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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. skappy‏ @skappy1 4 Nov 2012
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      @marcan42 Hi Hector, May i ask you what is the purpose of Vmon on the Openlase pcb please ? Does it only concern ICSP Matter ? Thank you

      1 reply 0 retweets 0 likes
    2. Hector Martin‏ @marcan42 4 Nov 2012
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      Replying to @skappy1

      @skappy1 Vmon is connected to the +24V output from the PSU. The PIC monitors the supply and only enables the laser when it's stable.

      1 reply 0 retweets 0 likes
    3. skappy‏ @skappy1 6 Nov 2012
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      Replying to @marcan42

      @marcan42 @skappy1 Thank you Hector concerning driver board : R2 is 1K ? Is the 1 Ohm big resistor a current limiter ? Thank you once again

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 6 Nov 2012
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      Replying to @skappy1

      @skappy1 R2 in the driver board is 1 ohm, the current sense resistor. With IC1B and T1 it becomes a 1mA per 1mV controlled current source.

      4:57 AM - 6 Nov 2012
      1 reply 0 retweets 0 likes
        1. New conversation
        1. skappy‏ @skappy1 6 Nov 2012
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          Replying to @marcan42

          @marcan42 Thank a lot for your help Hector... Sorry for disturbing you but your Openlase project haunt me for months and months now :-)

          1 reply 0 retweets 0 likes
        2. skappy‏ @skappy1 14 Nov 2012
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          Replying to @skappy1

          @skappy1 @marcan42 Hi Hector sorry to disturb once again. Why have you remove mini for std usb connector?(powering led status?) Thanks you

          1 reply 0 retweets 0 likes
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