Raspberry Pi Category - Page 28 of 30 - CNX Software

May 25, 2021May 25, 2021 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

PICOmputer connects Raspberry Pi Pico to QWERTY keyboard, display, and optional LoRa module

Peter Misenko (aka Bobricius) has found an interesting use case for the Raspberry Pi Pico board with its PICOmputer, a compact terminal with a QWERTY keyboard, a small IPS display, and even footprint for an RFM95 LoRa module that would allow messaging/texting over LoRaWAN. Note the open-source hardware project is only offered as a kit with either the main board only, or the main board plus a gold or silver front panel, all without components, but fully assembled units are out of stock at this time. So read on, if you’re ready for some soldering and even some rework of the PCB, more on that latter. PICOmputer key features and specifications: Compatible with Raspberry Pi Pico board Storage – MicroSD card slot Display – Three types supported: 1.3-inch ST7789 IPS 240×240 display via 12-pin flex cable 1.54-inch ST7789 IPS 240×240 display via 12-pin flex cable ST7789 IPS 240×240 display via […]

May 21, 2021 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

A compact Raspberry Pi RP2040 WiFi board – Meet $12.95 Wio RP2040 mini

Seeed Studio has launched another Raspberry Pi RP2040 WiFi board with the compact Wio RP2040 mini development board that provides a cheaper and more compact alternative to ESP32 based Pico Wireless carrier board and Arduino Nano RP2040 Connect, albeit at the cost of providing fewer I/O pins, and lacking Bluetooth LE. Wio RP2040 mini dev board specifications: MCU – Raspberry Pi RP2040 dual-core Cortex M0+ microcontroller up to 133 MHz with 264 kB of embedded SRAM Storage – 2MB QSPI Flash Memory WiFi – 2.4 GHz 802.11b/g/n WiFi 4 supporting AP & station modes USB – USB 1.1 Type-C host/device port for programming Expansion – 2x 14-pin headers with 20x multifunctional GPIO pins supporting PIO and PWM, 2x UART, 4x ADC, 2x SPI, 2x I2C. Misc – Boot & Reset(RUN) buttons, Power and user (GP13) LEDs Power Supply 5V via USB-C port(default) 3.6-5V via Vin header pin Dimensions – 45.5 […]

May 17, 2021May 17, 2021 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

Arduino Nano RP2040 Connect WiFi & Bluetooth board launched for $25.50

Arduino Nano RP2040 Connect without headers

The Arduino Nano RP2040 Connect board was announced the day of Raspberry Pi Pico launch as one of the third-party boards featuring Raspberry Pi RP2040 dual-core Cortex-M0+ microcontroller. At the time all we had was renders of the board, later on, the company showcased some mass product photos, and then released Arduino Core mbed 2.0 for the board last month. But it’s only today that it has become possible to purchase Arduino Nano RP2040 Connect board for $25.50 on Arduino store with headers. Nano RP2040 Connect specifications: MCU – Raspberry Pi RP2040 dual-core Cortex M0+ microcontroller @ 133 MHz with 264 kB of embedded SRAM Storage – 16MB Flash IC (AT25SF128A) Connectivity – WiFi 4 & Bluetooth LE via Nina W102 uBlox module (Yes, that’s an ESP32 module.) USB – Micro USB port I/Os via 2x 15-pin headers (through and castellated holes) 20x digital I/O pins, 20x PWM pins, 20x […]

April 26, 2021April 26, 2021 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

Quad GPIO Expander for Raspberry Pi Pico adds battery, display module, sensors, etc…

Raspberry Pi Pico with OLED display, 18650 battery

People are normally using MCU boards for their low cost, low-power consumption, low price and/or real-time ability. The Raspberry Pi Pico is no exception, but if you don’t care about using a large board, Waveshare created a 177 x 62 mm “expander” board for the Raspberry Pi Pico that can take four modules. The company’s Quad GPIO Expander board includes a set of female headers for RPi Pico, and four sets of 2×20 male headers for extra modules that bring support for 14500 batteries, OLED displays, RTC, relays, and other compatible modules. The expansion board also has a Micro USB port for power, and to leave the Micro USB OTG port on the Raspberry Pi Pico for other purposes. Each header pin is clearly labeled, which could be useful if using some of the pins with jumper wires instead of modules. Waveshare has hundreds of different modules and somehow decided […]

