A kitchen table goes, another comes

I'm moving out of my appartment.

Since my kitchen table couldn't go with me, I left it, so you won't have the marvelous tablecloth full of little cakes anymore. :'(

Hopefully, in my room where my mother lives, my desk is an old kitchen table. So in the end, I'm still building stuff on a kitchen table, which is nice.

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Flashing an STM32 "Blue Pill"

Flashing this STM32 "Blue Pill" board took me 5 hours. I finally recieved my microcontrollers. I have at disposal : A brand new WeMos D1 Mini (it's a smallish NodeMCU) An Arduino Pro Mini (it acts just like a Leonardo, but it lacks some interesting pins sadly :( ) An STM32F103C8T6, I'll call this the Blue Pill for short. The Arduino Pro Mini has an Arduino bootloader out-of-the-box, so I could play with it directly. It's nice ! Still, it lacks the double Serial of the original Leonardo, and most importantly, there's no A4 and A5 pins, so libraries for I2C won't work without modification. But the Blue Pill needs more work. Basically, I followed the instructions on this site : http://wiki.stm32duino.com/index.php?title=Installation Since it's quite complicated, consider the following as a tutorial to set up your Blue Pill. I tried different things, the following has worked for me. Before doing anything software-related, while reading the B...

KaRadio DVT-01

I packed everything in my little case. It's really a mess in there, with cables flying around and every card floating, not fixed on the inside. But it looks quite cool ! I removed the old radio antenna to use its hole to pass my USB cable. Here's how it looks ! As you can see, I let the rotary knob (it's a simple angular potentiometer, in fact) from the amplifier out. It holds with a little nut that was provided with it. The buttons you can see are all fakes, they belonged to the old radio and I forgot to remove them (in fact they're simply glued to the back). Maybe I'll find some tools to make a nice-looking front panel when my stuff arrives. I'll ask people around me to lend me their tools... In the end, the radio would have a 20x4 LCD screen to display artist + title and useful infos (like the IP or the volume when you change it from the website, maybe). I think I'll need two more buttons to change the station. I won't...

Start of a blog - KaRadio Project

Hello everyone ! I decided to start a blog to keep a track of my electronics stuff I want to build. I found the KaRadio Project, that aims to build a webradio - you know, the thing, not the stream. A real object that connects to the Wi-Fi and plays your favourite radios. Some useful links : KaRadio's GitHub : https://github.com/karawin/Ka-Radio The Hackaday Page : https://hackaday.io/project/11570-wifi-webradio-with-esp8266-and-vs1053 The KaRadio Group on Facebook (very active !) : https://www.facebook.com/groups/162949914181385/ As I tried a first prototype, I was really amazed what the main chip, the ESP8266, was capable of. So I decided to buy second-hand stuff in flea market to build a nice little webradio. For the moment, I have my prototype working, but most of the work lies ahead : adding control through a second microcontroller (MCU for short), adding buttons, pushing everything into a case, adding energy support... heh, I'm hyped ! Nonethele...

Electronics on the kitchen table

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