Expansion of Rodeostat via Multiplexing
On the potentiostat PCB board, there are a couple of multiplexing switches (U9 and U13) on the transimpedance amplifier (TIA).
has a description of a potentiostat that multiplexes
I am putting together a system with 36 bioreactors in parallel, and I want to monitor at least 2 (and preferably 4 concentrations) per reactor. Needless to say, a separate RodeoStat for every single concentration would be out of my price range. Would you consider making an upgraded RodeoStat that does this sort of multiplexing for a premium related to the added value, or should I buy a second RodeoStat and start developing a multiplexer myself.
This is a very interesting idea - thanks for sending me a link to the paper. I think this would be a great way to expand the capabilities of the Rodeostat. Perhaps the quickest and cheapest way to try this with the Rodeostat would be be make a little external expansion board which implements the make-before-break multiplexing. The expansion board could connect the Rodeostat's K1 header for the working, counter and reference electrode connections and to the DIO header "P14" for power, ground and digital control signals. I think this would be a pretty easy expansion board to make as there are only a few components required. This way we could test the idea without too much new hardware. I think I will definitely have a go at designing this expansion board. I will send you a schematic when I have something ready.