PER Mode: Bucking/Boosting voltage
1. First, you will need to supply the module with some input power (3.5 - 12 volts) and this can be fed through its Type A, Type C or micro-USB port. For these examples and images, power will be fed through the module's USB Type A port. Upon powering it up, the display will read "PER" as the PER Mode (Power Output Mode) is the default mode upon starting up this module for the first time.2. Upon startup of this module, you will see the text "OUT", meaning that this is PER Mode, where you can boost or buck voltages. You will see the voltage reading set to zero as your output isn't on, with the current set to zero as well, because no load is connected.3. If you press the "ON/OFF" button on the module, this will switch the output on, meaning that the designated output voltage which you have set will be outputted to your load. The output current reading will be blinking when no load is plugged in and when the output is off. When you switch on this module, the output will be off by default, so the voltage reading will be at zero volts but when the output is on, the voltage reading will display your set output voltage.4. To set the output voltage, you will need to turn the output on by pressing the "ON/OFF" button once. Then, you can either press the "UP" or "DOWN" button until you have set the designated output voltage, you should see the "SET" word come out on the screen indicating that you can now change the voltage. You can additionally hold either button to speed through the voltages faster. This module can buck and boost voltages so the output voltage can range from +1 - +24 volts. Once you have set the voltage which you want, leave the buttons for 2 seconds to set it in place.5. Now, you can connect your load. You will see the current being drawn from the module's display, but make sure your load can handle the voltage being outputted. The third picture above shows the wiring diagram for your load in this mode.6. If you want to see the power being drawn, make sure your load is connected and your output is on, then hold the "ON/OFF" button for 2 seconds to display the output power, instead of the output current. You can do this again to switch back to displaying the output current.7. In this mode, you can also view the ambient temperature which the module senses. You can do that by making sure the output is off, then pressing the "UP" or "DOWN" button once. You will immediately see the ambient temperature in degrees celsius. The current reading will be blinking, but you can ignore the current reading as your output voltage is off anyways.8. You could also switch the backlight off on this module by pressing the "ON/OFF" button for 5 seconds. The module can still function and provide all of its normal features properly, even with the backlight off. You will probably want to turn off the backlight if you are working outdoors or when conditions are bright.9. If you need to change mode on this module, you can do that by holding the "ON/OFF" button for 10 seconds. This will switch the mode to VAH Mode, which is the multi-function meter mode to measure various things. More information about VAH Mode will be described in the below section.
VAH Mode: Measuring voltage
1. First, make sure that there is an input power supply, from either of the three USB ports. I used the Type A USB port as an input power source in the picture above.2. Then, make sure you switch to VAH Mode if you are not in it already. From powering the module up at first, the module will be set to PER Mode by default, but if you then hold the "ON/OFF" button for 10 seconds, you can switch to VAH Mode, which will be used to measure voltage.
3. From here, insert your voltage supply to ports "OUT+ (V)" and "COM". The "OUT+ (V)" port will be used for the positive connection of your supply voltage and the "COM" port will be used as a ground or negative connection for your supply voltage. The voltage reading should immediately be displayed...Read more »