Raspberry Pi Category - Page 14 of 25 - CNX Software

February 16, 2023 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Control 8 relays with the Raspberry Pi Pico using PicoRelay8 or Pico-Relay-B

Waveshare Pico Relay B with Raspberry Pi Pico board

8086 Consultancy’s PicoRelay8 is a baseboard for the Raspberry Pi Pico (W) board equipped with eight 28V DC / 10A Normally Open relays that be used for all sorts of automation projects, while Waveshare Pico-Relay-B also supports eight relays with both DC and AC loads and comes with some extra features. PicoRelay8 PicoRelay8 board specifications: Supported MCU board – Raspberry Pi Pico or Pi Pico W, and it may also work with “mostly” compatible boards such as the Banana Pi BPI-Pico-RP2040 or BPI-PicoW-S3, WeAct RP2040, and others as long as all GPIO used on the PicoRelay8 are exposed on the same pins. Relays 8x HF3FF/005-1HST relays rated for 28V DC/10A, as well as 10A/250V AC and 15A/125V AC, but the board is not designed to get power from the mains (safety-wise), so it’s only really suitable for DC loads Each relay has a 2-pin terminal block attached to it. GPIO […]

February 11, 2023February 11, 2023 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

Raspberry Pi Pico W gets Bluetooth support in SDK 1.5.0

The Raspberry Pi Pico W board was launched with a WiFi 4 and Bluetooth 5.2 module based on the Infineon CYW43439 wireless chip in June 2022, and I wrote a tutorial showing how to connect to WiFi a few days after the launch, but nothing about Bluetooth. That’s because while the Raspberry Pi Pico W hardware supports Bluetooth, we were told that Bluetooth was not enabled at the time, but might be at a later stage. Alasdair Allan, who is responsible for the Raspberry Pi documentation, said Bluetooth support was scheduled very soon, and the SDK 1.5.0 release of the Pico C SDK is now available with Bluetooth implemented using BTstack low footprint dual-mode Bluetooth stack. Bluetooth support is still considered Beta and the SDK 1.5.0 implements the following key features and updates: New libraries for Bluetooth Low Energy (LE) support. Bluetooth Classic support. Bluetooth Sub Band Coding (SBC) encoder […]

February 1, 2023 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

Arduino Plant Watering Kit combines Nano RP2040 Connect with moisture sensor and submersible pump

Arduino Plant Watering 3D Printed enclosure

You’ve probably seen a few plant watering projects based on Arduino over the years, and now the company has decided to launch its own Arduino Plant Watering Kit based on the Arduino Nano RP2040 Connect board and everything you need to get started to water your indoor plants. Arduino Plant Watering Kit content: Arduino Nano RP2040 Connect board (ABX00053) with Raspberry Pi RP2040 MCU, ESP32 module for WiFi, and Bluetooth LE connectivity. Arduino Nano Screw Terminal Adapter (ASX00037) Open-ended USB cable with on/off switch 5V submersible pump 1-meter of plastic hose Grove moisture sensor Grove relay module with cable Grove LED button module with cable Grove cables 50 cm 10x Jumper wires (15 cm) 12x screw connectors Simply connect the moisture sensor and the water pump (through the relay) to the Nano RP2040 Connect board, insert the moisture sensor in a flower pot, and put the pump in a recipient […]

January 30, 2023February 2, 2023 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

MicroBlocks is a visual programming IDE for 32-bit microcontrollers

MicroBlocks is a visual programming IDE for 32-bit microcontrollers currently supporting the BBC Micro:bit V1/V2, Calliope mini (aka the German Micro:bit), Adafruit Circuit Playground Express and Bluefruit, Raspberry Pi Pico and Pico W, and various other boards including ESP32 and ESP8266-based boards. I discovered MicroBlocks in the list of talks for FOSDEM 2023, and although it did not make it to my virtual schedule, I thought it was interesting to look into and write about it. In their upcoming FOSDEM talk, Bernat Romagosa and Kathy Giori refer to MicroBlocks as small, fast, and human-friendly with development guided by four guiding principles: liveness, parallelism, portability, and autonomy. The IDE is inspired by Scratch, and as such, looks very similar to other visual programming interfaces I have used over the years. You can launch MicroBlocks from Google Chrome or Microsoft Edge on a PC (not a mobile device) without having to install […]

