Archive for the ‘3Dp’ Category.

KWeld spot welder

I recently bought Kweld spot welder kit for all battery welding purposes. The old, transformer welder was not good and welds were not consistent and reliable. Worst issue with transformer welder was inability to weld thicker metal strips (0,3mm Ni).

The Kweld came with everything needed to start welding except power supply source. They offer supercap bank with charger or recommend some RC batteries. I had niether. The most suitable battery pack I have was 3S1P LiFePo pack with internal resistance of 5mΩ. Unfortuantely such source is not OK for kWeld.

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GoPro Session 3D printed housing

I broke the original housing for GoPro Session (the smallest GoPro). Then I designed more bulky one, suitable for 3D printing.

Here is the OnShape project.

and 3D printed part…

Please send email for STL files.

Final version with holder for quick release gooseneck:


Outdoor housing for Telraam Traffic counting camera

I recently found interesting project https://www.telraam.net/ It’s an open source project where a Raspberry Pi with camera counts traffic passing by (pedestrians, bicycles, cars and other heavy vehicles). The device is (as stated by authorts) “mounted on the inside of an upper-floor window with a view over the street. To send the traffic count data straight to the central database, the device needs a continuous Wi-Fi connection to the internet.”
I placed one in my home on the window and it started counting some day after installation.

Next I wanted to install one in my remote location, where I have internet for other IoT purposes. There is no “upper-floor window”, which means I should place my raspberry and camera outside. Here is how I did it…

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Low cost solar radiation shield

The solar radiation shield is a low cost DIY device to protect temperature, relative humidity and other sensors from the weather, while shielding them from the sun for highest accuracy. Provided here are instructions and files. It require some CNC machinig, but then it could be assembled in minutes. It is made from plant pot saucers.

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Toothbrush stand

I designed simple two pice toothbrush stand for 8 brushes. In our large family it is sometimes hard to track the toothbrushes only by color. I decided to put this issue in order by ordering the brushes with two simple 3D printed parts. Front one has magnets for removing from the shelf when needed due to cleaning.

Holder in place used in bathroom

Model files are in this file: STEP, PARASOLID and Solidworks

3D model with bathroom shelf

Two pieces for 3D printing

Two magnets (12mm dia, 2mm thick) are attached with epoxy into front holder. Add two more magnets and attach with epoxy to the uderside of the shelf as shown in the first picture.After curing/drying the holder can be removed and cleaned.

Rear holder is attached with two side self adhesive.

Grabcad project: https://grabcad.com/library/toothbrush-holder-8

Please share if you like the idea.

 

 

RAK811 3D model and plastic housing

There was no3D model for RAK811 breakout board with GPS tracker, so I made it from the drawings. I added plastic housing to be used with velcro straps. I prepared two models, one with only RAK811 and small LiPo battery and second one, 4mm higher with enough space for additional PCB with custom electronics. Enjoy.

Higher version with additional PCB

Lower version without additional PCB

Base is same for both versions.

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Multicolor signal light with beeper

When debugging algorithms in an autonomous vehicle a light that can show algorithm state in real time was proven to be effective for easier debugging and additional insight to what is going on in the code.

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Raspberry pi camera housing

This is housing for R.Pi camera V2 with LED illumination.

Camera housing

It is 3D printable housing and PCB with 9 IR LEDs with enable.

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3D printed Loop antenna

Branko, one of the famous experts for old(ish) radio devices designed magnetic loop antenna, which can be 3D printed. Here are complete instructions in german language:

Germany-Flag-iconLoop Antenne aus dem 3D-Drucker

Slovenia-icon Slovenski opis (in Slovenian language)

Housing for ST-Link V2 on a single sided DIY PCB

“Quick and dirty” design of the housing for ST-Link V2 on a single sided DIY PCB is available on GrabCad and  __H__E__R__E__

h1 h2 h3 havzing