Menu

Mercury V1 altimeter & flight logger computer, super accurate and auto uploading and flight charts.

MRS-MERCURYV1
£39.60 £33.00
£56.99 You save: £17.39
Stock: 28 item(s)

This altimeter works with our altimeter cloud website to show you handy charts and flight data with ease.

90 days
Price in points: 3300 points
Earn reward points: 165 points
 
BrandModelrockets.co.uk Logs flight data?Yes (detailed) Max altitude (ft)30000ft Max altitude (m)9200m
Order before 10am for next day delivery
Regular shipping from £4.99 - £8.49
Earn 5%* in reward points on your order
Find out more on our rewards page
Live stock in our warehouse
All stock is ready to ship straight away
120-day return period
Peace of mind with a long return window
The Mercury V1

The Mercury is a small, smart altimeter that easily fits in rockets that are at least 18mm in diameter (22mm in it's default case or 18mm if you use the included optional electronics bay mount, or your own mount).
It is extremely easy to use and you simply need to turn it on and then fly your rocket, it can even sit on the launch pad waiting for launch for up to 4.5 hours without running out of power from a full charge. And if you do need to top up the charge, a short USB-C cable is included to charge it from your phone in the field. A full charge will typically only use around 1% of your phone's battery.
Designed and developed in house right here at modelrockets.co.uk to be a great additional component in your next rocket.

The altimeter is ready to fly with all the default settings uploaded already so all you really need to do is turn it on and you are set for flight.  There are also plenty of advanced settings should you want to fine tune your altimeter or use it for a not quite standard project.
Currently the Mercury is in the final Beta firmware so we're offering a 31% discount for the next few weeks for anyone that wants to Beta test the altimeter. You will be able to update to the release firmware on the altimeter cloud website in just a few clicks too when it's released!

The Mercury is a capable altimeter which offers you tons of detail about your rocketry flights. It will fly reliably to 9200 meters (30,000 ft) altitude before the pressure sensor exceeds it's specifications.
The addition of a great accelerometer and gyroscope for each axis lets the altimeter calculate and detect additional flight events such as motor burn out, deployment events and fine tuning of the landing time.
It also lets us calculate flight angles such as tilt from vertical, pitch, roll and yaw to let you see how straight your rocket flew. You can even use the gyroscope data to see how aligned you got your fins by it's rotation speed.

No hassle charts
The Mercury works with our Altimeter Cloud system to let you view your data with ease. Detailed high quality charts are produced automatically with plenty of ways to share and view them.
All you have to do is configure your home WiFi or mobile hotspot WiFi on your altimeter so it can upload your flight data to the cloud when it sees your WiFi and is put into WiFi mode.
All flights are then automatically uploaded with no storage limits or restrictions on how many flights you can store.
View the Altimeter Cloud
View sample chart
High quality sensors
Don't let the small size fool you!
The Mercury altimeter has high quality sensors to enable it to function. It utilises a Bosch BMP390 pressure sensor to calculate altitude. We've also added a 32G 3-axis accelerometer and 2000 degrees per second 3-axis gyroscope as well.

The Mercury V1 has a relative accuracy of just 25cm or better. In testing we found it could accurately measure the floor to desk surface within just a few centimeters with ease.

The pressure sensor also automatically compensates for changes in temperature when calculating altitude.
Internal WiFi & Webserver (Access point)
Our altimeter has internal WiFi that can connect to the internet to upload your flights to the Altimeter Cloud.

It can also let you connect to it to configure it directly with your phone or other device. This lets you view flight details in the field even if you don't have internet available where you are.

You can also view flight summaries via USB Serial or configure it to use your mobile hotspot to upload and use the Altimeter Cloud even in the field!
Configure from the Altimeter Cloud
You can configure your altimeter to connect over the internet to our Altimeter Cloud. All you have to do is enter your WiFi settings.

You can then add and manage your devices on the Altimeter Cloud with ease from anywhere in the world. All settings are available on the website.

Flight logs can have additional details added to them and then they can be shared easily on the Altimeter Cloud with anyone you choose.

You can also update your firmware and view the USB serial data using our web tools.

Data Logging & Charts
The Mercury logs plenty of data which you can choose to upload automatically to our Altimeter Cloud. This will then offer you charts directly in your web browser that you can share easily too. Here is a brief summary of the data the Mercury logs.

