Ознака: diy

Enabling two color LED on Sonoff Basic R2 Smart Home Switch

1. 12. 22. Самоградња, Сензори 0 Коментара

I like Sonoff Basic R2 Smart Home Switch as it is low priced but very functional multipurpose device. Most of all, it contains ESP8266 chipset which means it is easy to replace original firmware with custom one. I use ESPHome firmware but Tasmota is also good.

By looking at the board of this little device I found out that it contains two-colored LED. Actually, two LED-s are in one package with three contact legs. Green LED is used in factory assembly, and it is connected to GPIO13. The second LED is red colored and not used. It is actually meant to be used by optional RF module. […]
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3D model: Hand circular cutter, cutting depth limiter

29. 8. 22. CNC / 3D print, Самоградња 0 Коментара

I have hand circular cutter made by Parkside (model HG02867). It is useful for cutting rubber, plastic or paper sheets, fiber and similar materials.

I wanted to use it to cut stickers printed on self adhesive paper. Problem was, that it cuts stickers all the way. I want to cut just sticky part. So I made this add-on for the tool that allows me to set cutting depth. It works fine. You can have two sheets of paper on top of each other and set cutting depth to cut just upper one.

Designing this was easy. Tool already had suitable hole where I heat inserted common M4 hex nut using soldering iron (curled brass inset would fit too). […]
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3d model: Zip Tie Pin Holder (customizable)

13. 10. 20. CNC / 3D print 0 Коментара

This is customizable zip tie holder for mounting of pictures or electronic devices at poles or similar objects. It uses mounting hole at the back of object meant to be hanged on nail or screw onto the wall.

I needed way to mount temperature and humidity meter on LACKE housing for my 3D printer. I did not want to drill holes so I got an idea to use zip ties. I needed adapter. So here is the model.

It is done in OpenSCAD and made customizable so you can easily adapt it for any zip tie size and also any mounting hole size. […]
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3D model: Universal Mounting Mask for LCD Modules

5. 10. 20. CNC / 3D print, Самоградња 2 Коментара

This is OpenSCAD customizer that allows creating universal mounting masks for LCD modules. It is suitable for the most popular LCD display modules used in hobby electronics.

There are number of parameters that may be set. However, most of them are set by default to appropriate values. Usually you just need to set dimensions of LCD module.

By default, customizer creates not only mask but also models for mounting plate with matching hole for the mask, simplified model of LCD module and protective glass insert. These can be handy while while setting mask parameters in Customizer.

You can turn of rendering of unnecessary models. […]
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CNC Clamp Screw Locking Improvement

13. 2. 20. CNC / 3D print 0 Коментара

With hobby mini CNC machines you get simple and very cheap clamps that are not easy to use.

It is hard to fasten it because screw turns along with nut, and as screw head is in T-slot of bead it is not easy reachable to block turning.

This is small rectangle peace you can attach to screw head that will block it turning within T-slot.

It makes using clamps much better experience.

You may make it from mdf, wood, plastic, metal, whatever you like.

Download from: https://www.thingiverse.com/thing:4160827 […]
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Dipole Antenna Center Insulator for SO239

9. 2. 20. CNC / 3D print 0 Коментара

Building dipole antennas is always some kind of improvisation. Center insulator is quite simple and may be made in short time with jigsaw and drill.

As I jumped in CNC world I need some simple tasks to learn how to use FreeCAD and other software. So, dipole center piece is ideal just for that. I’ve finished project and learned a lot in the process.

Finished projects is uploaded to Thingverse: https://www.thingiverse.com/thing:4149187

You may use CNC mill or 3D printer to make this part. Pay attention to use material strong enough to survive possible strong forces. […]
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