Some comments on the DPScope SE scope inputs. (Hope I have this figured right, and I'm hoping Wolfgang will correct me if I'm wrong):
The scope inputs will look like a 1 M Ohm resistor tied to + ~2.8 volts relative to the scope's ground. This won't affect an AC input's reading much, (it's just a necessary quirk in the design of an inexpensive AC input stage,) but will affect a DC reading (which, BTW, should be made in Auto trigger mode as there are no voltage transitions to trigger on.)
DC measurements (and AC signals with a DC offset,) will be affected by the input offset circuit, but any DC or AC source with an internal resistance or impedance of 10K ohms or less will read very closely to within the degree of accuracy of the scope. Only very high impedance DC sources, or AC signals riding on DC, will have their actual readings distorted by the scope's input offset, with the AC signal portion reading fairly correctly, but the DC offset value being off a bit as the 1 M Ohm coupling tends to pull the input voltage toward +2.8 volts.
I noticed too that the DMM mode will read a DC voltage that would be off the the scope screen a bit, but at some point the DMM displayed voltage value will "freeze" as the A to D reaches either 0 or 256, and the V/div range selector must then be adjusted accordingly.
As the SE scope would reasonably be expected to work as an addition to a test tool kit that starts with a good DMM, it's small quirks when functioning as a DC Volt meter are of no real consequence, and it's nice to know that its scope mode can, in fact, do some convenient DC voltage measurements as well as its intended AC signal work.
That's good news for PICAXE experimenters, who, I know from experience, are forever attempting to look at multiple signals at the same time, often with a bare minimum of test gear.