Archived posting to the Leica Users Group, 2003/02/23
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]For all you expecting to use FPGA in a future incarnation of a M7 control circuit, I recommend you think through the problem of converting the analog voltage picked up by the light sensor and converting it to digital so the digital control parts can do their job.....There is not to my knowledge an FPGA that has an A/D converter block. Sure, it is possible to use an FPGA plus an external A/D, but now the size is bigger and the power greater. OTOH, for about $1 you can buy a low end uP ( uController) that has a built in A/D, lots of registers for counting time, digital outputs for running LED's and motor/solenoid control circuits, and is programmable. It runs on low voltages and low current. If Austin can find out the answer on the electronic contents of the M6 and M7 shutter control circuitry, we will have a definitive answer ( from the horses' mouth).... Frank Filippone red735i@earthlink.net - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html