Meter from Aldi is so-so
A while ago, I made a batch of digital voltmeters for Christmas presents.
What I failed to do, was to make one for myself.
So when I saw Aldi was selling something similar, I had to go and get one.
Here it is, a bit narrower than my effort, and a lot longer:
Nice robust leads and good crocodile clips.
Rated from 5V to 30V.
As an indication of accuracy, it transitions from 9.2 to 9.1V at 9.09V measured on a DVM, so it looks like it is reading at least 0.1V high. Sadly, there is no facility to tweak the reading.
Frustratingly, and despite having red and black leads, it reads the same which ever way around the leads are connected, so it is impossible to identify the polarity of a source.
It is sold as a vehicle tester, but it is not really accurate enough to check charging volts, for example. And on the back is a chart which says 12-5-15.9V is too high for a vehicle, while I think anything up to 14.4V is perfectly good when charging – maybe I am wrong?
It needs breaking open (case is glued) and tweaking to improve the accuracy, and maybe to add a polarity LED (so it is going to end up in a draw, isn’t it Alice).
Not as good as mine!!! Although its leads and clips are better.