Made using only components from my stock ! Why This Project? For once, this project was not for me... it was for my wife ! Every morning she takes the bus then train to go to work. If she misses...

Made using only components from my stock ! Why This Project? For once, this project was not for me... it was for my wife ! Every morning she takes the bus then train to go to work. If she misses...

I couldn't believe my eyes when I saw how tiny that sensor is ! The Doppler Effect I'm sure you're quite familiar with the Doppler effect: you send an RF signal at a given frequency to a target, and if...

I couldn't believe my eyes when I saw how tiny that sensor is! The Doppler Effect I'm sure you're quite familiar with the Doppler effect: you send an RF signal at a given frequency to a target, and if this...

Or how to try to spend as little time as possible programming several thousands MCUs.... Why.... Just Why? As you may know I started the Mooltipass offline password keeper project more than 2 years ago. Together with a team of...

Or how to try to spend as little time as possible programming several thousands MCUs.... Why.... Just Why? As you may know I started the Mooltipass offline password keeper project more than 2 years ago. Together with a team of...

I usually never use libraries... but made an exception for these quick projects ! I'm pretty sure that most people reading this very article know about the (very) cheap ESP8266 Wifi module. A bit more than a year ago, I...

I usually never use libraries... but made an exception for these quick projects ! I'm pretty sure that most people reading this very article know about the (very) cheap ESP8266 Wifi module. A bit more than a year ago, I...

It's always fun playing with dangerous voltages ! The Idea For quite a while I've had this project idea in the back of my head that would involve using many Nixie tubes. These funny looking cold cathode displays were actually...

It's always fun playing with dangerous voltages ! The Idea For quite a while I've had this project idea in the back of my head that would involve using many Nixie tubes. These funny looking cold cathode displays were actually...

Did you know that most ceramic capacitors lose up to 80% of their capacitance near their voltage ratings? The Idea Not every electronics enthusiast knows that a ceramic capacitor's capacitance changes with the voltage you apply to it. This can...

Did you know that most ceramic capacitors lose up to 80% of their capacitance near their voltage ratings? The Idea Not every electronics enthusiast knows that a ceramic capacitor's capacitance changes with the voltage you apply to it. This can...

I've always wanted to play with these 10W RGB LEDs! The Idea So for some reason I bought 2 IKEA lamps at a flea market. As IKEA furniture has a long history of being hacker-friendly, I figured they shouldn't be...

I've always wanted to play with these 10W RGB LEDs! The Idea So for some reason I bought 2 IKEA lamps at a flea market. As IKEA furniture has a long history of being hacker-friendly, I figured they shouldn't be...

This is one of these "just because" projects... The Idea I'm sure that most of you are familiar with the stroboscopic effect. To paraphrase wisegeek, it is a phenomenon of human visual perception in which motion is shown to be...

This is one of these "just because" projects... The Idea I'm sure that most of you are familiar with the stroboscopic effect. To paraphrase wisegeek, it is a phenomenon of human visual perception in which motion is shown to be...

$120k and a year after my previous article, you might be interested to know what happened behind the scenes... Let's pick things up where we left off I can't believe the Mooltipass project is already more than 15 months old......

$120k and a year after my previous article, you might be interested to know what happened behind the scenes... Let's pick things up where we left off I can't believe the Mooltipass project is already more than 15 months old......

Want a free board? Read below! My regular readers may already know that I never stop working on a project half-way. This is unfortunately the only exception so far, motivated by the fact that an IC isn't doing what it's...

Want a free board? Read below! My regular readers may already know that I never stop working on a project half-way. This is unfortunately the only exception so far, motivated by the fact that an IC isn't doing what it's...

A fun afternoon project with two platforms... As mentioned in my previous blog post I was very optimistic when designing my ESP8266-03 development board and didn't even prototype it before launching a batch in production. As I just received a...

A fun afternoon project with two platforms... As mentioned in my previous blog post I was very optimistic when designing my ESP8266-03 development board and didn't even prototype it before launching a batch in production. As I just received a...

A Wifi platform for $3... who wouldn't want to play with it? For the last few weeks we have been seeing a lot of awesome projects built around ESP8266 Wifi modules: These modules come in different shapes and colours and...

A Wifi platform for $3... who wouldn't want to play with it? For the last few weeks we have been seeing a lot of awesome projects built around ESP8266 Wifi modules: These modules come in different shapes and colours and...

Who knew it'd be possible to use this coil to read NFC tags? A while ago I backed the xNT campaign, which aimed at making an NTAG216 based NFC implant for different purposes. After a few months of waiting and...