Red pitaya

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STEMLab board version 1.1 with SMA sockets in yellow.

Red Pitaya STEMLab is a network-connected FPGA -based test and measurement board that can replace many measuring devices in electronics laboratories by functioning as an oscilloscope , spectrum analyzer , LCR meter , network analyzer or other test and measurement application. The credit card-sized device works with open source software (according to the manufacturer, Open SW source DAQ platform ) and the operating system is based on Linux .

description

The device is a single-board computer for performing various measurement tasks that can otherwise only be performed with complex and expensive products in an electrotechnical laboratory. The basic structure of the device consists of HF inputs and HF outputs with a symbol rate of 2 × 125 MS / s each at 50 MHz analog bandwidth and 14 bit AD and DA converters . The SoC used contains a dual-core ARM Cortex-A processor with 512 MB DDR3 memory . The standard software from STEMLab comprises an oscilloscope, a spectrum analyzer, a signal generator, an LCR measuring device and a 50 MHz 2 × 2 MIMO PID controller . The device can be reprogrammed to take on further tasks, all IO ports are connected to a common FPGA (Field-Programmable Gate Array) ( Xilinx Zynq 7010). Additional ADCs (250 kS / s) and digital IO ports are available. A microSD card up to 32 GB is used as memory .

The STEMlab is supplied with a number of pre-programmed bit files for the FPGA, the functionality of which can be varied with self-written C programs. The implementation of new real-time functionalities requires independent development of FPGA code in a hardware description language such as Verilog or VHDL . An appropriate programming environment and advanced programming skills are required for this.

Equipment

The device has three USB 2.0 outputs, a WLAN adapter and an Ethernet connection. The operating system used is Linux . Due to the large bandwidth of the ADC and DAC, the STEMLab can be used as a software-defined radio transceiver (SDR) as well as in other high-frequency applications. HAMLAB , a fully equipped SDR - HF - transceiver with an output power of 10 W or 100 W, based on the platform of the STEMLab board , has already appeared on the amateur radio market . Although the software (including HDL source code) for this project is made freely available, the device is not a complete open source hardware project as the device's electrical diagrams are not made openly available.

literature

  • Ibrahim, Dogan (2016). Explore, experiment, program Red Pitaya for test & measurement . London, UK: Elektor International Media BV. ISBN 978-1-907920-53-0
  • Mike Richards (July 2016). Pi Updates and Red Pitaya . Radio user. Bournemouth, UK: PW Publishing Ltd. 11 (7): 17. ISSN  1748-8117
  • Mike Richards (August 2016). Red Pitaya as a VNA (vector network analyzer) . Radio user. Bournemouth, UK: PW Publishing Ltd. 11 (8): 18-21. ISSN  1748-8117

Web links

Individual evidence

  1. ↑ Red Pitaya. Retrieved November 19, 2017 .
  2. ↑ openDAQ. Retrieved November 19, 2017 .
  3. ↑ Red Pitaya: first attempts at walking . In: indiBit . May 8, 2016 ( indibit.de [accessed November 19, 2017]).
  4. ↑ Red Pitaya - freely programmable measuring device . In: reichelt.de magazine . March 8, 2016 ( reichelt.de [accessed November 19, 2017]).