Important - Migration to Ghost 1.x
Migration to Ghost 1.0...
Read MoreHow to setup an OpenWrt repository
I recently wanted to setup a repository for some custom OpenWrt packages for Respeaker. It seems that it is not so well documented, or at least, I did not found it and I have been helped on OpenWrt forum. Also, it is better to sign packages so...here we go ! Prepare the repository Compile...
Read MoreSTM32 - Custom USB HID device step by step
Step by step guide to do a custom USB HID device on STM32 using ST CubeMX. There is already one page addressing it but without any details for beginners. I will use my custom board based on STM32L0, but any Nucleo can be used by wiring a USB cable to 5V, GND, USB_D+...
Read MoreCustom USB HID device descriptor : consumer device (media) + keyboard
For a personal project I need media keys (play, volume, mute, ...) and a way to lock a computer under Windows (Windows+L keys). There is a lot of HID keyboard descriptors on the Internet, some are for keyboards + media but all contains at least one unused byte... Not a good thing for embedded systems...
Read MoreSTM32 - Log and printf
I am currently using a library which heavily use LOG() functions, which requires to output text on printf() or one of its derivative. As I am also evaluating ST's HAL, I tried to use it instead of low level putc() function. First, we need to be able to use printf() in combination with HAL_...
Read MoreDesigning an STM32L0xx board
After the STM32L151, I now focus on designing a board for STML052. Following are some notes about ST application notes I read to design an STM32L052 board. All documents can be found here. Datasheet, Reference manual, Errata sheet. Hardware development AN4467 - Getting started with STM32L0xx hardware development Hardware Voltage range, p6 Full speed...
Read MoreHow to make a LoraWAN GPS tracker
What can you do in a rainy evening when you go to your hackerspace ? Take a NoteRF V2 PCB, a GPS, a battery and you can make a lora GPS tracker ! Solder the PCB Hand solder it or for lazy guys like me, order a $5 stencil from OSH Stencil. Prepare the rig, apply...
Read MoreLaFraiseVolante - 3D printed tricopter
I finally released the design files of my 3D printed tricopter. Even if code is not so cleaned, full customisation can be done thanks to OpenSCAD. This project was a way to try OpenSCAD for such design instead of traditional CAD like Solidworks and it works really well, it just took me some time...
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