Categories

• Announcements
  

  Announcements regarding our community

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  @zahidshar
  We are currently out of Cheapstat stock and at this time we don't have plans to restock in the forseeable future. However, if you want to make one yourself, we do still have the bare Cheapstat PCB for sale here. We are working on updating the Cheapstat documentation to include the bill of materials for this board, so that should be on the site very soon. Let me know if you have any questions about this.

  Going forward we will be focusing most of our efforts on the Rodeostat open source potentiostat. If you are interested in using the Rodeostat or have any questions, please let us know and we will be happy to help !

• Colorimeter
  

  Forum for discussing the IO Rodeo colorimeter

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  W

  @chwang

  If you are on windows you can use Device Manager. Start with the colorimeter arduino unconnected. Open Device Manager. Then connect the arduino. After the arduino is connect in you should see a new device appear in the Device Manager. If you click on it you should be able to get the com port number.

  On linux you can look in the /dev directory e.g. run "ls /dev/ttyACM*" the colorimeter should show up as /dev/ttyACM0, /dev/ttyACM1, ... etc.

• Rodeostat
  

  Forum for discussing the new open source potentiostat shield

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  W

  Nice catch - thanks for posting this. I've fixed the issue and pushed latest version to the repository on bitbucket.

• Cheapstat Potentiostat
  

  Forum for discussing open source potentiostats

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  P

  @Will-Dickson
  Ok thanks. PC1 should be accessible enough to solder.
  And I guess Rodeastat would indeed be much more interesting for my application. But I've these couple Cheapstats already so I'll try to make them work before moving to the next generation.

• Electrophoresis and Gel Imaging
  

  A forum for discussing our open source gel electrophoresis, transilluminators and gel imaging equipment

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  J

  Hi Adrian,
  The gel trays are plain acrylic, not solacryl (i.e. not UV transmissive). So they cannot be placed on a transilluminator. You would need to take the gel out of the tray and place it onto the transilluminator. The combs are Teflon.
  Let me know if you have any follow-up questions.
  Thanks !
  Jo

• Panels Display System
  

  Forum for questions about the Panels Display System

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  Topics
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  Posts

  A

  Oh gosh, you are right! I’m sorry for the delay but I was very busy. I have never thought to rotate the LED matrix because I thought I was right with that (otherwise, if not, no LED would have turned on). Thanks very much! I also take advantage of you for another issue. I have tried to load the arena configuration on the SD card but PControl doesn’t let me do that. Have you any suggestion? It seems that the controller doesn’t communicate to the SD nevertheless at the beginning (when the controller is switch on) PControl finds and initializes the SD card. I’m sorry because of all these questions!

• Online store and Shipping
  

  A place to ask questions about our online store, inventory and shipping

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  P

  Thanks for your answer! I am not happy with it, but thank you.

• General Discussion
  

  A place to talk about whatever you want

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  S

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• Shields & Breakout Boards
  

  Forum for discussing the IO Rodeo colorimeter

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  @fscker

  It looks like the RTL8195 has 3.3V IO. The potentiostat shield powers the MCP4261 with 5V. So you are connecting a 3.3V device to a 5V device - I think. I'm not sure if the IO pins on the RTL8195 are 5V tolerant, but you might want to check. Could be related to you issue.

  Note, the MCP4261's could be powered off of 3.3V. They have a pretty broad allowed input range 2.7 - 5.5V. This would require cutting one trace - the one going to the 5.5V on the shield - and rerouting this trace to to the 3.3V pin.

  The spec sheet for the MCP4261 can be found here. http://ww1.microchip.com/downloads/en/DeviceDoc/22059b.pdf