HTML and Javascript work together to make an interesting graphical environment. Here are some we use rendering Spark Decodes in various forms.
Preview Releases. page 
Read breaking news in groups. sparksdr hermes-lite
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Hermes-light 2 gateware for 10 receive-only radios. post
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SparkSDR. This .net core app has more options available when launched from the command line.
/Applications/SparkSDR.app/Contents/MacOS/SparkSDR
Error logs reported in this directory.
cd ~/.config/m0nnb/SparkSDR2/errorlogs cat `ls -tr | tail -1`
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Retrieving receiver mode over cat. group
Websocket api with suggestions. github
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Plotly. Charts built on d3 for data science. tutorial
The ESP8266 is a low-cost Wi-Fi microchip with full TCP/IP stack. It is here we first explored Plotly.js with accumulate-sensors.html.
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Frame. Eric Dobbs enhanced wiki with the frameListener that opens pages in the lineup for us. github
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Graphviz. Eric Dobbs has added and maintained the client-side rendering of dot using cross-compiles he found. github
Here is the source at hpcc-systems. github
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Deno. A simple, modern and secure runtime for JavaScript and TypeScript that uses V8 and is built in Rust. install
This is the console.js test script I used when debugging websocket connections. github
deno run --allow-net console.js
We've sought debugging help with our missing pong problems radio folks and from deno developers on discard. post
pages/spark-script-tools