I finally could tick off the final to-do for my Pico-Arduino project: It is not necessary any more to install the project in advance. The project can now be treated as library and you can just pull it automatically from github with the help e.g. of a cmake fetchcontent. Here is a simple example: cmake_minimum_required(VERSION 3.19.2) set(CMAKE_C_STANDARD 11) set(CMAKE_CXX_STANDARD 17) include(FetchContent) FetchContent_Declare( arduino GIT_REPOSITORY https://github.com/pschatzmann/pico-arduino.git GIT_TAG main) FetchContent_MakeAvailable(arduino) project(use_as_library) add_executable(use_as_library use_as_library.cpp) # Pull in our Read more…

Microcontrollers are not suitable to develop and train machine learning models. The resources are just not sufficient for this, but it is possible to use and deploy pre-trained models! I have added a simplified Tensorflow hallo world example where the model has been trained on the sin function, to my Pico-Arduino framework. The solution consists of only 3 implementation files: tf_hallo_world.cpp contains the Arduino sketch tf_hallo_world_model.h contains the (binary) trained model. CMakeLists.txt is used to Read more…

Most Arduino based Drone projects are optimized for AVR processors by writing directly to registers and use other AVR specific functionality (e.g. timers interrupts). The multiwii project is a good example of this and it would take quite some effort to convert it to be compatible with the Pico, because this logic is distributed all over the place. I “adopted” the CodeDroneDIY project because I only needed to replace the MotorsSpeedControl.cpp with a implementation which Read more…

I am quite enthusiastic about the new Raspberry Pico. However I find the C SDK not very friendly and I prefer to have something as simple as the Arduino API. I did not want to wait for the official Arduino support – so I started my own project. PWM in the Pico I was struggling quite a bit to have PWM working properly and the Pico PWM API is pretty nasty because you have to Read more…

I am quite enthusiastic about the new Raspberry Pico. However I find the C SDK not very friendly and I prefer to have something as simple as the Arduino API. I did not want to wait for the official Arduino support – so I started my own project. The major weak spot of the Pico compared to the ESP32 is the missing Wifi and Bluetooth functionality. I finally managed to add examples for the HC05 Read more…

I am quite enthusiastic about the new Raspberry Pico. However I find the C SDK not very friendly and I prefer to have something as simple as the Arduino API. I did not want to wait for the official Arduino support – so I started my own project. So far this has been just a Toy Project, but with the addition of SPI, we can now take on some more complex Arduino projects. In order Read more…