Categories

• Announcements
  

  Announcements regarding our community

  5
  Topics
  13
  Posts

  M

  thank you for this thread, for the new ones, thanks a lot

• Colorimeter
  

  Forum for discussing the IO Rodeo colorimeter

  33
  Topics
  135
  Posts

  P

  Will,

  I followed your instructions on checking the sensor board - and everything is fine now. I'm not sure if it had an impact, but I did switch to a new USB hub that may provide a bit more power than the ancient Mac Mini I was using before. I know that the USB connection can definitely cause issues with Arduinos - but I do not know that it was the cause of this problem.

  Thanks,
  Paul

• Rodeostat
  

  Forum for discussing the new open source potentiostat shield

  54
  Topics
  207
  Posts

  

  @Babak

  With the default hardware and hardware there are four current ranges +/- 1, 10, 100 and 1000 uA. So +/-1000uA is the maximum allowed current range. It is possible to change this but it requires a hardware modification and firmware modification. You won't be able to set higher than 1000uA without these changes. You would need to make these modifications yourself. There are some forum notes on increasing the current range here http://forum.iorodeo.com/topic/67/increasing-current-ranges-to-detect-ma The firmware modifications can be enabled by uncommenting the the #define CURRENT_VARIANT_MILL_AMP and commenting the #define CURRENT_VARIANT_MICRO_AMP in the ps_hardware_variant_defs.h file https://github.com/iorodeo/potentiostat/blob/master/firmware/libraries/potentiostat/ps_hardware_variant_defs.h You then need to reflash the firmware.

• Cheapstat Potentiostat
  

  Forum for discussing open source potentiostats

  31
  Topics
  106
  Posts

  M

  hi, I am new in this forum I am learning a lot, thanks

• Electrophoresis and Gel Imaging
  

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

  28
  Topics
  65
  Posts

  

  @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

  2
  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
  27
  Posts

  P

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

• General Discussion
  

  A place to talk about whatever you want

  7
  Topics
  13
  Posts

  M

  thanks for this contacts it is important have it on sight.
  thanks

• Shields & Breakout Boards
  

  Forum for discussing the IO Rodeo colorimeter

  3
  Topics
  9
  Posts

  

  @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