Building a DIY High Density Philips Hue LED Stripe

Philips Hue Smart LED stripes are great, but they have a disadvantage: the LED density is rather low: one LED cluster (WW, RGB, CW) every 55 mm. This leads to the problem that individual dots might be visible if the LED stripe is directly visible. Even if the LED stripe is used for indirect ambient light it means that individual dots might still be visible on the wall or ceiling. The solution is to create a ‘high density’ Hue smart LED stripe:

Normal vs High Density Philips Hue LED Stripe

Normal vs High Density Philips Hue LED Stripe

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DIY Portable Video Conference, Sharing and Teaching Device

COVID-19 is by far not over, and in Switzerland the infection rate is going up again (2nd wave?). During the spring 2020 semester university lock-down we moved pretty much everything to a ‘distance learning’ setup. With that experience and with the request to prepare for the fall semester, I have constructed a DIY conference and teaching device which should make things simpler and easier: a combination of video camera, speaker phone and a muting device:

Desk with Communicator

Desk with Communicator C2020

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New Version

I’m making progress with the new ‘Billion Light‘ modules (aka V2): the new design is more modular and easier to build and assemble and still looks awesome with the moving lights and clock hands:

Different Enclosure and Arrangement

Different Enclosure and Arrangement

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Behind the Canvas: Making of “60 Billion Lights”

As promised I’m going to share more details about the “60 Billion Lights” project. It is about a project to build a piece of electronics behind a 100×50 cm canvas to show animations or to display information like temperature, humidity, weather, time or just any arbitrary text.

Make it

Writing text

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Copyright Law for Makers and Educators

Maker spaces and ‘FabLabs’ are popular and accessible in many areas. 3D printers are on the cheap, and powerful laser cutters are in the range of the fearless hobbyist. You can get dirty-cheap PCBs from China in less than a week (ok, probably not right now because of Corona virus) and it is easy to SMD solder parts these days with a DIY SMD PnP machine and OpenPnP. With the right equipment and skill set it is possible to build many cool projects. It is very rewarding and a great learning thing. Blog about it so other can learn too. And it even could get featured on Hackaday.

But: The risk is that someone might send you letter about a ‘Copyright Infringement’. Sadly, this is what happened to me for one of my recent projects. I don’t think that ‘take down’ letter was justified, but I learned a great deal what I should have done differently to avoid that situation. So in the end, it was a learning opportunity, which I believe is worth to share. In essence: what can a maker or educator do?

hackaday building a giant meta-clock made of smaller clocks

Hackaday: building a giant meta-clock made of smaller clocks (image: original image from Hackaday)

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DIY ‘Meta Clock’ with 24 Analog Clocks

Human since 1982 claims

“Human since 1982 have the copyright to works displaying digital time using a grid arrangement of analog clocks…”

I’m not a lawyer, but without obligations (imho) I have removed the content.

You can read more of the details here: Copyright Law for Makers and Educators

Thanks for understanding,

Erich

OpenPnP Solder Paste Dispensing Video

OpenPnP (see “Building a DIY SMT Pick&Place Machine with OpenPnP and Smoothieboard (NXP LPC1769)“) is a cool open source framework to run Pick&Place machines. I have mentored and supported Tobias Mailänder who extended the PnP machine with the ability to dispense solder past on PCBs. Below a video (courtesy of Tobias Mailänder) which shows the machine in action:

It is still a prototype, but things are working very well.

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World Stepper Clock with NXP LPC845

I really love clocks. I think this is I am living here in Switzerland. Beside of that: clock projects are just fun :-). After I have completed a single clock using stepper motors (see “DIY Stepper Motor Clock with NXP LPC845-BRK“), I wanted to build a special one which is able to show up to four different time zones: Below an example with London (UK), New York (USA), Beijing (China) and Lucerne (Switzerland):

Stepper Clock

Stepper Clock

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DIY Stepper Motor Clock with NXP LPC845-BRK

This project is about building a stepper motor clock around the NXP LPC845-BRK board. The design is using a combination of 3D printed and laser cut parts and costs below $15.

