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Piunora Lite Carrier for Raspberry Pi 4 Module by Diodes Delight
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Piunora by Diode Delights is a compact, easy-to-use development board for electronics prototyping with Linux. It has a familiar form factor, legible pin lab...
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Piunora by Diode Delights is a compact, easy-to-use development board for electronics prototyping with Linux. It has a familiar form factor, legible pin labels, and a design that’s well suited to space-constrained applications.
As a carrier board for the Raspberry Pi Compute Module 4 (CM4), Piunora is essentially a tiny version of the Raspberry Pi 4 Single Board Computer (SBC) with added flexibility to accommodate custom form factors. CM4-based devices like Piunora are fully compatible with software that was written for the Raspberry Pi 4, as long as that software accounts for the hardware peripherals in use. There are also versions of the CM4 that include eMMC memory, which is more reliable than a traditional SD card.
It may be small, but Piunora is packed with powerful peripherals!
Piunora Lite uses the exact same PCB as Piunora Pro but leaves off the bottom side components for space and cost savings.
Piunora Lite does not include the following features:
- PCI-e M.2 B-Key with dedicated 3.3 V / 3 A supply.
- Camera connector
Features & Specifications
- Arduino UNO R3 / Adafruit Metro compatible form factor (3.3 V logic, may not be compatible with all Shields)
- PCI-e through M.2 B-Key connector on the rear of the board with dedicated 3.3 V / 3 A supply
- Analog to Digital Converter (MCP3008)
- On-the-fly switching between USB host (USB Type-A) and device mode (USB Type-C)
- Qwiic/Stemma QT connector to easily interface with I²C devices
- A full-sized camera connector that supports all Pi-compatible cameras
- A full-sized HDMI 2.0 port
- A WS2812 Smart RGB LED for user status
- Optional Wi-Fi or eMMC options depending on your choice of CM4
- Slim design with the Piunora Lite measuring 8-12 mm and the Piunora Pro measuring 11-13 mm
- Two user-controllable buttons (including software that turns one of them into a safe-shutdown button)
- Open hardware. Design files and software are published by the time it ships
Pi 4 Compute Module is not included, but we carry them here.
Jargon buster
Plain-language definitions for the technical terms used above.
- eMMC
- Embedded MultiMediaCard is built-in flash storage soldered onto a board, similar in purpose to an SD card but integrated. It matters because it holds the operating system and files without needing a separate memory card.
- HDMI
- HDMI is a common digital video and audio connection used by computers, media players, and many displays. If a display kit has HDMI input, it is usually much easier to test with a single-board computer because it can act like a normal monitor.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- M.2
- M.2 is a compact edge-connector standard for plugging small modules - such as SSDs, wireless cards or microcontroller modules - into a host board without soldering. The same slot shape can carry different interfaces (for example PCIe, SATA or USB), so keying and the supported module type need to be checked.
- PCB
- A printed circuit board (PCB) is a board, usually rigid, with etched copper tracks that connect electronic components together without loose wiring. Components are mounted on the board and signals route between them through the copper layout.
- Qwiic
- Qwiic is a plug-in connector system for I2C devices that uses small 4-pin cables, so you can connect compatible sensors without soldering. It matters because your controller or adapter also needs Qwiic, or you will need a cable or breakout to wire it up.
- RGB
- Short for red, green and blue, the three primary colours of light that are mixed in varying amounts to make a wide range of colours. In electronics RGB can refer to an LED or pixel that blends these three colours, or to a colour signal or interface that carries separate red, green and blue channels.
- STEMMA QT
- A small plug-in connector system for I2C boards that lets you connect compatible sensors and controllers without soldering. It matters because it can make wiring faster and less error-prone, especially when adding several small modules to a project.
- USB host
- A USB host is the side of a USB connection that controls attached devices, like a computer talking to a keyboard or flash drive. This matters because most microcontroller boards are normally USB devices, so adding USB host support lets them use common USB peripherals.
- USB Type-C
- USB Type-C is a small, reversible USB connector used for power, data and sometimes video on many modern devices. The connector itself does not guarantee a particular speed or voltage, so check the supported USB version, data rate and whether it carries more than 5V via USB Power Delivery.
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