Counterfeit Macbook charger teardown

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Ken Shirriff @ righto.com has done a detailed teardown of a counterfeit macbook charger and show us the difference from a genuine one and why this can be dangerous. He writes:

What’s inside a counterfeit Macbook charger? After my Macbook charger teardown, a reader sent me a charger he suspected was counterfeit. From the outside, this charger is almost a perfect match for an Apple charger, but disassembling the charger shows that it is very different on the inside. It has a much simpler design that lacks quality features of the genuine charger, and has major safety defects.

Counterfeit Macbook charger teardown – [Link]

BIG Clock Made From Six 3″ 7-Segment LCDs

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Pierre Muth build a nice big clock using 3″ 7-segment LCD displays. The clock is driven by a PIC18F87K90 and a few other components are used. He writes:

We need clocks. Once you have passionate activities which absorbs all your attention, if you want to keep contact with the social society surrounding you, it’s crucial to know when we are.

BIG Clock Made From Six 3″ 7-Segment LCDs – [Link]

Raspberry Pi Zero digital frame

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Francesco @ garagetech.tips show use how to use the Raspberry Pi Zero to build a digital frame. Actually he show us how to use it as a USB storage device on an existing digital frame.

Raspberry Pi Zero digital frame – [Link]

Extensive Interactive Whiteboard Pen & Receiver Teardown Analysis

Micah Elizabeth Scott @ youtube.com writes:

My friends at Tangible Interaction sent some electronic whiteboard hardware to take apart. In this video I’ll start to look at the transmitters, receivers, and communication protocol.

Extensive Interactive Whiteboard Pen & Receiver Teardown Analysis – [Link]

ChipStick – A small scale experimental Forth machine

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Ken Boak discuss about his ChipStick PCB build:

The ChipStick design has the following features:
MSP430FR2433 with 15.5K FRAM and 4K SRAM
External SRAM or FRAM device connected via SPI on USCI B0
CH340G USB to serial converter IC on detachable section of board
3V3 voltage regulator
Reset Switch and User LED
20 Pin DIL footprint to allow insertion into G2 Launchpad socket
Programmable by SBW or BSL

ChipStick – A small scale experimental Forth machine – [Link]

How Apple recycles iphones

Apple has designed a robotic arm that is able to teardown iphone and other electronics devices and recycle their components. What the video!

How Apple recycles iphones – [Link]

‘Soldering’ with a laser

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Thijs Beckers @ elektormagazine.com writes about a new experimental method of connecting electronics components together using a laser beam.

Researchers from the University of Saarland have, together with colleagues from Helsinki, discovered a new material which can connect electronic components together using a chemical method. Multiple very thin layers (1000x thinner than a human heir) of aluminum and ruthenium are placed on top of each other. When an intense laser beam is pointed at it, a large amount of heat is released in the nanometer thin layer and a homogeneous layer of ruthenium-aluminide is formed.

This brief heat can reach a temperature of 2000 °C. With this, components close together can be connected to each other without the addition of solder. The ruthenium-aluminide forms a layer between the components, just like solder does.

‘Soldering’ with a laser – [Link]

Improved Arduino Rotary Encoder Reading

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Here is a nice tutorial on how to use rotary encoders with Arduino. Example code is included.

I wanted to use a low cost rotary encoder as an input mechanism for one of my upcoming projects and was initially bewildered by the code options available to take readings from the rotary encoder and determine how many “detents” or cycles the encoder had clicked past and in what direction.

Improved Arduino Rotary Encoder Reading – [Link]

RF Isolator: Teardown and Experiments

In this video, Kerry Wong took apart a 8 to 10 GHz microwave RF isolator and did some measurements. High resolution teardown pictures here.

RF Isolator: Teardown and Experiments – [Link]

NeuroBytes Simulate Dendrite to Axon Input/Output

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Zach Fredin and Joe Burdo has designed an electronic neuron simulator to help educate students of neuroscience.

NeuroBytes are tabletop electronic neuron simulators designed to help students understand basic neuroscience concepts. The platform consists of modular elements that can be freely connected to form biologically representative networks, and has been built from the ground up to be accessible to young learners without sacrificing the depth and sophistication that make it a valuable tool for college-level audiences. NeuroBytes are entirely open-source, meaning both the hardware design and the firmware that controls their behavior is freely accessible to anyone.

NeuroBytes Simulate Dendrite to Axon Input/Output – [Link]