Altitude
Ultra accurate pressure based altitude is logged referenced to the launch pad altitude. Apogee, landing and event altitudes are also logged.
Acceleration
Acceleration is recorded in 3-axis up to 32G per axis. This helps fine tune events as well as rotation angles.
Gyroscope
The gyroscope logs rotational angle rates in each of the 3-axis like the accelerometer up to 2000 degrees per second.
Velocity
Speed of ascent and descent is recorded along with key event speeds, such as landing and descent.
Angles
The altimeter also calculates and records pitch, roll, yaw and tilt angles from vertical using the 6-axis from the accelerometer and gyroscope.
System data
Flight settings & general information are recorded allowing you to review all the information of your flight.
Prediction and Correction Filters
We use advanced filters such as Kalman and Madgwick to remove noise and reveal better data and angles during flight.

Kalman filters will estimate the current state based on previous states before refining the prediction in the correction phase using new sensor measurements.

The result is an almost perfect real result to the data your altimeter records.

This gives the true smooth flight profile that your rocket will have flown without the noise. This helps offer more accurate readings such apogee, as the noise or erroneous reads will not be present on top of the maximum altitude.
It's also a development board
If you want to have a go at programming your own altimeter, or use the Mercury for a different function then you can.

The Mercury can be programmed yourself using Arduino IDE or ESP IDF applications. Some example Arduino IDE code is included in the manual to get you started.

What's more, you can always put our firmware back on in just a few mouse clicks using our web based firmware tool on the Altimeter Cloud when you want to use the altimeter as intended again.

Always check where you are flying allows custom flight computers if you're intending to do this of course!
1x High current output
The Mercury altimeter also has a high current output. This is a current limited output to approximately 12A (depending on conditions). You will need to use an external battery for this output switch.

You can configure this to trigger when certain conditions are met in the settings.

Safety features such as low altitude lock out and over tilt angle protection are also available.
No rush to launch!
Our altimeter has a huge 4.5 hours life while it's sitting waiting to launch. This is achieved by putting the processor to sleep for fractions of a second between samples generating a really low average power use.

Our altimeter uses a dynamic pressure sample as the launch pressure, rather than the one that was present when it was turned on. This means that changes in atmospheric pressure while you wait will not affect the altimeters accuracy during flight.

Accidental launch detection prevention ensures that even the strongest gust of wind won't trigger a launch by disrupting the pressure sensor. 
More on the Altimeter Cloud
Quick USB Data
If you need to verify flight information quickly and easily, perhaps from lots of devices at a competition for example, you can use the USB serial option.

Either plug the device in to your phone and use a USB Serial app, or use our online USB Serial viewer on the altimeter cloud on your laptop. Once connected just press the button to see the last two flights summaries.

The altimeter serial is also shown if you want to be sure a team has submitted the correct altimeter that was flown.

Specifications & features
This is a brief summary of the main features of the Mercury altimeter
Dimensions (in case)
39.5mm x 19.2mm x 13.9mm
Dimensions (out of case)
30mm x 17mm x 12.3mm
Weight (in case)
7.35g
Weight (out of case)
4.58g
Battery capacity
50mAh, 3.7v
Battery life (flight mode)
> 4 hours
USB port
USB-C
Sample rate
32 or 16 samples/second
Max samples per flight
10200
Max record time / flight
10m 35s @ 16 sps
Device type
Model rocketry component

Pressure sensor (Altitude)
The BMP390 pressure sensor offers impressive accuracy down to 300 hPa of pressure, this lets the Mercury get a precise altitude up to around 9500 meters (31,000 feet).
Absolute pressure accuracy:
±0.50 hPa/mbar
Relative pressure accuracy:
±0.03 hPa/mbar
Relative altitude accuracy:
±0.25 meters
Maximum rated altitude:
~9200 meters, 30183 feet
Accelerometer & Gyroscope
The LSM6DSO32 inertial module offers 3-axis of 32G acceleration and 3-axis of Gyroscope measurements. It is designed with high robustness to mechanical shock which should help in case of accidents.
Acceleration range:
±32G
Gyroscope range:
±2000 dps
Acceleration tolerance:
±0.5%
Gyroscope tolerance:
±0.5%
More specifications
Battery capacity (mAh)
50
Battery life
4+ hours from full charge
Battery type
1S Lipo
Battery voltage
3.7v
Brand
Modelrockets.co.uk
Condition
new
Creates charts via app or website?
Yes, website with auto uploading
Dimensions
39.5 x 19.2 x 13.9mm
GTIN
5061078870020
Hazard class
Not dangerous goods
High current outputs
1x 12A current limited
Length
39.5mm
Logs flight data?
Yes (detailed)
Max altitude (ft)
30000ft
Max altitude (m)
9200m
MPN
MRS-MERCURYV1
Product options
Mercury V1 Altimeter
Rechargeable?
Yes (USB-C port) around 1 hour
Sensors: Accelerometer
Yes
Sensors: Gyroscope
Yes
Sensors: Magnetometer
No
Sensors: Pressure
Yes
Sensors: Temperature
Yes
UN Classification
Not dangerous goods
Weight
7.35g
Quantity in pack
1
Type
Smart altimeter
Do you sell gift vouchers?
Is model rocketry legal in the UK?
My rocket won't launch what could be wrong?
What age is suitable for model rocketry?
How soon will I receive my order?
What do I need to build and launch a model rocket?
How should I store my rocket motors?
Can I come and visit you?
How can I get into rocketry? Can anyone do it?
How much space do I need to launch my rockets?
My rocket has had an accident, how can I get spare parts?
What accessories can I add to my rocket?

