Use Case: Motor control tuning with Formula Student Team Delft
September 24, 2021
Use Case: Motor control tuning with Formula Student Team Delft

Welcome again fellow Marpleans!

If you remember what we said a couple a couple of blogs ago we are supporting the Formula Student Team Delft (FSTD) with a sponsorship (aren't we generous)! For those who don't know, Formula Student is a worldwide competition for students to build and race their own electric race car.

Because the collaboration is such a succes we decided to make the trip from Antwerp to Delft and check out their workflow and show other Marpleans how cool it is to work with Marple.

"I can't imagine how they used to do this without Marple"

It all starts with a good set-up. You want a high frequency logger in order to extract enough data and really get the finest details of your configuration. The FSTD boys and girls go above and beyond to achieve this. Even if this results in taping a laptop on top of the car. The basic logger in the car only logs at 250 Hz and to test the motorcontroller they needed at least an 8kHz logger.

Safety jackets on, let's go! Look, I know you're here for data and data analysis but I won't deprive you of this cool driving footage either. The test in question was so they could finetune the motorcontroller. This means driving around some cones on the parking lot was enough!

Then what? I'll let Andrea, the George Clooney of control systems tell you himself:

Data visualisation in Marple.. Oh What A Dream! It took more time walking to the office than having the datasets in Marple. In fact, because they work with our infamous API, as soon as his laptop connected to the internet. The upload of the dataset to the Marple data management system started and there was no waiting time for them to start analysing the data. I say them because as you know Marple allows your whole team to simultaneously look at the data.

After quickly finding the possible improvements, they made a couple of tweaks and went to the track.

Good times in Delft!

That's it from us, hope you enjoyed it. If you want to know more about the use case please contact us about it!


The Marple team

Powerplay with Marple
September 9, 2021
Powerplay with Marple

Beloved Marple-enthusiasts,

We're back with another blog post, this time on your request!

Two weeks ago we asked you what kind of data you wanted us to visualise with Marple.

Cycling came out as a clear winner. Convenient! We had already planned to kick-off the Marple summer in Spain for a work-from-where-the-sun-shines week. Now we had an excuse to also bring our bikes.

![A Marple meeting in the pool](marple_meeting_pool.jpg)

(Marple working from where the sun shines)

The main reason we cycle is obviously to impress our friends and ex-girlfriends on Strava. Kidding not kidding, [Strava](,they%20love%20even%20more%20fun.)

is a cool application to gain insights in your ride data and compare it with friends.

Strava also estimates the average power output of your ride in watts. This is an ambitious estimate, because next to speed, weight and road gradient (values Strava typically knows), there are multiple other variables that influence power that Strava does not have information about. Think about weather conditions, the aerodynamics of your bike position, whether you are drafting behind your friends (yeah you, Matthias), etc.

As Strava's estimated power output has been at the heart of quite a few discussions within our team before, we decided to put this estimate to a test.

We planned a route, rode our bikes, and [uploaded the ride to Strava](

![The Marple Strava Ride](marple_strava_ride.jpg)

Idris rode the ride with a standard power-meter. Before uploading the ride to Strava, however, we cut the power data from the file.

Then we uploaded the ride data (without the power data) to Strava. Second, we fetched Strava's estimates of Idris' power output from Strava (we found this data easily in JSON-format in the Network section of the developer tools of our browser).

After converting this data to csv-file format (using a plain and simple custom python script), 99% of the work was done.  In the blink of an eye, Marple parsed the csv-file to its databases and in one click we immediately had a very clear view of how the actual power output compared to Strava's estimation.

Setting both metrics to the same scale shows that Strava's estimation is doing a pretty impressive job.


We noticed that Strava's estimated power output is quite noisy. No problem for Marple. With a click on a button, we applied a moving-average to

this data, creating a signal that tells a much clearer story.


By organising our data in different workbooks, and adding different metrics to those workbooks, we gain further insights under the hood of our data.

For instance, we noticed that when the gradient increases, Strava mostly underestimates the actual power output. The other way around, downhill Strava mostly overestimates the power output. As these two tendencies cancel each other out in a roundtrip as ours, Strava's overall estimate is still pretty accurate.

Are there any insights we are missing?

WIth love from Spain,

The Marple crew

Marple empowers Formula Student Team Delft
February 22, 2021
Marple empowers Formula Student Team Delft

Hola los Marple aficionados!

We at Marple like fast cars. More so, we love the engineers who design them!

That's why we're really excited to announce that Marple is working together with the beautiful students of the Formula Student Team Delft (FSTD).

FSTD is designing an electric race car from scratch. Yes, that's as cool as it sounds!

They hope to collect prizes this summer at prestigious racing events in the Netherlands and Germany. Marple helps them to get on top of their test data, showing (visualising!) them the way to an efficient design process and hopefully victory in the races they are participating in.

True Marple insiders will know that Marple's founder and chief MBaerto used to be a member of the FSTD racing team when he was a student in Delft. This makes this collaboration even more special.

Are you also designing an electric race car from scratch?Or building something else Marple sounds useful for?

Make sure to reach out!

Much love a todos,

The Marple team

Marple is selected for POM
December 18, 2020
Marple is selected for POM

Hi there!

We want to share some awesome news with you! We were very very excited that we were selected for the Quick Wins subsidy of POM this week! This will allow us to work together with Dana & Hardt Hyperloop in the form of a pilot. We are extremely happy about how we are able to make time series data analysis for the engineers in those two companies way more fun & efficient!

