(2017-08-31, 01:23)JupiterJoe Wrote: What kind of power supply are you using?
The previous chart is from the power supply Samsung 5V, 2.0A (from the Samsung Galaxy S2 tablet).
Below are charts from another power supply: Samsung 5V, 1A (from Samsung Galaxy S4 mini smartphone).
The voltage often jumps as shown in Figure 2. Despite this, this new power supply seems better.