oshug-announce May 2016

oshug-announce@oshug.org

1 participants
2 discussions

OSHUG #50 — Drones Pt. 2 (Captain Buzz, Whirly Blades of Death, Bounder), Thursday 16th June.
by Andrew Back 22 May '16

22 May '16

Hello, Registration is now open for the June meeting, details of which can be found below. Note that there are no meetings in July or August, and we return after summer with OSHCamp over the weekend of 3rd & 4th September. Cheers, Andrew // Event #50 — Drones Pt. 2 (Captain Buzz, Whirly Blades of Death, Bounder) On the 16 June 2016, 18:00 - 20:00 at BCS London, 1st Floor, The Davidson Building, 5 Southampton Street, London, WC2E 7HA. Registration: http://oshug.org/event/50 For the fiftieth OSHUG meeting we return to the theme of twentieth meeting back in June 2012, "drones", with a talk on Captain Buzz, a smartphone app that flies drones, another on what goes into making a quadrotor stay in the air, and a third talk on managing drone airspace. — Captain Buzz: Your smartphone’s real ‘airplane mode' In ten years time drones will be delivering Amazon packages to your door minutes after ordering them. Current drones are built using purpose-designed hardware and software with limited computational power. Moreover, adding features typically requires purchasing and connecting additional hardware modules. In this talk I present Captain Buzz: a smartphone app that flies a drone, eliminating the need for such dedicated hardware. I show that by mounting your smartphone on a drone, Captain Buzz can use the inbuilt sensors to calculate the drone's position and orientation. Captain Buzz then uses the headphone socket, connected to the drone's servos, to manoeuvre the drone in the air. By building drones using smartphones, we can leverage existing smartphone functionality: Internet connectivity, maps, cameras for novel uses of drones. With Captain Buzz your next smartphone might be delivered to you by your previous one! * Oliver Chick recently finished a PhD in Computer Science at the University of Cambridge Computer Laboratory. His research concerns techniques for measuring the performance of software stacks executing in a virtual machine. Highlights of this work include a best paper at ApSys 2015 and publication in SIGOPS Operating Systems Review (OSR). Alongside this research, Oliver worked with colleagues on a “20%” project to build Captain Buzz, the subject of tonight’s talk. Since completing his PhD, Oliver has started working as a Teaching Associate at Queens’ College Cambridge, and Focal Point Positioning, a startup that is revolutionising positioning in difficult environments. — Whirly blades of death Since the availability of cheap MEMS sensor technology and powerful brushless motors, radio controlled flight has changed enormously. Quadrotors have been viable for several years now and have enjoyed an enormous rush of popularity due largely to their mechanical simplicity. That mechanical simplicity comes at the cost of considerable complexity in the control system. We will take a look at what goes into making a lump of metal with four whirly blades of death stay in the air. * Gavan Fantom is a professional embedded software engineer with a penchant for wielding screwdrivers and soldering irons. He has a keen interest in things that fly, things that make sound and things that make and receive light (ranging from the visible spectrum down to a few MHz). Some people are terrified of his oversized metal quadrotor, noting the fact that it looks menacing as well as expressing fear that he wrote the control software that keeps it flying. For some reason they seem to think it might decide that their face needs the spiral cucumber treatment, never realising that he feeds it pizza before letting it out in public to prevent this from happening. — Managing drone airspace Drones flying into controlled airspace have gotten attention in the media including the recent incident of drone in Heathrow. Ensuring that drones fly within an allowed zone and looking at the possiblity of managing the airspace with a platform to do this, is an interesting challenge. A quick survery of the area with a focus more the software stack of one of them, which was prototype build behind Bounder. High level overview of the choices and tradeoffs and hardware choices associated are discussed. * Anish Mohammed has been an electronics enthusiast and software hacker since his early teens. He endured medical school, before working in security and cryptography. He has spent half his career researching cryptographic algorithms and protocols at three different research groups, including Microsoft Research. He is also a self-confessed UAV addict who owns more than a dozen AHRS/Autopilots. His interests are mostly focused on navigation algorithms for unmanned vehicles. His research interests include AI and Ethics of AI, and he is one of the folks behind Bounder and Dexethics .These days he works for Lloyds, where he is involved with, among other things, internal innovation and Blockchain initiatives. Note: Please aim to arrive by 18:15 as the event will start at 18:30 prompt.

