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Raspberry Pi

687 posts
Introduction Pre-built Double Precision MicroPython Firmware Setting up the PC to build MicroPython Firmware Building a Release Version of MicroPython with Double Precision Building Latest Snapshot version of MicroPython with Double Precision Example Double Precision Output Summary   Introduction The Raspberry Pi Pico can be programmed in different ways, and the Python language is quite attractive. Code can be immediately typed at a prompt (known as a shell or co ...
Introduction Working with the Pi Pico and CircuitPython Circuit Code Main code update_rotval function update_speedrange function Summary   Introduction This short blog post covers how I got a display and rotary encoder functioning with the Pi Pico. The information here could be useful for many scenarios where a value needs to be dialed in, for instance, to control motor speed or to adjust the frequency of a circuit. My current use case was to control frequenc ...
I made a post about this Raspberry Pi focused project A Raspberry Pi project for childhood Educators...that doesn't cost a dime. and received some positive feedback. The event is open for another year. Maybe someone in the community is interested in participating.   There are two challenges for Astro Pi, ranging in length and complexity: Mission Zero and Mission Space Lab. Young people can participate in one or both. In Mission Zero, young people write a simple Python program that takes ...
I bought an AmScope trinocular microscope several years back and find it handy (but not a necessity) for the electronics I do.  Another reason I bought it was to entertain the grandkids and perhaps interest them in the natural world.  I like to use it with the eyepieces because of the stereo but the kids can't really get it adjusted correctly and from time to time it would be nice to capture an image or take a video.  A decent microscope camera costs $200 USD and up so here I look ...
I need a few more analog inputs on the RPI Pico for part of my upcoming Project14 build.   The venerable CD4051 seemed like a good fit, will run on 3.3V and is available in a 16-DIP package. Today I popped over to my local electronics/hobby shop (Sayal). I ended coming home with a 4051 Analog-Mux with a 1995 date code, from a semiconductor supplier I not familiar with AVG Semiconductors.   I wired up a resistor ladder long the 8 inputs just to give it a test run.   With a ...
Does anyone have any insight into lan78xx usb driver support for the Raspberry Pi?   I am attempting to use a Microchip PoE USB-C device to enabling networking to a Raspberry Pi4B. The work is part of a RoadTest for Microchip PoE to USB-C® Power and Data Adapter .   A quick check with a command line lsmod shows no lan78xx driver. There is no /lib/modules/5.10.17-v7l+/kernel
et/usb to support the lan78xx as suggested in some posts I have found.   I did find this post https ...
The Raspberry Pi computer, Ed, made sleep difficult for an astronaut due to its LED display. (Image Credit: Astro Pi)   The Raspberry Pi Foundation outlined how its hardware ran thousands of programs developed by young students to the International Space Station. The European Astro Pi Challenge provided young people with the opportunity to develop programs running on Raspberry Pi computers aboard the ISS.  It offered two options for them to choose from, Mission Zero and Mission Space ...
Introduction Examples FIFO Blocking routines Non-Blocking (Polling) for FIFO Summary     Introduction  Earlier this week, I spotted that Arduino had updated their ArduinoCore-mbed Boards Manager files for Arduino Mbed OS RP2040 Boards to version 2.1.0.     The exciting part of this update is that it includes the pico-sdk multicore library, which I have been eager to try out for some time now.   Unfortunately for Arduino fans, there is no rea ...
The Amiga was one of my first computers, and now I'm fortunate enough to own an Amiga 500 and Amiga 1200 with various add-ons. Though I have to do some repair to get the disk drive working again (aging capacitors) I'm keeping an eye on the custom hardware scene for it, of which it is pretty plentiful because it's very hackable.   Along comes an Altera based interface board that replaces the boot ROM of the Amiga 500 and uses a Raspberry Pi to load up the necessary parts to instruct the Ami ...
ralphjy

SparkFun Pro Micro RP2040

Posted by ralphjy Top Member Apr 23, 2021
Now that I've discovered that I can program the RPi-Pico using the Arduino IDE (with Arduino-Pico or Mbed libraries), it's time to branch out and try some other RP2040 boards.   The board I think that I'll may use a lot initially is the SparkFun Pro Micro RP2040 .  It has a good tradeoff of size, cost and features.     I like the smaller size, the USB-C and Qwiic connectors, and the addition of a Reset button and a NeoPixel LED plus 16MB of external flash memory.  It ...
When I wrote my initial blog about the Arduino-Pico library, fmilburn mentioned that Arduino had just released an Mbed library that had support for the RPi Pico https://github.com/arduino/ArduinoCore-mbed/releases/tag/2.0.0 .   The github installation instructions require cloning the ArduinoCore-mbed repo and the ArduinoCore-API repo and then adding a symlink to that API.  I had been wanting to use the Mbed RTOS functions with the Nano 33 BLE Sense board, but I guess I'll try it w ...
Time to try using the Arduino-Pico library to program the RPi Pico using the Arduino IDE.   I thought it would be good to try the NeoPixel Ring that I had previously tested using MicroPython Happy Pico Pi Day .   But first I am going to use one of the included examples to verify that I got the installation correct.  I am using the TalkingToMyself example that uses both I2C interfaces, have one master and one slave and send data both ways between them.   Pretty simple test. ...
ralphjy

Arduino-Pico

Posted by ralphjy Top Member Apr 14, 2021
I just discovered that there has been a port to use the RP2040 in the Arduino IDE.  Not official Arduino release...   https://arduino-pico.readthedocs.io/en/latest/ https://github.com/earlephilhower/arduino-pico   I've installed the Board configuration   I'm going to try to see if the examples work with the Pico and my SparkFun boards.  Probably get to it later this week.   Thought others might want to try it out. ...
If you wish to use your Raspberry Pi to stream services like Netflix, support for accomplishing this task is now incorporated into Raspberry Pi Operating system.   https://blog.vpetkov.net/2020/03/30/raspberry-pi-netflix-one-line-easy-install-along-with-hulu-amazon-prime-disney-plus-hbo-spotify-pandora-and-many-others/comment-page-4/#comment-468064   I have been making the changes described on VPetkov.net site to the Pi native Chromium browser in order to use Britbox Streaming servic ...
The Pi-Top 4 hardware used in the project described in this blog post was provided through a contest at pi-top [4] Unboxing - Karen meets the pi-top 4! . In response to our STEM project being selected, I felt it was important to make a blog post documenting our success once the project was underway.     The object of the project was to expand Physical Computer Club members networking knowledge. The drawing was the starting point for students to develop the knowledge to understand ho ...

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