One 18650 battery instead of eight AA batteries for rc control

The manufacturer has provided eight AA batteries with a cell voltage of 1.5 V for the RC model remote control. These are connected in series to achieve a final voltage of 12 V. Having eight batteries or rechargeable batteries always in stock was too much and too expensive for me.Instead, I redesigned the battery compartment …

Stable and full protection mobile phone holder for motorbike

Introduction Commercially available mobile phone holders for the motorbike are either too unsafe or far too expensive for me. In the case of the former, this is certainly because the manufacturers are trying to sell a universal mount. Of course, I don’t have this problem with my own design and can build an individual holder …

9-button extension for CAD 3Dconnexion SpaceMouse

A CAD navigation tool is a great help for the construction and three-dimensional orientation in a technical drawing. A colleague of mine once said that it later feels like a body part has been amputated when you have to design without SpaceMouse after you have gotten used to it.I use the SpaceMouse from 3Dconnexion for …

Simple spacers for balcony flower boxes

3D printing is the perfect tool to fix little things in everyday life that are always annoying but too time-consuming to fix with other methods. The new brackets to attach flower boxes to the railing of our balcony are (like most things purchased) poorly thought out. I have simply constructed spacers that can be clipped …

Tool for opening car wet batteries

Tool to open the individual cells of a car battery. As a friend of classic lead wet batteries that you can still maintain and refill with deionized water or sulfuric acid, I was always looking for a reasonable tool to open the cells.This tool is suitable for all common car wet batteries. The contact surface …

Universal battery charging slot

Universal battery charging slot for all available types of battery round cells.Any primary or secondary cell can be permanently clamped and connected to a measuring instrument, laboratory power supply or electronic load. The current collectors are pressed firmly onto the battery terminals via the spring, which provides a reliable and reproducible result. This device is …

Sorting trays for stacking with holding frame

Sorting trays with nine numbered compartments. Each tray is 30 x 30 mm, 10 mm deep and has rounded edges and corners on all sides for easier removal of components. Each tray measures 96 x 96 mm and is 11.5 mm high. Three or six sorting trays can be safely stacked on top of each …