Tags » Design Cycle

Printed circuit for the Music Box

In order to finalize our prototype and our project, we decided to solder the components of the Music box on a printed circuit.

Here is the scheme of the circuit: 317 more words


Music Box prototype

The idea behind this circuit was to model the detection of the fluorescence emitted by the bacteria: if we apply an intense source of light directly to the light-to-frequency converter (which is the same than the one used in the prototype), it models a great intensity of green fluorescence (and thus supposedly a large concentration of Arsenic in the sample). 463 more words


3D printing of the whole double cap

After having printed the connector part of the double cap, the new goal was to print the whole double cap in a single piece.

It presents a major technical problem : how to reproduce the screw pitch precisely enough so that it can match the screw pitch of the vial? 497 more words


First 3D printing of the double cap

The first step to improve the prototype of the double cap was to define the optimal proportion of the double cap connector. To recall, the connector function is to pierce an aluminum seal to allow the flow of the bioreporter into the water sample, after having started to screw the two vials together. 321 more words


Cell lysis protocol

We are interested in the influence of light scattering of bacteria in the arsenic detection. In order to test that we had to purify the GFP from bacterias. 449 more words


Midterm presentation and feedback for the spring EPFL team

We had a chance to share our plans with Prof. Jan van der Meer (UNIL) and Dr. Sabrina Leuenberger (Biosafety expert University of Bern) on the 27 March. 824 more words


Realization of the double cap

After 3D modeling, we try to make a double cap by hand.

We start from the vial caps with a hole covered by a silicon septum. 256 more words