IRNAS OPEN HARDWARE INSTITUTE Modular open hardware design for - - PowerPoint PPT Presentation

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IRNAS OPEN HARDWARE INSTITUTE Modular open hardware design for - - PowerPoint PPT Presentation

Jan 03, 2023 135 likes •880 views

IRNAS OPEN HARDWARE INSTITUTE Modular open hardware design for electronics and 3D printing Luka Mustafa Musti musti@irnas.eu @slomusti S56MC IRNAS.EU | @institute_irnas CC BY-SA 4.0 Presentation outline Overview of multiple

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IRNAS.EU | @institute_irnas CC BY-SA 4.0

IRNAS – OPEN HARDWARE INSTITUTE

Modular open hardware design for electronics and 3D printing

Luka Mustafa – Musti musti@irnas.eu @slomusti S56MC

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IRNAS.EU | @institute_irnas CC BY-SA 4.0

Presentation outline

  • Overview of multiple open hardware projects
  • Discussion of design choices
  • Keep an eye out for lessons learned
  • ASK QUESTIONS!
  • Touch all the prototypes, have a good look at

them.

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IRNAS.EU | @institute_irnas CC BY-SA 4.0

WHO AM I?

  • Luka Mustafa - Musti (MEng)
  • electronics, telecoms, hardware hacking, …
  • Institute IRNAS Rače (non-profit development)
  • Shuttleworth Foundation Fellow
  • University College London: PhD student
  • Also active in :
  • HAM radio S59DXX
  • wlan slovenija
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IRNAS.EU | @institute_irnas CC BY-SA 4.0

nodewatcher

Organizations Projects

Non-profit research and development For-profit prototyping and production Affordable manufacuring toolset Open hardware bio lab Network deployment, monitoring and provisioning Wireless optical communication Open source 3D bioprinting

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IRNAS.EU | @institute_irnas CC BY-SA 4.0

KORUZA

Open source open hardware wireless optical communication system.

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IRNAS.EU | @institute_irnas CC BY-SA 4.0

KORUZA

is a wireless optical internet access system, empowering an instant optical network roll-out in high-density urban networks with minimal infrastructure investment and ensures long-term interference-free operation. Data is securely transmitted point-to-point over a collimated beam of light at 1 Gbps or 10 Gbps throughput at distances up to 150m. KORUZA is the first affordable free-space optical system (FSO), enabling next generation last-mile connectivity and versatile installation options. It is low-maintenance and operates an active link protection, overall offering a short return-on-investment (ROI).

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Light-speed networking. No cables, no congestion. Ten times cheaper.

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Radio spectrum congestion. Radio spectrum congestion eliminated with Koruza.

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CREATING AN ULTRAFAST WIRELESS OPTICAL NETWORK INCREASING THE CAPACITY OF COMMUNITY WIRELESS NETWORK

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Use-cases

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Point-to-point bridging

KORUZA is a perfect wireless communication solution to transmit 1Gbps or 10Gbps between buildings, across, the road, river or any other terrain.

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Increasing the capacity of existing networks – WiFi

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Expanding the reach of FTTH

KORUZA expands the reach of existing wired optical infrastructure by extending its reach with minimal installation costs and provides true optical connectivity to the customer.

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IRNAS.EU | @institute_irnas CC BY-SA 4.0

Last-mile mesh network

KORUZA includes routing capabilities to create a mesh network between a number of buildings and enables covering a large number of buildings with fiber capacity in days. Zero interference operation enables delivery of maximum speeds even to most distant customers.

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Evolution

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PROBLEMS

  • complicated assembly
  • expensive lab equipment
  • superglue
  • irrelevant existing research
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3D printing the whole KORUZA system

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Using spring couplers from Troublemaker in KORUZA

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Using sliding bushings from Troublemaker in KORUZA

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Modular design with steel rods & 3D printed components that are standalone KORUZA 1.0

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KORUZA 1.0

  • Fully modular mechanical design.
  • Enables easy modification for a variety
  • f use cases.
  • Improved stability and reliability.
  • 3D printed parts designed in

OpenSCAD environment.

  • Interconnection with stainless steel

rods.

  • Automatic alignment and tracking.
  • Available as a DIY kit.
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IRNAS.EU | @institute_irnas CC BY-SA 4.0

TESTING

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IRNAS.EU | @institute_irnas CC BY-SA 4.0

Fog Scientific Testing

  • Evaluation of the link

performance in low visibility and presence of aerosols in the atmosphere.

  • Experiment design using dry-ice,

fog machine and smoke flare.

  • Outdoor conditions simulated in

a 50m PVC corridor.

  • Green laser visibility

measurement system.

