Woo Instant Notifications PRO v2.7 is released

We are happy to announce that version 2.7 of Woo Instant Notifications PRO – a plugin for WordPress / WooCommerce that would allow you to automatically print custom order receipts via Thermal Receipt Printers

New in version 2.7

  • Support for Tyche software Delivery Date
  • Support for Coderockz Delivery Date Time Plugin
  • Fix order metadata from any external plugin for woocommerce  (Allows you to add additional information to the receipt parsed by external woocommerce plugins e.g for delivery date / time etc.)
  • Bugfixes


If you are already a member you can download the latest version of Woo Instant Notifications PRO from the Link below:

You can become a member by visting the link below:

SPDIF HAT for NanoPi Neo

Spdif HAT for NanoPi Neo
Spdif HAT for NanoPi Neo

Last Month, we had the chance to work on several audio projects, based on the tiny NanoPi NEO SBC from FriendlyArm, which features 256/512MB RAM AllWinner H3 Quad core CPU and it is supported in Buldroot and Linux Kernel version 4.14.

For one of the projects that we used to work on , we had to increase the maximum sampling rate of the SPDIF interface of the NanoPi Neo / H3 , to support higher Sampling rates – above 48KHz ( which was the maximum sampling rate in the SPDIF Kernel driver for H3 in Linux Kernel 4.14 ) and to implement AirPlay (via ShairPort-Sync) and DLNA ( via upmpd-cli ) Media Renderer on the NanoPI, using the SPDIF audio interface as audio output, turning the NanoPi NEO into a Hi-Res Network Audio Media Renderer

We have patched the driver to support higher sampling rates of up to 768KHz , 24bits and we have designed a HAT ( NanoHat-SPDIF – Open Source Software and Open Source Hardware addon board for NanoPi NEO / NEO2) in order to prove the concept and to publish the technical solution in our GitHub repository

In addition, we have provided the schematics, buildroot source code and sdcard images for other people to try the solution or if they develop similar Hi-Res Audio Products to ease their work and give them a starting point.

In addition to the above we have provided also an Eagle footprint for NanoPi NEO / NEO 2 hats (in the above GitHub repository) . In case some of you develop a custom addon boards for NanoPi NEO / NEO2 the above should help you and speed up your design.

The NanoPi NEO SPDIF HAT is available for purchase from the links below:

You can read more about the NanoPi NEO / NEO2 Eagle FootPrint, by following the link below:

Stackable Pin Headers and Eagle Library for NanoPi NEO/NEO2

NanoPi NEO / NEO2 Stackable headers with extra spacers

You are developing a custom HAT / Addon board for the NanoPI NEO / NEO2 Series of embedded SBCs?

Hardware Group Ltd offers Stackable Pin Headers with extra spacers, sutable for the NanoPi NEO / NEO2 series of embedded development boards from FriendlyArm. These pin headers will allow you to design Hats for NanoPi NEO / NEO2 for direct panel mount (due to the extra spacers which will lift the HAT above the USB / LAN connectors, thus allowing direct panel mount – > see example)

We found that there are no footprint Eagle Libraries for the NanoPI NEO / NEO2 series of embedded SBCs, which could allow hardware developers to design custom addon boards / HATs for the above SBCs. As a consequence and due to our need to develop a custom addon board for the NanoPI NEO / NEO2, we have designed a open source hardware library ( template for NanoPi NEO HATs) which we believe will help a lot of hardware designers with their projects.

Below is image of the NanoPi-SPDIF – SPDIF for NanoPi NEO / NEO2, developed with the Irdroid’s NanoPi-NEO HAT Template for Eagle


Below is a link to our github repository with a Eagle Library for NanoPi Neo / NEO2 (Template for NanoPi Neo / NEO2 Hats)

Irdroid’s GitHub Repo (Template for NanoPi NEO / NEO2 HATs)

Below you can purchase NanoPi NEO / NEO2 Stackable headers directly from us (EU & US Stock) . Minimum order quantity is 5 sets (needed for 5 NanoPi HATs)

Select a set

We ship worldwide via Registered Airmail for $4.99 with a tracking number included.


We would like to thank all of you, our Clients that support us and also thank to Bulgarian Government for providing help following the situation with COVID-19. We are a beneficiary for a EU Grant in attempt to help companies to mitigate the consequences of the COVID-19 Outbreak.

WooCommerce Automatic Order Printing

In this Blog post we will share our experience with the possibility to print automatically order receipts, packing slips and additional custom order data.

We have several online web shops where we sell different hand crafted products, manufactured by us. With the time we needed a way to improve our order management process with the possibility to print each new order automatically with order details, shipping address and in addition a packing slip. To save time and money we have decided to develop our own plugin to allow us to print this data on a receipt printer as printing each order on A4 paper is a bit expensive in terms of paper , ink etc and definitely not environmental friendly.

