I wanted to have as compact, small and flexible a laboratory power supply as possible with a maximum output voltage of 32 V and 5 A. It was especially important to me that it should be completely passively cooled. So I can use it overnight to charge different batteries without being disturbed by the noise …
Tag archives: 3D Druck
Optimization of the extrusion temperature with a heat tower on a Creality Ender 3 Pro and the Prusa slicer
In 3D printing, the extrusion temperature, i.e. the optimum melting temperature of the filament plastic used, is of considerable importance. Manufacturers usually specify a recommended temperature range for this. Depending on the material, this can be very low, such as with Polylactic Acid (PLA), at ~210 °C or very high, such as Polyetheretherketone (PEEK) at …
Laboratory power supply for monitored USB power feed
Power supply via USB is practically an industry standard for many devices nowadays. Originally only intended to supply power to small devices such as computer mouse or keyboard, the USB connection is now operated without a data line practically as a universal 5 V socket. Here, the intended limit ranges for voltage and current are …
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Repair buckle suitable for Ortlieb bicycle bags
4,45 € plus shipping The buckles on both sides of my Ortlieb OFFICE-BAG bicycle bag are broken (like so many others). This means that the bag can no longer be closed.Since the buckles are sewn into the tabs of the lid, it is not easy to replace them. Either the flap must be cut open …
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Inside caliper with scale
For a customer order, I was to insert an intermediate layer within a flower vase at a certain height. Due to the height and shape of the vase, which tapered downwards, it was practically impossible for me to determine the inner diameter at the defined point.What I needed was an inside caliper. Because of the …
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 …
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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 …
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 …