Stepper Clock Acrylic Face White Hands

Stepper Clock Acrylic Face White Hands

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DIY Wireless Magnetic Levitating Moon Lamp

If your child is making a special wish, you will do everything to make it happen, right? So my daughter’s wish was a ‘moon lamp’. And here is it: a magnetic levitating (MagLev) wireless moon light:

MagLev wireless LED Moon

MagLev wireless LED Moon

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Embedded Computing Conference 2018: Pick&Place Overview Video

To support my talk next week at the Embedded Computing Conference 2018, I have put together a video with the hardware features of that Pick&Place based on OpenPnP machine based on NXP LPC1769 and NXP Kinetis K22. Below is a picture of the current machine:

Pick & Place Machine

Pick & Place Machine

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Sneak Preview: DIY SMT Pick & Place Machine with OpenPnP

I apologize: I have not been blogging much in the past weeks :-(. One reason is that I’m working on a DIY SMT/SMD Pick&Place machine which keeps me busy most of my spare time :-). I admit that this project is not finished yet, but now is the time I can give a sneak preview: a SMD/SMT pick and place machine:

Pick&Place Machine

Pick&Place Machine

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3D Printed SMT Cut Tape Holder

If you follow me on Twitter, then you are aware that I’m working on a larger project building an SMT pick and place machine :-). The fun with this project is that it includes electronics, mechanics and all kind of 3D printing and laser cutting. That machine picks SMD components and places them on a PCB. One sub-project is to build a SMD cut tape holder:

SMD Tape Holder

SMD Tape Holder

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Custom 3D Printed Magnetic Encoder Disks for Robotics Projects

I’m making great progress with the firmware for the new Mini Sumo Robot (see “New Concept for 2018 Mini Sumo Roboter“). The goal is a versatile and low-cost Mini Sumo robot, and the robot comes with the feature of magnetic position encoders. In a previous article I have explained how to mold custom tires for robots (see “Making Perfect Sticky DIY Sumo Robot Tires“), this article is about how to make DIY Magnetic disk encoders.

3D Printed Magnetic Disk Encoders

3D Printed Magnetic Encoders Disks

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Making Perfect Sticky DIY Sumo Robot Tires

Sumo robot challenges are fun. One important aspect of every Sumo robot are the tires: if they are sticky enough, the robot can push out the opponent. In this article I compare different available robot hubs and tires, and how to make DIY hubs and tires.

Selection of Sumo Robot Wheels and Tires

Selection of Sumo Robot Wheels and Tires

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New Concept for 2018 Mini Sumo Roboter

Doing Mini Sumo robot competition is really fun, and there is yet another one coming to end the current university semester. For several years we have used our own sumo robot, and this is the one used in the course this year too. But for future and extended events we are exploring a new robot. I proudly present the concept of the next generation sumo robot for the year 2018:

Sumo Robot with Bluetooth module

Sumo Robot with Bluetooth module

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SQUIX ESP8266 based E-Paper WiFi Weather Station

I’m a fan of all kind of weather stations. When Daniel Eichhorn twittered about his new version using an E-Paper display module, I immediately preordered one. I decided to build a station with a custom enclosure, so here is my version of a 3D printed version, featuring magnets so it can be attached to the fridge:

E-Paper Weather Station

E-Paper Weather Station

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Custom 3D Printed Enclosure for NXP LPC-Link2 Debug Probes

I love 3D printing as it enables me to create custom enclosures for all kind of projects. The NXP LPC-Link2 probe is great, but it lacks a protective enclosure. So I decided to create a custom enclosure. And as 3D filaments are available in different colors, I experimented with red and black and custom painting:

lpc-link2 enclosure

lpc-link2 enclosure

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2017 Spring Semester Sumo Challenge

Video

The spring university semester is coming to an end, and the Infotronic course closed with a Sumo robot challenge. Great challenge, new technologies, innovative approaches and funny designs 🙂

Groot

Groot

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