J1 is a small (200 lines of Verilog) stack-based CPU, intended for FPGAs. A complete J1 with 16Kbytes of RAM fits easily on a small Xilinx FPGA. Some highlights:
       Extremely high code density. A complete system including the TCP/IP stack fits in under 8K bytes.
       Single cycle call, zero cycle return
       Instruction set maps trivially to Forth
       Cross compiler runs on Windows, Mac and Unix
       Basic software includes a sizeable subset of ANS Forth and a portable TCP/IP networking stack.

Interesting minimal computer using TTL SSI parts. Includes VGA output.

Exploring precision GPS/GNSS with RTKLIB open source software and low-cost u-blox GPS receivers.
This particular post links to the announcement of the u-blox ZED-F9P high precision GNSS module
https://www.u-blox.com/en/product/zed-f9p-module
According to https://forum.u-blox.com/index.php/18878/when-can-i-get-a-zed-f9p
"I contacted u-blox and they said that the evaluation kits will be available at the end of Nov 2018."

The uBlox LEA-6T supports precision GPS timing for demanding positioning applications such as basestations. It features a time mode function whereby the GPS receiver assumes a stationary 3D position, whether programmed manually or determined by an initial self-survey. Stationary operation enables GPS timing with only one visible satellite and eliminates timing errors which otherwise result in positioning errors. An accuracy of up to 15 ns is achievable by using the quantization error information to compensate the granularity of the time pulse. A built-in time mark and counter unit provide precise time measurement of external event inputs

Raspberry π based notebook computer.

This is a Linux industrial I/O (IIO) subsystem driver, targeting RF Transceivers. The industrial I/O subsystem provides a unified framework for drivers for many different types of converters and sensors using a number of different physical interfaces (i2c, spi, etc). See IIO for more information.
Provides details which are useful for programming the ADALM Pluto SDR.

A Hewlett Packard Infrared Signal Decoder
Martin Hepperle
June 2015
Several Hewlett Packard pocket calculators are able to send printer output via Infra-Red (IR) signals to a small portable printer. They use an HP-specific transmission protocol which is also called “Red Eye”. This protocol is different from the better known IrDA protocol. This document gives a brief overview of the format and describes hard- and software to build a decoder system for this protocol.
This system allows receiving the “Red Eye” signals with a computer via a serial or an USB interface.

Software runs on Linux, Android, OS X, iOS and Windows.

Another muon detector, or rather instructions to build one.
See also http://cosmicpi.org/

General discussion group about Aispy and SDR# software. This is not the customer support!

AIRSPY is suite of affordable high performance Software Defined Radio (SDR) receivers for HF/VHF/UHF bands.
http://airspy.com