I have a complete design. 4 channel, optically isolated, and accurate. I
need help writing the driver. loop power is totally isolated to protect the
beagle.
On Tuesday, July 9, 2013 at 12:10:44 PM UTC-4, khuy...@gmail.com wrote:
>
> Hi, did anything ever come of this?
>
> On Thursday, July 22, 2010 1:15:46 AM UTC-4, Yann Ramin wrote:
>>
>>
>> I have been working on scratching a personal itch with the BeagleBoard
>> and thought I would make an announcement to see if there are any other
>> people interested or with the same problem.
>>
>> The expansion board (dubbed the Hardhat) is an industrial analog I/O
>> board, for interfacing with various "process control" pieces of
>> equipment (RTD transmitters, VFDs, etc). Its an all-inclusive board
>> with 4-20mA and 0-10V inputs and outputs (sourcing 4-20mA
>> transmitters), an RS485 half duplex port (for MODBUS) as well as
>> accepting a 24V power input to run the whole thing (BeagleBoard
>> included).
>>
>> I'm busy documenting the design as is and awaiting prototype boards.
>> The design will be under an Open Source Hardware license (likely CC-SA-
>> A).
>>
>> More information can be found here:
>>
>> http://stackfoundry.com/beagle_hardhat/
>>
>>
--
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