Raspberry Pi Category - Page 16 of 27 - CNX Software

February 21, 2023February 21, 2023 by Jean-Luc Aufranc (CNXSoft) - No Comments

Badger 2040 W e-Paper display gets WiFi & Bluetooth with Raspberry Pi Pico W

Pimoroni Badger 2040 W wireless programmable e-Paper badge comes with a 2.9-inch black & white E-Ink display and a Raspberry Pi Pico W board for WiFi (and Bluetooth) connectivity. It is an update to the Pimoroni Badger 2040 with the exact same display, but instead of using a Raspberry Pi RP2040 microcontroller, Pimoroni fitted a Raspberry Pi Pico W on the back of the board, probably to avoid going through FCC and CE certifications. Badger 2040 W specifications: MCU board – Raspberry Pi Pico W board with: Raspberry Pi RP2040 dual-core Arm Cortex M0+ running at up to 133Mhz with 264kB of SRAM Storage – 2MB QSPI flash Wireless – 802.11b/g/n WiFi 4 and Bluetooth Classic+LE with ABRACON onboard antenna (Infineon CYW43439 connected over SPI) Display – 2.9-inch B&W E-Ink display with 296 x 128 pixels resolution, ultrawide viewing angles, ultra-low power consumption; Dot pitch – 0.227 x 0.226 mm […]

February 21, 2023February 21, 2023 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

Raspberry Pi Debug Probe eases bare metal development for $12

The Raspberry Pi Debug Probe is a USB serial adapter based on the Raspberry Pi RP2040 microcontroller and designed to debug the Raspberry Pi Pico, third-party RP2040 boards, and pretty much any Arm board through SWD and/or UART interfaces. The main advantage over a typical USB-to-serial adapter is the presence of a Serial Wire Debug (SWD) bridge used for bare metal code development and debugging through tools such as OpenOCD. The Raspberry Pi Debug Probe specifications: MCU – Raspberry Pi RP2040 dual-core Cortex-M0+ microcontroller @ 133 MHz with 264KB SRAM Storage – 2MB SPI flash (W25Q16JVUXIQ) Debug interfaces 3.3V Serial Wire Debug (SWD) 3-pin JST connector conforming to the Raspberry Pi Debug Connector Specification and compatible with the CMSIS-DAP standard 3.3V serial (UART) 3-pin JST connector USB – Micro USB port to connect to the host Misc BOOTSEL button for flashing firmware to the debug board Unpopulated 3-pin header with […]

February 17, 2023 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

Ploopy – 3D printed open-source hardware headphones feature Raspberry Pi RP2040 MCU, TI PCM3060 24-bit DAC

I don’t think I’ve ever written about open-source hardware headphones. But that’s precisely what Ploopy offers with an amplifier based on a Raspberry Pi RP2040, a Texas Instruments PCM3060 24-bit DAC, and an amplifier circuit, as well as 3D printed parts and open-source firmware written in C. As we’ll see further below the project is reasonably well documented, and you can either build it from scratch, purchase a fully-assembled kit, or something in the middle. I suppose you could even do some knitting since woven covers are part of the build just in case making your own PCBs and 3D printing parts are not your things. The electronics are comprised of two boards: The Gould amplifier board with the Raspberry Pi RP2040, Texas Instruments PCM3060 24-bit 96/192 kHz DAC, and several TI OPA1688 audio operational amplifiers The Mazzoleni driver flex boards going into the left and right rings with a […]

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 […]