Categories

• Announcements
  

  Announcements regarding our community

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  A

  You can purchase the Rodeostat on our website here: https://iorodeo.com/collections/cheapstat-open-source-potentiostat/products/potentiostat-shield

  We ship internationally with DHL Worldwide Express.

  Let us know if you have any other questions!

• Colorimeter
  

  Forum for discussing the IO Rodeo colorimeter

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  @Will-Dickson, thank you! It works for me on my Windows 10 machine!

  I did have some initial connectivity issues, and because my Arduino IDE was old, I uninstalled and reinstalled the latest version of the Arduino IDE to get the latest Windows drivers. The connectivity issues disappeared after that and a reboot.

  It even looks looks like you fixed the units issue mentioned in http://forum.iorodeo.com/topic/421/the-colorimeter-app-v4-is-stuck-on-um-but-the-values-returned-look-like-ppm! Thanks.

  I'll be happy to provide bug reports for me and the people I'm working with.

  I'm also looking forward to having a new v0.6 installer for MacOS, but I appreciate that you prioritized the more pressing Windows issues first.

• Rodeostat
  

  Forum for discussing the new open source potentiostat shield

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  @rcbb

  I've been working on firmware examples for the new featherwing. Right now all of the examples use circuitpython. I haven't put in an online repository yet. I will do this in over the next few days. I've been pretty pleased with how well circuitpython has worked for this - very easy and quick to program.

  Right now all of the firmware examples just stream the data back to the host PC over USB. I am also pretty excited about trying to make some standalone devices which use feathers such as the pygamer https://www.adafruit.com/product/4242 which have a display, battery connection/charging, SD card, etc. The rodeostat featherwing can be plugged directly into the connector on back. It seems super nice for making a battery powered portable device. The pybadge is also interesting https://www.adafruit.com/product/4200. I think both are still available from Digikey.

  We should have the featherwing PCBs available in about two or three weeks. There is some uncertainty on when we will receive the PCBs ... not surprisingly.

• Cheapstat Potentiostat
  

  Forum for discussing open source potentiostats

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  I will reply myself...

  I had to install the FT232R USB UART Driver. Then a USB Serial Converter was installed and the port COM3 was installed after updating the driver

  Now, selecting the COM3 port, it works perfectly.

  Hope it can be useful for other Cheapstat users

  Best regards

• Electrophoresis and Gel Imaging
  

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

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  As far as i know it can be used within UK

• Panels Display System
  

  Forum for questions about the Panels Display System

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  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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  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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  D

  I have a similar need. It's probably requires a 64:1 multiplexer. Any input is appreciated!

• 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