Update From kuman 13803K: The sensitivity of DSO Shell has been extended in both directions and is higher and wider than DSO138. It reaches 5mV/div --- 20V/div while DSO138 is only 10mV/div --- 5V/div More Applications: Display and MCU are now mounted on the same board (mainboard) to avoid using inter-board pin-headers, Analog channel is placed on a separated board which contains most user install parts. This brings in better separation between analog and digital circuits. Without the analog portion the mainboard can be used in many other applications Rotary encoder has been added. It makes parameter adjustment much quicker and easier DSO Shell comes with full enclosure. The front panel and top/bottom brackets are flexible for easy user modification Detailed assembly instructions are provided in combination with troubleshooting guide and schematic