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OSHUG #49 — Open Source Chips Pt. 3 (AAP, FOSSi Foundation, Getting into FPGAs), Thursday 19th May.
by Andrew Back 04 May '16

04 May '16

Hello, Registration is now open for the May meeting, details of which can be found below. A reminder also that in addition to the monthly meeting, we're hosting a one day conference in partnership with NMI and BCS in just under one week, on 10th May: http://oshug.org/event/nmiopen Regards, Andrew // Event #49 — Open Source Chips Pt. 3 On the 19 May 2016, 18:00 - 20:00 at BCS London, 1st Floor, The Davidson Building, 5 Southampton Street, London, WC2E 7HA. Registration: http://oshug.org/event/49 At the forty-ninth meeting we will return to the topic of open source chip design, with talks on AAP — an open hardware processor architecture — and its simulation, the Free and Open Source Silicon Foundation (FOSSi), and getting into FPGAs. — AAP: An Altruistic Processor An Altruistic Processor (AAP) is an open hardware 16-bit architecture for deeply embedded applications running on small FPGA devices. It is somewhat configurable, with a minimum of 4 16-bit general registers, at least one word-addressed code space of up to 16Mword and at least one byte addressed data space of up to 64kbyte. The primary role of AAP is as a test bench for compiler backends. It encapsulates features found in a wide range of popular embedded processors which traditionally cause difficulties for compiler writers. In this talk we will discuss the motivation behind this project, our experience implementing and testing LLVM for this architecture, the architectural features unique to our processor and how these interact with LLVM. In AAP integers are less than 32-bits, pointers may be word addressed, and too large to fit in a registers (of which there may be very few), and have multiple function and code spaces that may be switched between at run time, each with their own addressing requirements. Edward Jones Edward Jones supports Embecosm's work on runtime libraries, LLVM toolchains and testing. Currently his work involves developing LLVM compiler support for embedded systems, as well as work on the TSERO project to develop tools which intelligently optimise compiled code. Other research topics include superoptimization, the art of finding the provably optimal instruction sequence for a given task. — AAPSim: Simulating Hardware in LLVM An Altruistic Processor (AAP) is an open hardware 16-bit architecture for deeply embedded applications running on small FPGA devices. It is somewhat configurable, with a minimum of 4 16-bit general registers, at least one word-addressed code space of up to 16Mword and at least one byte addressed data space of up to 64kbyte. A key part of any implementation of an embedded toolchain is a simulator of the architecture, both such that user written code can be run and so the compiler's implementation itself can be verified. As part of AAP, we have implemented a simulator based on LLVM MC that both runs standalone and as part of a gdb/lldbserver. This talk explores the design and experiences of using LLVM as the host for a simulator. Simon Cook has a background in low-power processors, with a particular focus on the energy constraints of code running in embedded environments. Since 2012, he has been working on LLVM for deeply embedded architectures, primarily focusing on optimization, but also on providing compiler support for unique hardware features. Most recently, he has been working on LLVM for AAP, a reference Harvard architecture with the aim of improving upstream support for more eccentric architectural features. — Open Source Silicon Design Ecosystem The talk will begin by surveying the current state of the open source chip design space and present some of the most exciting and interesting projects and communities which are contributing to the field. Next, the Free and Open Source Silicon Foundation (FOSSi) will be introduced as a group to help further the cause through LibreCores, amongst other initiatives. Julius Baxter has been involved in the OpenRISC project since 2008. Now working as a digital design engineer in Cambridge, he helps run the annual OpenRISC conference, ORCONF, which has since become a general open source digital design conference, and is one of the founders of FOSSi. — Getting into FPGAs; Why, what, how & where might this lead Why? Probably the biggest question I get with programmable logic and gate arrays is: why would I need to use an FPGA, when I can do so much with commonly available micro-controllers? In other words when doesn't a low cost Von Neumann chip do the job efficiently. What? A lightning tour of low cost FPGAs and their capabilities, classic applications and use cases that don't involve spending $millions on fabricating silicon chips. How? The field of FPGAs and chip design can appear big and scary at first. It can present a challenging environment to any newcomer and requires acquisition of multiple new disciplines and commercial tools. As a result many are put of by the steep learning curve and investment of proprietary tools and hardware. Icestorm is Clifford Wolf's an opensource project which combines tools like Yosys to provide a simple and open tool set supporting multiple vendors of FPGAs. Although it is at an early stage and only a small range of products are supported its a great tool to get started with on small projects and enables you to get close to the mechanicals. In addition to it's Verilog support, it also exposes some nice low level features that will result in more innovative and diverse open tools flourishing around it further down the road. Where? A glimpse at the part FPGAs might play in the emerging embedded intelligence market: Matrixed Open Turing Engines (Motes) enabling low powered smart controllers for robotics, devices and IoT. This illustrates at least one fascinating trajectory for FPGAS & ASICs in the opensource hardware community. Alan Wood has been working with parallel distributed programming for several decades. His recent work includes smart grids, 3D printers, robotics, automation and biotec diagnostics. His current research is focused on machine learning for embedded applications using Motes on FPGA and emerging Asics. He is a long term advocate and moderator (aka Folknology) for xCORE and other opensource communities, as well as a founder of Surrey and Hampshire Makerspace. Note: Please aim to arrive by 18:15 as the event will start at 18:30 prompt.

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oshug-announce May 2016