Lithium cell powered DSO138 Oscilloscope Case

thingiverse

This is an 18650 cell powered case for the DSO138 mini oscillocope. Charging is done by a standard TP4056 module. Apply some hot glue to keep it in place. A small boost converter is required to step the voltage to about 8V for the scope. There are two paths to run power wires to either the front or the rear of the scope board. I chose the modular way, ie, I plug power into the connector from the front, then run the wires downward beside the buttons and then out the bottom. I also added a 1N4007 to one of the power wires, meaning the scope gets about 7.5 volts. For the front I wanted protection for the LCD, so I cut out a rectangle from a CD jewel case. There's a bezel that holds it in place. I opted for hot glue inside the case to fix the tabs on the bezel. The cutout for the switch is 14x9mm.