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GaudiLabs / OpenDrop

Open Source Digital Microfluidics Bio Lab
GNU General Public License v3.0
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Droplets are not moving #5

Closed tomdertech closed 6 years ago

tomdertech commented 7 years ago

Hi,

I have recreated stripped down opendrop (although at the moment I am using an external HV PSU). I do not have the screen and I have disabled the joystick. I have defined a start position drop[0].begin(1,3) and have set the code to loop between shifting right one position and then back left one position, however my droplet does not move.

Testing & Setup

Electrically I have proven that the voltage switches between the electrodes I expect. I have added a 3 second delay between each transition.

I have used Saran wrap pulled tight and held in position with double sided kapton tape. I have used a silicone oil on the electrodes and RainX (car windscreen repellant) as the hydrophobic coating on the droplet side of the saran wrap - you can see this here with the droplet. img_20170612_163716

I have used ITO coated glass and used the copper tape method to connect to it. The conductive side is treated with RainX and faced down against the droplet with some tape to pack it. This can be seen here. img_20170612_163753

And when it is all together it looks like this img_20170612_164126

But the droplet does not move ... what should I try/am I missing?

Thanks. Regards, Tom

GaudiLabs commented 6 years ago

Follow the instructions here: http://www.gaudi.ch/OpenDrop/?p=116 Urs