January 24, 2023January 24, 2023 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

HackyPi Raspberry Pi RP2040 USB dongle serves as an educational “hacking” tool (Crowdfunding)

SB Components’ HackyPi is a Raspberry Pi RP2040-based USB dongle whose main purpose is to teach ethical hacking and coding programs, in other words, some sort of portable educational hacking tool. The small USB stick features a 1.14-inch color LCD, a MicroSD card to store data such as scripts and photos, and a button to enable programming like on other Raspberry Pi RP2040 boards. HackyPi specifications: MCU – Raspberry Pi RP2040 dual-core Cortex-M0+ microcontroller @ 133 MHz with 264KB SRAM Storage – QSPI flash, MicroSD card slot Display – 1.14-inch color LCD with 240 x 135 resolution USB – 1x USB 1.1 Type-A port Misc – Boot “Initiate Program” button Power Supply – 5V via USB port Dimensions – 55.04 x 23.20mm SB Components says the HackyPi USB dongle can be programmed with Raspberry Pi Pico C/C++ and MicroPython SDKs as well as CircuitPython, and they will release hardware design […]

December 31, 2022December 31, 2022 by Jean-Luc Aufranc (CNXSoft) - 21 Comments

Year 2022 in review – Top 10 posts and statistics

It’s the last day of the year and the time to look at some of the highlights of 2022, some traffic statistics from CNX Software website, and speculate on what 2023 may bring us. The semiconductors shortage continued in 2022, but things are looking brighter in 2023 with the full reopening of the world mixed with forecasts of difficult economic times that should keep the demand/supply equation in check. On the Arm processor front the biggest news of the year, at least in this corner of the Internet, was the launch of the Rockchip RK3588 octa-core Cortex-A76/A55 processor together with interesting single board computers that we’ll discuss below. Announced last year, the Amlogic A311D2 octa-core Cortex-A73/A53 was finally made available in a few SBC’s, and we finally got some news about the Amlogic S928X Cortex-A76/A55 SoC showcased in 8K TV boxes, but we have yet to see it in action. […]

December 28, 2022December 28, 2022 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Banana Pi BPI-Pico-RP2040 – Raspberry Pi Pico replica gets USB-C port, I2C connector, and RGB LED

Banana Pi BPI-Pico-RP2040 is basically a clone of the original Raspberry Pi Pico, but with the addition of an RGB LED and a 4-pin I2C connector, and the company replaced the micro USB port with a Type-C connector. The rest of the board, also called Banana Pi Pico, is exactly the same up to the through holes and castellated holes for the I/Os, and has a similar form factor as the Banana Pi BPI-PicoW-S3 that adds WiFi and Bluetooth through the ESP32-S3 wireless microcontroller. Banana Pi BPI-Pico-RP2040 specifications: MCU – Raspberry Pi RP2040 dual-core Cortex-M0+ microcontroller @ up to 133 MHz with 264KB SRAM Storage – 2MB QSPI flash USB – 1x USB 1.1 Type-C port used for power and programming Expansion 2x 20-pin 2.54mm pitch header and castellated holes with 26 GPIOs, 3x 12-bit ADC up to 500 Kbps, 2x UART, 2x I2C, 2x SPI, 16x PWM, 2x programmable […]

December 23, 2022December 23, 2022 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

LEGO brick with Raspberry Pi RP2040 runs Doom

James Brown (aka Ancient) has built a tiny computer inside a LEGO brick with a Raspberry Pi RP2040 microcontroller and a 0.42-inch OLED display. And yes, it runs Doom. So finally, the LEGO minifigures have access to a computer suitable for their size :). James did not post a lot of information to reproduce the build by yourself, but he still released the “uGrey” code, written in Micropython, to display greyscale on a monochrome OLED. We can learn from the design in a mesmerizing video (embedded at the end of this post) showing how he made a Raspberry Pi RP2040 computer fit into a LEGO brick. The tiny design is comprised of five main boards/modules: Raspberry Pi RP2040 module The micro USB module Two side modules with other components A 0.42-inch OLED display with 72×40 resolution (SSD1306) Since soldering the four modules together by hand only would be really challenging, […]