We have made a plugin that sends formatted plain text emails specially formatted for print with 58mm Thermal Receipt printers. These emails are triggered based on the order status change (for example when a customer makes new order the status changes from pending to processing and a new email with the order data is sent to the email address configured in the plugin). On the receiving side a Mozilla Thunderbird client with a auto-print addon and filters that will detect a specific keyword and automatically send the email for printing to the thermal printer is used, thus printing each order on a thermal printer paper.

The Plugin is lives at WordPress.org and it can be downloaded for free.

The plugin has several templates for printing order notifications and packing slips. It also has the possibility to make custom order notifications using shortcodes in the plugin’s configuration.

The Plugin is Open Source Software and its code lives @ https://github.com/Irdroid/woo-instant-notifications

Below is a video demo:

A compatible wireless standalone printer (that does not require connection to a computer) can be purchased from

Woo Instant Notifications Pro

What is included in the Pro Version

  • More shortcodes for use with the Plugin Templates
    • Shortocodes for Woo Local Pickup Plus (suitable for restaraunts and coffee shops with more than one physical location. Purchase is made via the merchant online shop and the customer chooses at which location the products will be picked locally)
    • Shortcode for WooCommerce order Shipping address field #2
  • Possibility to print Company logo on every printed receipt
  • Ability to choose wheter to send the receipt to the customer via email as well as to the shop administrator & the receipt printer
  • Guide for printing automatically more than one copy of the receipt to the thermal printer (in some businesses two copies of the receipt is needed – one for the kitchen personnel and one for the delivery / preparation personnel)
  • Guide for using a standard LaserJet printer for automatically printing the receipts on A5 or A6 small paper sizes.
  • Video tutorials for Software Setup
  • Installation Support via phone or email

Woo Instant Notifications User’s Manual

Go Pro -> Woo Instant Notifications Pro

You own a Restaurant, Cafe or Bar affected by COVID-19? Read the article below for offering your clients contact-less (NFC Technology) Digital menu’s

Irdroid irDA Products

Last month we were working on our new irDA product range, that fills the GAP for irDA communication on modern systems. A USB irDA module that works on Windows 7, Windows 8, Windows 10, Android, MAC OS X, Linux. A irDA HAT for Raspberry Pi. A irDA Shield for Arduino and a irDA prototyping board.  You can read more HERE



Roon integration, embedded hardware and software development

Roon Audio integration services

Hardware Group Ltd. offers embedded hardware and software development integration services for  audio products that need support for Roon Audio Streaming. We offer embedded ARM modules and firmware for drop-in integration with your audio products:

– ARM based modules with custom Linux based distributions

– Complete integration and interfacing with client’s Audio Products.

– Integration with communication and audio transport interfaces ( I2C, I2S , UART etc).

– Custom hardware design

– Sample ARM modules, pre-configured with Roon and available for purchase.

Information and samples can be requested via email to sysadmin@hwgroup-bg.com

How we have started

Hardware Group dev board collection

Hardware Group Ltd is a innovative and successful company, bootstrapped following the success of the Irdroid Open Source Hardware / Software project .Irdroid started as a Hobby Project, founded by Georgi Bakalski back in 2011. In 2014 the Hobby project transformed into a Innovative and Successful Company (Hardware Group Ltd.) . During the years we have developed devices, services and software for GNU Linux, MS Windows, Mac OS X, Arduino and more. We believe that learning by sharing is a key for the progress.

Today Irdroid is a registered trademark of Hardware Group Ltd Bulgaria and it provides open source hardware and open source software devices and software development services for Google Android, GNU Linux , Windows and Mac OS X . Our Devices and services help hundreds of individuals, StartUp Companies and Big Companies around the world to bootstrap their new products and ideas, taking advantage of the Open Source benefits.

You can browse our products below:

– https://irdroid.eu

 Our Portfolio:

– https://hwgroup-bg.com

Contact us:

Address: 4, Balkan street, Plovdiv 4000, Bulgaria

Phone: +359 890 325649

email: sysadmin@hwgroup-bg.com

Discover how to use the Irdroid USB IR Transceiver with the Raspberry Pi

There is a very useful Blog post @ the Irdroid Blog, showing how to turn the Raspberry Pi that lays in your drawer into a fully functional infrared remote control, using the Irdroid USB Infrared Transceiver to Blast the Infrared Signals, generated by the Open Source Software – LIRC (Linux Infrared Remote Control). Furthermore, if you are a Raspberry Pi owner you get a 20% off the order total ,by using the coupon code “raspberry” during checkout. Click on the Link below to purchase:


….And a video of the result: