Software-defined radio (SDR) has transformed how we interact with radio signals, and SDRBerry aims to push this transformation further. SDRBerry is an ongoing project designed to integrate an SDR transceiver with a Raspberry Pi, leveraging the power of LVGL v8 for a modern GUI experience. While still in development, this project offers a unique learning opportunity in C++ programming, Liquid DSP, and GUI design.

Project Overview

SDRBerry is built with the goal of supporting various SDR devices, including:

• Adalm Pluto SDR
• Radioberry
• RTL-SDR
• SDRPlay
• Other SDR receivers via SoapySDR

The system also aims to integrate optical encoders, I2C/serial-controlled bandpass filters, and an ESP32-based CAT controller for additional hardware control.

Installation Guide

To install SDRBerry, follow these steps:

1. Set up Raspberry Pi OS (64-bit Bullseye) in CLI mode.
2. Use Raspberry Pi Imager to create a bootable SD card or USB stick (USB storage is preferred for longevity).
3. Configure Wi-Fi and enable I2C using raspi-config.
4. Compile the software using VisualGDB, CMake, GCC, and GFortran.
5. Enable remote control with framebuffer VNC using framebuffer-vncserver.

A full installation guide is available in install_guide.txt, and an installation script (install.sh) automates the process.

Hardware Requirements

• Raspberry Pi 4 Model B
• 5-inch or 7-inch 800×480 touchscreen (DSI connector recommended)
• USB storage device (e.g., Samsung Fit Plus 32GB or larger)
• Generic USB audio adapter

Features and Development Progress

Completed Features:

Adalm Pluto, RTL-SDR, SDRPlay, Radioberry, and HackRF support
FM broadband and narrowband reception
SSB transmission and reception
USB CAT interface support (e.g., ESP32 as a CAT controller)
I2C filter support with PCF8574
Noise reduction (ported from DD4WH’s implementation)
Morse code decoder
FT8 transmission and reception
Web-based remote control via Vue.js 3 and PrimeVue UI (experimental)

Upcoming Features:

• MIDI controller support
• Direct optical encoder support via GPIO
• Network and Wi-Fi setup screen
• Additional noise reduction algorithms (e.g., LMS filtering)
• Codec2 implementation for FreeDV digital voice

Installation of Dependencies

SDRBerry relies on several open-source libraries, including:

• Liquid-DSP (Joseph D. Gaeddert)
• Alsa Audio
• SoapySDR and SoapyPlutoSDR
• FFTW (Fast Fourier Transform)
• CivetWeb (embedded web server)
• nlohmann-json (JSON library for C++)

To install and compile the software, use:

wget https://raw.githubusercontent.com/paulh002/sdrberry/master/install/install.sh
chmod +x install.sh
./install.sh HFB DSI

For Raspberry Pi Touch 2 with Radioberry:

./install.sh RDB T2

Running SDRBerry

To start SDRBerry in user mode or root mode (depending on the SDR device used):

sudo sdrberry > sdrberry.log 2>&1

Mouse support is included, with optimized responsiveness via usbhid.mousepoll=2 in cmdline.txt.

Web-Based Control

SDRBerry introduces an experimental web-based remote control on port 8081. The interface, built using Vue.js 3 and PrimeVue UI, allows users to control SDRBerry remotely. The source code will be available in a separate repository.

To access the web interface:

http://raspberry_pi_ip:8081

Conclusion

SDRBerry is an exciting open-source SDR project that integrates Raspberry Pi, LVGL GUI, and SDR technologies. While still in active development, the project offers a strong foundation for experimenting with software-defined radio on a compact and affordable platform.

For more details and the latest updates, visit the SDRBerry GitHub repository:
https://github.com/paulh002/sdrberry

The post Exploring SDRBerry: A Raspberry Pi-Based SDR Transceiver with LVGL GUI appeared on Hamradio.my - Amateur Radio, Tech Insights and Product Reviews by 9M2PJU.

The world of off-grid communication just got a stylish and functional upgrade. The SenseCAP Indicator for Meshtastic & LoRa is a sleek 4-inch capacitive touchscreen device designed specifically for low-power, decentralized communication. With dual microcontrollers, built-in wireless support, and open-source flexibility, this is more than just a screen — it’s a fully capable IoT companion built for the modern maker.

Built for Meshtastic® and Beyond

Meshtastic® users will feel right at home with the SenseCAP Indicator. Thanks to onboard LoRa® support via the Semtech SX1262 module, this device can seamlessly act as a visual interface for your mesh network. Whether you’re sending messages off-grid, monitoring environmental data, or managing nodes, this device makes interaction intuitive and portable.

Dual MCU Design

Under the hood, the Indicator is powered by two powerful chips:

• ESP32-S3 – A dual-core LX7 microcontroller with 2.4GHz Wi-Fi and Bluetooth 5.0, perfect for cloud connectivity, local dashboards, or Matter integration.
• RP2040 – Raspberry Pi’s beloved microcontroller, providing additional I/O and real-time handling capabilities.

This dual-MCU design ensures efficient multitasking and smart division of labor between communications and control.

Stunning Display

• 4” RGB capacitive touch panel
• 480×480 resolution
• Crystal-clear and responsive UI experience

Whether you’re navigating menus, displaying sensor readouts, or showing message threads, the high-res screen brings clarity to your fingertips.

Connectivity & Expansion

• Wi-Fi (2.4GHz)
• Bluetooth 5.0 Low Energy
• LoRa® (868/915MHz)
• USB Type-C for power and data
• Grove port for expansion with hundreds of Seeed modules

It’s a plug-and-play platform ready for rapid prototyping or full deployment.

What’s in the Box

• 1x SenseCAP Indicator for Meshtastic® & LoRa®
• 1x USB Type-C Cable (1m)

Optionally, you can bundle it with compatible Grove modules like the Grove GPS (Air530) for precise location tracking or long-distance communication enhancements.

Use Cases

• Meshtastic® message viewer and controller
• Off-grid messaging terminal
• Portable sensor data dashboard
• Digital assistant for environmental monitoring
• Custom LoRa® communication interface
• Smart control panel for Home Assistant and Matter devices

Open Source & Developer Friendly

With full support for the Arduino and CircuitPython ecosystems, open-source firmware, and transparent documentation, developers are free to shape the device however they want. Whether you’re building from scratch or adapting existing projects, the platform is as flexible as your imagination.

Pricing & Availability

• Retail Price: $60.90
• Discounted Price: $47.90 (Save 21%)
• Warehouse: Ships from China
• Availability: In stock now

Buy now via Seeed Studio or add it to your cart while the offer lasts!

Final Thoughts

The SenseCAP Indicator for Meshtastic & LoRa is a well-rounded device that blends powerful hardware with open-source accessibility — ideal for hobbyists, tinkerers, and professionals alike. Whether you’re a mesh network explorer, LoRa® enthusiast, or someone seeking a capable touchscreen platform, this tool brings performance, portability, and purpose to your projects.

The post SenseCAP Indicator – A Smart Touchscreen Built for Meshtastic appeared on Hamradio.my - Amateur Radio, Tech Insights and Product Reviews by 9M2PJU.