! Now what?
Congratulations! Get started by watching the Installation Guide on our setup page. We find on average the installation process takes 15-30 minutes.
If you encounter an issue, we recommend you join our Discord community where hundreds of active users are available to help troubleshoot.
Orders are fulfilled on Monday and Thursday. You can cancel your order for a full refund up until it ships through your order page.
Does installing a comma device require permanent modifications to the car?
Installing a comma device does not require any permanent modifications to your car. With the car harness, most car trims remain in place.
How do I mount my comma device?
Watch our Mounting Guide. First, figure out where on the windshield you would like to mount the device. We recommend it be centered on the windshield below the trim. Be sure to leave enough room to remove the trim in the future. Clean the windshield before mounting with the included alcohol wipe. Remove adhesive and hold mount in place with light pressure for 10 seconds. Remove the comma device and press firmly on the mount. Let the adhesive cure for 48 hours.
Before placing the device on your windshield, check the state and local laws and ordinances where you drive. Some state laws prohibit or restrict the placement of objects on the windshield of a motor vehicle. IT IS THE USER'S RESPONSIBILITY TO MOUNT THE DEVICE IN COMPLIANCE WITH ALL APPLICABLE LAWS AND ORDINANCES. Always mount your device in a location that does not obstruct the driver's view of the road. comma does not assume any responsibility for any fines, penalties, or damages that may be incurred as a result of any state or local law or ordinance relating to the use of your comma device.
Note: In California, a system with driver monitoring can be mounted on the top center of windshield.
Will installing a comma device void my warranty?
From the FTC website: "Simply using an aftermarket or recycled part does not void your warranty. The Magnuson-Moss Warranty Act makes it illegal for companies to void your warranty or deny coverage under the warranty simply because you used an aftermarket or recycled part."
Will my insurance cover my car with a comma device installed?
Contact your insurance provider directly; insurance coverage is between the user and their insurance provider. comma hardware users have been able to get coverage and discuss this on reddit here.
Insurance companies are beginning to understand the safety benefits of ADAS and LKAS systems like openpilot and we have not heard of any providers rejecting coverage to comma hardware users.
How long will my device have software support?
Although there's no official support for any software, it is comma's policy to continue providing software updates to hardware for 1 year after it is the latest generation sold.
What is the 30-day money-back trial?
If you are a first-time comma three purchaser, you will have up to 30 days from your installation date to try comma three devkit. If you don’t love the way comma three transforms your driving, you can return it for a full refund. No questions asked.
Do I have to pay for my comma three first before I try it?
Yes. If you pay by credit card, you will pay the full cost of the comma three at the time of purchase. If you decide to return your comma three you will be refunded the full cost of the unit.
If you finance comma three through Affirm and wish to return within 30 days, Affirm will refund your installments, minus any applicable interest fees, after your comma three is picked up and the return is processed.
Does the 30-day money-back trial start based on the order date, installation date or first drive?
The 30-day money-back trial starts the day your comma three is delivered. (Signature confirmation required for delivery.)
How do I return my comma three?
To return your comma three, please fill out this form and a return label (or return instructions if not in the US) will be automatically sent to you.
Are all delivery areas eligible for a 30-day money-back trial?