by
antonk » Mon Oct 28, 2019 6:57 am
ChristofferBR wrote:
Knowing the electrical protocol for data to/from an instrument doesn't help much unless you also know what all commands back and forth are, how handshaking is implemented and how bulk data is transmitted. This information is usually proprietary. Correct me if i'm wrong, but i would think this exercise is also meant to free up a HPLC system from some specific vendor's proprietary softare/interface cards etc.
Brave person tries to built is-own HPLC system.
There is no need to reverse these protocols (although this is not so hard).
I meant the approach is the same in all HPLC systems and the Arduino is PROPER tool to do the task.
About the pumps:
http://www.akvilon.su/products/analitic ... tayer/688/This russian company sells its own HPLC pump built of:
* Schroff housing
* US-made piston pump module driven by step motor
* Microchip PIC controller which drives the step motor and performs commands of LAB-Alliance protocol.
RU - run, ST - stop, FL 1.5 - flow of 1.5 cc/min ......
I've seen this pump inside, ether as Knauer P61L.
Almost empty box with step-motor driven pump + microcontroller of your choice.
And, YES - Arduino can be used as protocol translator.
Once I even seen microcontroller-based module in GC world which translate HP7673 automatic liquid sampler commands into the language of Shimadzu AOC sampler. I.e. the GC 5890 believe it is working authentic 7673 but it was Shimadzu.