  • Testing facility
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Fog scenarios

Moderate/typical autumn fog ~6dB/100m

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Maribor Test Network

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Pro

2016

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FUTURE PROOF COLLABORATIVE DESIGN TOTAL OWNERSHIP FAIR PRODUCTION

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IRNAS.E | @institute_irnas IRNAS.EU | @institute_irnas CC BY-SA 4.0

WHAT IS GOOD ENOUGH FOR YOU?

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Empower individuals and communities around the world to BUILD, FIX, HACK, MAKE LOCALLY.

Credit: Nepal Communitere

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EFFECTIVELY OPEN Accessible GOOD ENOUGH Affordable MODULAR DESIGN Sustainable

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Suitcase kit of essential parts. Source heavy and big sized components locally. Build it anywhere around the globe!

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  • pen hardware as baseline

manufacturing solution

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Hybrid CNC Plasma Cutter

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Hybrid CNC Mill

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Trolley and z axis

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  • Reliable wiring of DIY machines is often problematic
  • Ground loops
  • Intereference
  • Can be solved with shielded cables, grounding and opto-

couplers

  • Why not use fiber instead?
  • Toslink cable to every stepper
  • Driver on stepper
  • Only fiber and power required

ToslinkCNC – fiber optic cnc machine control system

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Toslink Receiver-transceiver

Using IDC-10 connector Using terminal blocks

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Toslink Transmitter

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Arduino Shield Planet CNC Raspberry Pi Shield

Toslink Transmitter

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Troublemaker 3D printer

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Collaborating with Communitere to enable sustainable disaster recovery in Nepal

Credit: Nepal Communitere

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Credit: Nepal Communitere

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Credit: Nepal Communitere

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Solar powered GoodEnoughCNC

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GOODENOUGHCNC + OPEN DESIGN = BUILD SOLUTIONS LOCALLY

  • Credit. faircap.org
  • Credit. aker.me
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Saving endangered green turtles with open source turtle tags – PitStop Tag

Credit: Alais Dair

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Symbiolab – open and DIY biolaboratory

  • an open space for research, citizen

science and bioart

  • development of "good enough" DIY

laboratory equipment

  • educational workshops and exhibits

Fields of interest:

  • urban farming
  • biomaterials
  • analytical biology
  • sustainable development
  • biomedical engineering
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COLLABORATION WITH SAFECAST Developing Solarcast

Safecast Solarcast sensor device is designed to operate off-grid and sense environmental parameters. It consists of 5 key modules designed for maximal reuse.

Modular design

  • Air sensor module
  • Geiger sensor module
  • Battery power module
  • Communications module
  • Gateway module

KEY DOCUMENTATION: https://github.com/IRNAS/Solarcast

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BATTERY MODULE

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Battery power module – Iot Battery Pack

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COMMUNICATIONS MODULE

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COMMUNICATIONS MODULE

  • Main processor: NRF module nRF52832 ANT
  • GPS module
  • 3G module
  • Accelerometer
  • Connectors for all other module (reusing USB)
  • Expansion connector and lots of unused features
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GEIGER MODULE

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GEIGER MODULE

  • BLE module NRF nRF52832 ANT (optional)
  • Geiger pancake sensor (may be a stack of two)
  • Temperature and humidity sensor (optional)
  • 5V power supply via USB connector (no USB

data)

  • LED activity indicator
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AIR MODULE

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AIR MODULE

  • BLE module NRF nRF52832 ANT (optional)
  • Particle sensor Alphasense OPC-N2 (SPI)
  • Particle sensor PM2.5 PMS 5003 (UART)
  • Temperature and humidity sensor BME280

sensor (I2C SDO high 0x77)

  • 5V power supply via USB connector (no USB

data)

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GATEWAY MODULE

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GATEWAY MODULE

  • LORA module Microchip RN2483/RN2903
  • SMA connectors for 434MHz/868MHz
  • SSD1306 i2c display (optional)
  • 5V power supply and 3V3 regulator
  • Status LED for each RPi and LORA module

(optional)

  • Temperature and humidity sensor (optional)
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IRNAS.EU | @institute_irnas CC BY-SA 4.0

KEY GUIDELINES FOR OPEN HW DESIGN

  • Expect unexpected uses and support them
  • Modularize to simplify
  • Add debug features, connectors and more
  • PCBs are cheap, do not make them smaller
  • Document iterations so others can learn
  • Serial numbers + check lists are your friend
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DEBUGGING FEATURES

  • Add a header with all pins connected to them for easy

access and measuring

  • Add a bypass header for every switch
  • Add more LEDs then needed
  • Unpopulated components on a board are ok
  • Add 0 ohm resistors to every power line, debugging short

circuits is then easy

  • Test modules individually
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IRNAS.E | @institute_irnas IRNAS.EU | @institute_irnas CC BY-SA 4.0

Connect

@institute_irnas irnas.eu

THANK YOU!

CC BY-SA 4.0