AB Open is an open source and technical communities consultancy that specialises in embedded and wireless systems.

Our clients include semiconductor companies, component distributors, equipment vendors and service providers.


Andrew Back

Andrew Back

Andrew Back is managing director. He has in excess of 20 years industry experience that spans IT infrastructure, telecommunications and electronics, and covering R&D through to architecture, strategy and governance.

Andrew previously acted as BT’s Open Source Strategist, establishing company-wide open source policy and process and representing them at a number of bodies including The Linux Foundation and ATIS.

Stuart Childs

Stuart Childs looks after production. He has a background in open design and researching the benefits of open working practice.

Stuart enjoys designing and building physical projects, has exhibited at every Maker Faire UK event and worked at Arduino specialists, oomlout. He is a supporter of Open Knowledge and has helped in running their annual OKFest and OKCon events in 2012, 2013 and 2014. He does a lot of laser cutting and is enjoying exploring other CNC production methods.

Chelsea Back

Chelsea Back is a trainee engineer. She performs various workshop duties while also studying and working towards a degree in Electronic Engineering.

Chelsea enjoys building microcontroller projects and teaching people how to solder. She is currently getting to grips with schematic capture and PCB layout.

Gareth Halfacree

Gareth Halfacree is a technology journalist and technical author best known for his work on the Raspberry Pi User Guide and an upcoming book covering the BBC’s micro:bit project. A keen open source advocate and RISC-V fan, Gareth is responsible for curating our fortnightly community round-up posts.


Jeremy Ruston

Jeremy has over 30 years experience creating software products, and building the teams to deliver them in startups and the enterprise. He is the founder and leader of TiddlyWiki, a popular open source personal organiser, and was Head of Open Source Innovation at BT after the acquisition of his company Osmosoft.

Joe Halliwell

Joe is an artificial intelligence researcher turned entrepreneur and co-founder of Winterwell Associates, a mathematics and AI consultancy. Joe studied Mathematics and Philosophy at Oxford University, and has a Ph.D. in artificial intelligence from the University of Edinburgh. He’s keen on open source software, short stories and big data.


Beautiful. Functional. Circuits.


Boldport create circuits that are both beautiful and functional using their own open-source printed circuit board design software, PCBmodE. Their breadth of electronics design experience allows them to create unique and innovative products that stand out.





NMI is the trade association representing the Semiconductor, Microelectronics and Electronic Systems communities in the UK and Ireland.


Calderdale and Kirklees Manufacturing Alliance

CKMA are a group of manufacturing companies and businesses working with business support organisations, education, skills councils, local and national government to promote manufacturing.



Registered office: AB Open Limited, Unit C5, Tenterfields Business Park, Halifax, HX2 6EQ.

Registered in England and Wales № 7989969.