DSO112A Chassis to hold 18650 Batteries

thingiverse

The eagerly anticipated chassis for the DSO112a pocket oscilloscope with kickstand and battery holder has finally arrived. Originally, the scope came equipped with a 1120mAh battery; however, its tendency to run out quickly had become tiresome, prompting me to upgrade to TWO 18650 batteries. While this design may appear bulkier at first glance, it is carefully crafted to be held securely in two hands and sit comfortably upright on a desk. A built-in kickstand allows the device to sit with a slight incline, making it easy to view from various angles. Although the kickstand's performance leaves something to be desired, it functions adequately. It is essential to note that support material may be present, which can impact its stability. The chassis features an internal spring plate that sits atop the mount holes, ensuring that when pressure is applied to the screen, the force is evenly distributed through the back of the device. This was a challenging design element to perfect. When assembling the chassis, it is recommended to use 0.05mm resolution on the stand-offs where they interface with each other. Similarly, using 0.05mm resolution on the roof (the sloping back) can help eliminate any stair-step effects that may occur. Furthermore, precise tolerances are crucial when fabricating the button, so it is essential to use 0.05mm resolution in this area as well. UPDATE: A revised version of the chassis has been developed, which maintains a secure fit for the display, addresses tolerances related to the kickstand and button, and improves overall performance. To assemble the chassis, you will need the following parts: Four square M3 size nuts M3 screws, with at least 8mm length (although longer screws can be used) 18650 battery clips, which can be sourced from Aliexpress Specifically, you can find these components at the following links: Square hex nuts: https://www.aliexpress.com/item/32875607040.html 18650 battery terminals: https://www.aliexpress.com/item/32841626410.html A good set of M3 screws and nuts (use the 8mm options): https://www.aliexpress.com/item/32802231194.html For optimal performance, I recommend installing the battery springs at the top of the chassis to maintain a lower center of gravity.