I am reaching out to MCC to provide some feedback on the MCC 128 and ask for your suggestions, please.
We are using the MCC128 in a portable application with three biomedical sensors and are encountering two issues:
The software settable single vs double sounds nifty, but in reality, we have experienced issues with the hat not always receiving the command during software launch. This is not a setting that I would anticipate changing once a system is built, so for us it would be greatly preferable to have reliable dip switches.
Unlike the USB 230, the MCC 128 does not provide a +5 V line, therefore we took our power from the PI’s bus. Unfortunately, we discovered that the Pi injects enough noise that it just obliterates our smaller signals. We now find ourselves building custom circuitry, particularly to condition the power from the Pi.
Regarding point 1, is there a good way to ensure that the Pi receives the setting command, without having to set-check-reset as needed?
Point 2 is actually a big product weakness, given the idea that the MCC 128 should enable freestanding applications, where there are no convenient linear power supplies on a bench. Do you have any recommended off the shelf solutions? Or should we proceed with building something custom to condition power?
Since MCC is quite near to us, we would be very happy to stop by, show you what we are doing and discuss!