Irdroid USB irDA – The irDa device that supports all Operating Systems

Its 2023 and the irDA technology is already ancient and obsolete, but still used in many applications and fields including Medical , Military, Diving Oceanography and more.

The problem is that because the technology is old and obsolete, there is not much support from the Operating Systems for the most of the old devices still available (Old Stock). In addition to that the companies that were producing these irDA devices are no longer interested to continue manufacturing and maintaining product stocks, due to the small market.

The USB irDA transceiver fills that gap, providing irDA connectivity for modern operating systems. It is supported in Linux , MAC OS X and Windows 10 and 11.

In addition to that it is currently in production and available for purchase online from the Irdroid online stores – and

Open Source ECDSA Crypto Authentication USB Dongle

The Irdroid’s ECDSA/ECDH authKi

Irdroid authKi is a Open Source crypto Authentication USB Dongle, with built-in hardware support for Asymmetric Sign, Verify, Key Agreement for ECDSA – Elliptic curve digital signature algorithm, ECDH – Elliptic Curve Diffie-Hellman and NIST Standard P256 Elliptic Curve Support, thanks to the built-in Cryptographic Co-Processor with Secure Hardware-Based Key Storage – ATECC608B by Microchip.

While experimenting with hardware Crypto elements for a Company/Project that I am working, I needed a way to easily access the crypto element via USB, so I designed and built the authKi, and I think that it will be useful for others working in the field There is no open source software and hardware solution that provides the ability to experiment with hardware based secure elements / crypto accelerators. Consequently I found it useful and easy to use for SSH ECDSA public/private keypair authentication and authentication with Git / Github

Learn more about the project by visting its website – >

USB irDA adapters for modern operating systems

The irDA protocol though ancient is still used for some applications such as Medical, in the Energy Sector – for power meter communications and also military applications.

The challenge is not that there are not USB irDA adapters available. It is rather the lack of software support for newer modern operating systems.

This gap is filled by a company called Hardware Group Ltd, which offers a inexpensive USB irDA adapter module, compatible and usable on modern operating systems . It is currently compatible with Linux, Mac OS X and Windows 7, Windows 8 and Windows 10.

The unit is a possible replacement for the following USB irDA adapters that are used for Medical Applications:

  • ZOLL AED plus IrDA adapter
  • Actisys ACT-IR2002UL
  • ACT-IR220L+
  • IR750: USB to IrDA adapter

More information about the module capabilities can be found by visiting this link:

Meet Cloudy – Android based Thermal Receipt Printing System for WordPress

Cloudy is Android based thermal receipt printing system, designed for Print Instant Notifications Plugin for WooCommerce. It features Automatic WooCommerce order printing, wireless (WiFi) and 3G/4G cellular network connection to the Internet Router, easy installation and minimal configuration.Cloudy automatically checks for new orders placed via your WordPress / WooCommerce online store, if a new order is received, the order details will be automatically sent to Cloudy and printed on a receipt for further processing. The Thermal Printing System, together with the Print Instant Notifications Plugin is very useful for order management and processing in restaurants, bars and cafes. The online order gets printed automatically, allowing the personnel to process it immediately and prepare it for the customer for delivery or local pickup. In terms of configuration, Cloudy just need to be connected to the internet via WiFi, then its ready for printing, thanks to the built-in unique Cloud based email address that comes with each device.

The printing system will be available for purchase by the end of March 2022 via Hardware Group Ltd. online store

Ji4ka Prepaid Access Cards

We know that not all co-workers want to spent 100% of their working days at the Office / Coworking space or you are just visiting Plovdiv and you need a Coworking Desk.We are now providing prepaid access at Ji4ka Coworking.

Ji4ka Prepaid will:

  • Give you the flexibility to access the office whenever you need.
  • Give you personal prepaid access card for 24/7 access
  • Save you money, as you don’t need to pay each month!

Ji4ka Prepaid packages:

Ji4ka installs new LoRaWAN Gateway in Plovdiv

Ji4ka Coworking & MakerSpace support The Things Network community in Plovdiv with a new LoRaWAN Gateway, installed in Plovdiv’s city center. The Gateway is installed @ Ji4ka Coworking space near the old town. The Gateway is equipped with 9dBi gain external antenna, mounted on a pole 3.5 meters above the ground.

At the site we have client nodes based on Arduino and raspberry pi, available for Ji4ka’s members and for everyone that want to experiment and learn about LoRA and IoT.