Teenager converts Porsche Boxster to electric drivetrain

While luxury carmaker Porsche works towards bringing an all-electric Boxster to production 11 years after it first started thinking about it, a sixteen-year-old from California’s Napa County has side-stepped the long wait (and the high price tag) and converted his own. Joining the likes of Simone Giertz (who, tired of waiting for a Tesla ute, made her own), St Helena teen Isaac Kelly decided that he wo ...

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ELECTRIC WHEELCHAIR MAKES A GREAT BASE FOR A BIG ROBOT

Building robots can be fun, and remains a popular pastime among many in the hacker and maker set. However the hardware side of things can be daunting. This is particularly the case for those attempting to build something on a larger scale. A great shortcut is to start with a robust mechanical platform from the outset – and using an electric wheelchair is a great way to do so. [Nikita] started this project w ...

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Sine wave oscillator using LM741

The oscillators are the devices that generate oscillatory (AC) output from given DC input. There are different kinds of oscillators based on the output waveform they generate. Like ·         Sinusoidal oscillators – they generate sinusoidal (sine) wave output ·         Square wave oscillators – they generate square (or rectangular) wave output ·         Triangular wave oscillators – they generate triangle o ...

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Early Diagnosis Now Possible With Smart Bandage

IoE era is here since we are able now to add mobile radio capabilities in our applications! The latest incarnation of the cell phone network will offer internet connectivity and possibilities that could only be dreamt of previously depending on your standpoint, and many more factors. And now let’s embed these concept in medical applications, like “Smart Bandage” . It is conceivable that sensors embedded in ...

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WISP – Re-programmable Microcontroller That Runs On Energy Harvested From Radio Waves

A new research initiative between the University of Washington’s Sensor Lab and the Technical University of Delft in the Netherlands has created a microprocessor that can power itself through stray radio waves and receive programmable updates in the same fashion. While the RISC-derived 16-bit microcontroller CPU is very weak compared to modern standards, it’s much more powerful than any other device that’s ...

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Send & Receive Radio With A Single Chip

Fitting transmit and receive capabilities of radio signals into one device may be impossible without using a significant filter, which is needed to isolate sent and received signals from each other. The major obstacle to achieve that is the weakness of the received signal compared with the much stronger transmitted signal. However, researchers from Cornell University found their way to jump over this obstac ...

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IM282A-L – 10KM LONG RANGE RADIO MODULE FOR 2.4GHZ BAND

The only available radio chip for LoRa on the market has been the SX1272/76 from Semtech up to now. Things have changed and company IMST came up with the new type of radio chip SX1280 which can work on 2.4GHz band and decided to use this chip for their new LoRaWAN Long Range module, the iM282A-L. The iM282A-L is a compact and low-cost radio module that operates in the 2.4 GHz frequency band and combines the ...

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Arduino and RF from kHz to 1 GHz

We are very excited to announce the RFzero - a multipurpose Arduino RF and GPS controlled platform. The RFzero can generate frequencies from 2605 Hz and beyond 200 MHz. At the same time 28 I/O pins are available and eight of those are via an ULN2803A power driver. For more information please visit http://rfzero.net The typical use of the RFzero is as a beacon (IBP, SPB, CW, FT8, JT9, PI4 and WSPR), Qatari O ...

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RFM69 output power

As I was mentioning in my 1000.1000 Hardware selection, I have opted for the cool RFM69HW radio module. Weirdly enough, in quite a few sources (big distributor and ebay) the higher power HW module is cheaper. So there ie no reason not to get the higher power module, given quantity discounts. But I want it to operate at lower power most of times. The datasheet does not show any differences at lower power, so ...

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ESP32 Internet Radio

The cheap MP3 VS1053 codec processor from aliexpress.com is told to be capable of decoding a variety of music formats, including Ogg Vorbis/MP3/AAC/WMA/MIDI audio. VS1053 is also capable of recording in Ogg Vobis file but all the guidance that is available on Internet are either for proprietary boards or for ESP32-IDF which not preferable to try due to excessive coding. A code more than 20 lines is enough t ...

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Simple Arduino Radio with TEA5767

Ok, before to introduce this project, i want to apologize for my English, my native language is French... Secondly, this is my first Instructable, and it's the first part of a biggest project (a MP3/SD card/USB/radio/bluetooth/clock/alarmclock/temperature/humidity on TFT touchscreen 3.5") So, I was searching for a tutorial to create a simple Radio with Arduino... And all what I found was very complex sketch ...

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Arduino 433Mhz RF Wireless Data Transfer

The most practical and cool way of sharing data from 1 Arduino to another is by far using a radio transmitter and receiver. The simplest form of wireless transmission (I could find) is the 433Mhz ASK modules. They come in pairs, a receiver and a transmitter. They are ridiculously cheap, selling at $1 or less a pair!! These modules provide simplex 1 way data transmission, in order to get a 2 way communicatio ...

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