No reviews found

Shipping your order.
Once you have paid for your order we will work to dispatch your items.
All items on our website shown as in stock, are in our warehouse ready to ship unless stated otherwise on the product page. 

We aim to ship orders within 1 working day of ordering on your chosen shipping method.
We do not guarantee this however, especially at extremely busy times of the year. Therefore if you do require your order urgently, please drop us a email after you order to let us know.

Please note that you must use a courier option if your order contains rocket motors, you can not use the Royal Mail for orders with motors. The website should automatically disable the Royal Mail shipping option once these items are added to your cart. However in the case of a website mistake you will need to use the courier option. 

Orders will ship on your chosen courier, all UK Mainland couriers we offer are a next day service. The couriers however do not offer us a guarantee on this, so we are unable to pass one along.
Over 95% of our orders do arrive next day as intended. 

If you require Saturday delivery there is a Saturday delivery option on the checkout page. DHL do not offer Saturday delivery by default.
Delivery options.
We offer a variety of delivery options on the checkout page. We also off the option to pickup your order from our warehouse in Millom, Cumbria, LA18 4JS.
You can use the Royal Mail option for smaller items up to 2Kg in weight as long as they do not contain motors.
Please be aware if you require AM or Saturday delivery these orders may still take up to 1 working day to dispatch. We do, however, prioritise express orders for dispatch.  
Returns.
Returns for any reason
We will accept returns on all products for 90 days from the date of delivery.
If an item was sent un-tracked the delivery date is agreed to be 2 (two) days after shipment.

Changed your mind or do not like the product?
You are required to cover the cost of returning the item to us, we can send you a pre-paid label to deduct from your refund if it is convenient or cost effective for you.
Items without rocket motors
£7
Items with rocket motors
£13
These prices cover up to 25Kg in weight, and if the order is larger multiple labels will be required.  These prices are for UK collections only, please contact us if outside of the UK.

Returned items should be undamaged and in a good condition suitable to be sold again. They need to arrive with us in this condition.

You must package the item well so that damage does not occur in transit, although you do not need to use the original packaging.
Item was damaged, faulty or other reasons?
We are happy to cover the cost of returning a product that has arrived damaged or faulty within 90 days.
We will offer to replace the faulty or damaged item, or refund you in full at your preference.
In regards to missing parts of kits we reserve the right to replace the required parts rather than the entire kit. 
Was your item customised, personalised or ordered in specially?
Custom items & special order items can not be returned for a refund as they are not sellable or may be hard to sell again.
If the item arrives damaged or faulty we will of course still offer a refund or replacement on custom orders.
My item has not arrived can I have a refund?
If your item has not been dispatched, yet then we can cancel your order and refund you in full. Except if this is a special order item that we are unable to cancel and have already ordered from the supplier. 

 If your item has been dispatched then we will need to investigate with our couriers before continuing with our refund process. This may take up to 14 working days to complete although is usually a far quicker process. We will always offer a full refund or replacement for lost items.
Your refund
Refunds will be processed within 3 working days of your item being returned to us.

If you paid by BACS we will require your bank details to send a repayment via BACS.
BACS payments should usually arrive in your account the same day, however please allow up to 5 working days.

If you paid by PayPal (Debit or Credit Card) the refund will usually be processed on to the payment method used to make the payment. This may take up to 7 working days to complete but is usually within 3-5 working days.

If you paid via credit or debit card the refund will usually be with you within 1-5 working days. 

If you paid by cheque we are unable to process a refund by any method other than cheque and this will be posted 2 working days after your payment cleared at the earliest. (This is the final clearing date defined by the latest time period in which the cheque can be reversed, not the initial funds release date.)