Categories

• Announcements
  

  Announcements regarding our community

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  J

  @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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  Posts

  J

  Could you re-post your question and we will get back to you as soon as possible. Thanks !

• Rodeostat
  

  Forum for discussing the new open source potentiostat shield

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  Topics
  131
  Posts

  C

  Thank you for the replying. However, in the figure shown in the "constant voltage" test, I expect the Y-axis to be measured current instead of potential. Can I have current as the Y-axis?

• Cheapstat Potentiostat
  

  Forum for discussing open source potentiostats

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  Topics
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  P

  Hi...i am a new user here. As per my knowledge potentiostats are the foundation of modern electrochemical research, they have seen relatively little application in resource poor settings, such as undergraduate laboratory courses and the developing world. One reason for the low penetration of potentiostats is their cost, as even the least expensive commercially available laboratory potentiostats sell for more than one thousand dollars.

  pcb printing and assembly

• Electrophoresis and Gel Imaging
  

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

  25
  Topics
  59
  Posts

  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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  9
  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

  8
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  23
  Posts

  M

  @Will-Dickson Thank you!

• General Discussion
  

  A place to talk about whatever you want

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  Topics
  8
  Posts

  J

  Hi Greg,
  Thank you for your kind words about our work and for reaching out ! We will definitely take a look at the openhardware.science website, thanks. Your work sounds very cool, and we would love to chat further. We sent you a message on here so look for that and hopefully we can connect and chat soon !
  Best,
  Jo

• Shields & Breakout Boards
  

  Forum for discussing the IO Rodeo colorimeter

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  Topics
  9
  Posts

  W

  @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