POM West-Flanders is a government agency supporting private companies to innovate and collaborate with startups such as Marple. This collaboration is a big validation of our conceptual idea that data analysis can be made more exciting!

Working together with Dana and with Hardt Hyperloop is a big deal!

Dana is making drive trains for vehicles (for example: hybrid cars) and during the development of those vehicles, tests are being done to make sure that everything on the new design works before going in production. Dana engineers will be able to analyse their test data in Marple which will allow them to clearly and easily see what goes on, on the test-bench!

At Hardt Hyperloop, we will be able to be part of the next forward jump in passenger transportation. This project is so much in line with what we believe in!  Specifically the fact that engineers are the cornerstone of progress makes us very committed to support the Hardt Hyperloop engineers.

POM Westvlaanderen

Thanks for reading!

The Marple team.

Marple is moving to the web
October 22, 2020
Marple is moving to the web

Hi there!

We have some exciting news again, this time about our product. We are moving from a desktop solution to a server based solution and make Marple a web tool.

A server based approach has many benefits:

  • Data can now be stored in a central location and accessed from all around the world. This enables users to analyse their data from home, which can be quite useful these days.
  • Loading data has never been easier as the data only needs to be processed once on the server after which it is available for everyone instantly
  • Collaboration is now a real thing: you can share your analysis with colleagues, make bookmarks or notes on the data

We will soon launch a demo version online so you can experience the advantages Marple brings. For now, enjoy the short demo video below:

Marple Pivot GIF

Do you want more information about our server product? Make sure to reach out!

The Marple team.

Meet the Marple interns
June 22, 2020
Meet the Marple interns

Hello there!

We've had a busy couple of months since our last blog post. In this post we want to give you an update on two elements: our second test period and our first summer interns. Let's go!

We've had a very successful second test period in May-June with more than 100 users testing our tool and providing valuable feedback. In total almost one hundred billion data points were analyzed by Marple during this period. That's amazing. We've seen new use cases that we find very interesting and open a new range of opportunities. We're currently brainstorming about our product to see if we can capitalize on these opportunities. But more on that in our next blog post.

Our team is expanding! Since the beginning of July we've had Flor and Liesbeth joining our team as summer interns as part of their study. Flor is improving the data handling of Marple by adding support for more data types as well as improving the internal data structure. Liesbeth is researching how we can improve on our current data subsampling techniques. They've only recently joined our team but are already making valuable contributions to Marple. It's great to have some extra (wo)man power in our team!

Of course, a team is only a team once there is a team photo, so we lined up on a nice piece of grass.

Marple team with interns

Cheers and see you next time!

Matthias & Nero

PS: Mandatory jumping picture as a bonus (Flor almost went into orbit on this particular attempt)

Marple joins imec.istart
May 8, 2020
Marple joins imec.istart

We are very happy to announce that Marple has joined the imec.istart accelerator programme! Imec.istart is a startup accelerator in Belgium with a focus on tech startups. Therefore, it is a perfect fit for our company. The accelerator is a branch of IMEC, a renowned research center with a focus on microelectronics.

Imec.istart will support us in various ways including funding, coaching & mentoring, workshops and access to its large network. To top it off, we will be moving our offices to a co-working space in Antwerp. We look forward to joining a community of fellow startups when the corona dust has settled down.

Matthias & Nero

Pilot testing
March 6, 2020
Pilot testing

Hi all!

It's been a while since our first post, but a lot has happened since.

Our pilot testing phase has officially kicked off! The first version of Marple is now ready and is being tested by various pilot testers. We already gathered feedback from them about what parts they really like, what features they are missing... and a bug once in a while. It's super cool to see how Marple is being used by the pilots and we can already notice that Marple is providing new insights in their data.

We've also put some time in the business side of things. We practiced our pitching skills and had a deeper dive into our marketing plan and strategy. In the coming weeks we will give our website an upgrade. Not only did a lot change over the last months, but we will provide more content about our startup and the product on our website.

Lastly, we have some exciting news. However, we'll leave that for the next blog post once we can tell you every detail about it! But we'll give you one key word for now: business accelerator (oh that was two words...)

See you on the next blog update!

Matthias & Nero

Hello, blog!
January 3, 2020
Hello, blog!

Welcome to the first post of Marple! I must say, it's quite exciting making a first post. In this post we would like to give you an update on our progress, challenges we are facing, our current planning and our vision on future blog posts.

In the last two and a half months we have been very busy with the technical development of our product. So far we are on schedule with our initial planning. We already managed to use our tool on some actual real-life data and perform some analysis on it. We were very happy to see that our tool is already showing its potential. Being ahead of schedule meant that we had some time to work on marketing. We made a nice and shiny new website that we are really happy about. Make sure to check it out at

We had good Christmas and New Year celebrations and are ready to start on the final development of our tool where we will add more features that make Marple even better. In February we will do a first test with 20 confirmed pilots. They will use our product and give feedback on what they miss or would like to see different. We can always use more pilots, so if you think the tool fits your needs and you would like to give it a go, please let us know!

We are planning to make more blog posts in the future. Some of the blog post will be progress updates, like this one is, but we will also make more technical posts about data processing, data handling or other topics we like to share with you. So stay tuned!

Don't hesitate to reach out to us if you have any questions.

Happy 2020 from the Marple team.

Nero & Matthias