BeMap: Bicycle Environmental Mapping device

The BeMap device is an air pollution mapping prototype, featuring GPS tracking and sensors measuring pollution integrated into a lightweight bicycle lamp. The BeMap device was primarily designed for cycle commuters, who can map pollution along their way to work and chose their route accordingly to their pollution exposure.

The BeMap project is open-source, feel free to get in touch if you want to know anything about us!



Just as you would expect from a bicycle lamp, BeMap in also autonomous. The current prototypes use re-purposed batteries from broken Thymio robots! BeMap devices can be charged with a standard USB cable plugged into your computer, a wall socket or a power bank.


BeMap’s sensors measure CO, NO2, temperature and humidity. If you’re willing to take up the challenge, you could tweak the front board to add more!


Transfer your pollution mappings to your computer using a standard USB cable, then keep them to yourself or upload them to share with the community! Current work in progress to bring BeMap data to the cloud with LoRa wireless module.


Unlike most air pollution measuring units, BeMap is designed for moving. The integrated GPS allows BeMap to measure air pollution along a the roads while recording regular data. Why bother with a single air-pollution measurement when you can have your own trail of data?


We are a team of four microengineering students from EPFL, Switzerland. The BeMap project started in 2015 as an extra-curriculum project for a contest.

We share important values and lifestyle choices, and we want to communicate a few of them through our project:

  • Encouraging sustainable mobility in cities
  • Making air pollution measurable and understandable
  • Sharing Open source content
  • Educating people to new technologies
  • Creating new tools for environmental awareness


Benjamin Bonnal

Electronic enginner

An amazing singer, and always smiling, without Benjamin working on BeMap would never be so funny. He love quadcopter, and is always aware of new hack. He does an exelent job at finding components. Back

Micha Burger

Software ingenner

Micha is our truck driver, he also like climbing and walking in the mountain. In the software developement, he was our king in the BeMap team. Every time when some stress arrived, his humour spread his optimist mind. Back

Yoann Lapijover

Electronic enginner

Yoann is a sailor, always on the lake when the sun shine. He does an amazing routing job and some soft debugging. Back

Chloe Dickson

Communication manager

Chloe is an amazing cycliste, she love bike. She care about human being, justice and equality of chances. Like every one on the team she study micro-enginering and is completly crazy about weird robot. Back



Mapping party in Rio de Janeiro

- 12 May 2016

What a smooth orgazination from Swissnex !! As a well oiled Swiss clock the cyclists (including some of the BeMap team) went and ride the city to... more

Mapping party in Sao Paulo

- 7 May 2016

Yesterday the BeMap team was at the Praça dos Arcos Vegana in Sao Paulo to distribute the BeMaps to the voluntary cyclists who took part at the... more

BeMap @ NanoTera annual meeting

- 30 April 2016

Last Monday and Tuesday, the BeMap team was kindly invited to show off the project at the annual meeting of NanoTera. The event took place at the... more

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