Categories

• Announcements

  Forum for discussing open source potentiostats

  5
  Topics
  14
  Posts

  F

  Hi thank you, your thread is very helpful for beginners

• Colorimeter

  Forum for discussing the IO Rodeo colorimeter

  34
  Topics
  136
  Posts

  M

  When I put in my serial port in and try to connect, the program tells me "unable to connect to device: response from device is too short" ... any ideas on how to troubleshoot this for Mac computers?

• Rodeostat

  Forum for discussing the new open source potentiostat shield

  67
  Topics
  234
  Posts

  R

  @rcbb

  Hi, @Will-Dickson,

  I've been running some experiments with the Potentiostat, but I'm getting a lot of noise. At first I thought it was the power source, but I've changed it and still get noisy measurements.
  Noise

  I'm running cyclic test, from 0.5 to 1.2, with volt/sec in 0.05.
  Any idea?

  rcbb

• Cheapstat Potentiostat

  Forum for discussing open source potentiostats

  32
  Topics
  107
  Posts

  R

  I just built five Cheapstats and am trying to burn the firmware onto the chip. I bought the USB AVRISP CH from Waveshare, which is the one recommended in the video by Aaron Rowe (https://www.youtube.com/watch?v=4Lvf63LIMLY). However, Aaron Rowe says at the end of the video "it takes about one minute to flash the product and I will show that next", but he never posted that video. Can someone point me in the right direction as to how to flash the firmware onto the chip? I'm using Windows 8.1. A step-by-step procedure will be ideal, but I would appreciate any pointers. Thanks,

• Electrophoresis and Gel Imaging

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

  28
  Topics
  65
  Posts

  W

  @Rlippert

  I think darktable would be a reasonable option https://www.darktable.org/

  You can find a list of supported cameras here https://www.darktable.org/resources/camera-support/

  There is some information of camera tethering here https://www.darktable.org/usermanual/en/tethering_chapter.html

• Panels Display System

  Forum for questions about the Panels Display System

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  Topics
  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

  10
  Topics
  28
  Posts

  A

  Hi, I wanted to know if you had other international shipping options

• General Discussion

  A place to talk about whatever you want

  8
  Topics
  14
  Posts

  S

  Wavex is created with an aim to serve a user-friendly experience where investors can access a huge range of financial services and products backed by the leading industry’s security processes and insurance protection, and the best cryptocurrency exchange platforms.
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• Shields & Breakout Boards

  Forum for discussing the IO Rodeo colorimeter

  3
  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