April 15, 2021August 22, 2022 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

The Tiniest Raspberry Pi RP2040 Boards – Tiny 2040 & Adafruit QT Py RP2040

The Raspberry Pi Pico officially board for RP2040 MCU has a lot of free space on the PCB. So when third parties made their own board they either added features like camera, display, and sensors as found on like on Arducam Pico4ML board, while others “cut the fat” to the minimum. Some of the tiniest Raspberry Pi RP2040 boards are Pimoroni Tiny 2040 & Adafruit QT Py RP2040, both of which come with the dual-core Cortex-M0+ MCU, a USB-C port, two buttons, some I/O ports, and not much else. Tiny 2040 Pimoroni Tiny 2040 specifications: MCU – Raspberry Pi RP2040 dual-core Cortex-M0+ microcontroller@ up to 133Mhz with 264kB of SRAM Storage – 8MB QSPI flash USB – USB Type-C port for power, data, and programming I/Os – 2x 8-pin castellated and through holes for 12 I/Os pins including 4x analog inputs, SPI, I2C, UART, 5V, 3.3V, and GND Debugging – […]

April 13, 2021April 13, 2021 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Arducam Pico4ML Board – TinyML on Raspberry Pi RP2040 with QVGA Camera & Display

A few months ago, ArduCAM demonstrated person detection on Raspberry Pi Pico with Arducam camera using TensorFlow Lite, and later we noted more work was being performed to bring machine learning to RP2040 platforms, notably with the development of Arducam Pico4ML board with a built-in camera and display. At the time, i..e last month, all we had were some renders of the board, but now Arducam Pico4ML pre-orders have launched for $49.99 on UCTRONICS and Tindie stores. Shipping is scheduled to start at the end of the month, so let’s have a closer look. Arducam Pico4ML TinyML devkit specifications: Microcontroller – Raspberry Pi RP2040 dual-core Cortex-M0+ MCU with 264 KB of embedded SRAM Storage – 2MB SPI flash Display – 0.96-inch LCD SPI Display (ST7735) with 160 x 80 resolution Camera – HiMax HM01B0 QVGA camera (320×240 @ 60fps) Audio – Built-in microphone Sensor – IDK ICM-20948 9-axis IMU (gyroscope, […]

April 12, 2021 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

Arduino Core mbed 2.0 supports Raspberry Pi Pico & Arduino Nano RP2040 Connect

Last week, we noted and tried the unofficial Raspberry Pi Pico Arduino Core that works on RP2040 boards, including Raspberry Pi Pico. Everything was super early to set up and the blink sample worked just fine. But Arduino recently tweeted about the Arduino Core mbed 2.0 release that adds for Raspberry Pi RP2040 boards including Arduino Nano RP2040 Connect and Raspberry Pi Pico boards. Arduino first used mbed for their Arduino Nano 33 BLE board as they didn’t have an official Arduino core for the Nordic nRF52840 Cortex-M4 microcontroller, and it appears they’ve done the same for Raspberry Pi RP2040 whose mbed implementation itself relies on the C SDK. Let’s have a try, how hard can it be? We can find the release and changelog on Github with some instructions on the main Github. First, we can clone the repo in the sketchbook directory (See Arduino IDE’s preferences) which in […]

April 10, 2021March 23, 2023 by Jean-Luc Aufranc (CNXSoft) - 15 Comments

Olimex RP2040-PICO-PC “computer” to feature RP2040-Py Raspberry Pi Pico compatible module

We previously wrote it was possible to create a Raspberry Pi RP2040 board with HDMI using DVI and programmable IOs to output video up to 640×480 at 60 Hz with the microcontroller’s Cortex-M0+ cores clocked at 252 MHz. At the time, we also noted Olimex was working on such a board with RP2040-PICO-PC designed to create a small Raspberry Pi RP2040 computer with HDMI/DVI video output. The Bulgarian company has now manufactured the first prototype, but due to supply issues with the Raspberry Pi Pico board, they also designed their own RP2040-PICO module since they’ve got a reel of Raspberry Pi RP2040 microcontrollers. RP2040-PICO-PC small computer board Specifications: Support for Raspberry Pi Pico board Storage – MicroSD card Video Output – HDMI port with DVI signal (note no audio through this interface) Audio output – 3.5mm audio jack Expansion UEXT connector with UART, SPI, I2C, 3.3V, and GND to attach […]