npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

owonb41t

v0.1.2

Published

A web-bluetooth interface for the OWON B41T+ multimeter

Downloads

16

Vulnerabilities

Powered byPowered by Snyk
  • 0High
  • 0Medium
  • 0Low

Links

Git

Maintainers

pbrunotpbrunot

Keywords

webbluetoothBTowonmultimeterB41T+

Readme

Owon B41t

Javascript interface for digital multimeter OWON B41T+ Test it here: https://pbrunot.github.io/owonb41t/multimeter.html (requires a modern browser with Javascript Bluetooth enabled)

image

Owon meters protocol

B41T+ follows B35 protocol, which is described here : https://github.com/DeanCording/owonb35

Basically every BT notification contains 3 int16:

  • one identifying the active measure, the number of decimals, and the units
  • one identifying the measure type (hold/auto/max/min...) * this one is not parsed at the moment *
  • one containing the displays digits with most significant bit used as sign bit

Bluetooth with Javascript

https://googlechrome.github.io/samples/web-bluetooth/index.html

Adapter required for PC

Bluetooth BLE 4.0+ Tested with TP-Link UB400 Check bluetooth first with Chrome browser: chrome://bluetooth-internals