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I have already used K8055 Commander in a couple of ways

All the plots on this page have been created using data gathered by K8055 board with K8055 Commander and OpenOffice.org Calc.

To monitor and control charging of lead-acid battery.

In the plot you can see the automatic switch to lower charging current near the 10th hour and the automatic switch-off at the end. The gradual stepping up of current in the begining was carried out manualy. The plot allows thorough supervision of a battery including detecting irregularities in charging current and long term decline of capacity. This time, around 660 Wh have been charged into the battery.

Charging curve of lead-acid battery

To switch periodicaly the air conditioning fan.

This was to confirm the possibility of remotely controlling a fan that had to be switched on for five minutes every half an hour. The red line shows the state of a digital output of K8055 (on or off).

Fan switching and battery voltage

To record the frequency of an AC power line.

Yellow and red lines show average values over longer periods of time. Interesting topic, but the accuracy of this combination of hardware and software may not be enough to truly reveal the changes in frequency and thus loading of the network. I plan to confirm this with a different approach.

AC power line freqency

To quickly measure (scan) an entire range of values.

This is very handy, as you can obtain tens of measurements (or even pairs) in very short time by simply sweeping a pot or a similar control that changes one variable in the system, while measuring the effects this produces. After adding two current sensing resistors to a DC-DC converter and wiring up the setup, I used the single control on my dummy load to get 80 pairs of values of input and output current, then changed the input voltage and repeated the proces four times. This produced all the data needed to draw the plot and confirm that the converter is working properly.

Efficiency of a DC-DC converter