My custom control chain device on a breadboard has stopped being recognised by the MOD Dwarf for some reason (“No control chain devices connected”), although it was working when I have fisrt time put it together. I may have screwed it up at some point in time, so I wonder somebody can recommend a step-by-step troubleshooting guide?
UPDATE: Nevermind, I’ve found a troubleshooting guide here. Trying to follow it.
Also, I have about 4V voltage in my 3,2V circuit, and the reason seems to be the transciever, I’ve found it out by trial and error; without the transciever there is perfect 3.2V voltage in that circuit (I’m using MAX489EPD+ as a transciever). Although everything seems to be wired up exactly as on an Arduino shield schematics. I’m not an expert in electronics, so two-part question here, pardon my ignorance:
- could this higher voltage in the 3.2V circuit have somehow damaged MOD Dwarf’s host control chain?
- any ideas why the transciever increases the voltage?