Skip to end of metadata
Go to start of metadata

You are viewing an old version of this page. View the current version.

Compare with Current View Page History

« Previous Version 6 Current »

Attending

Action Items

Minutes

  • Tengfei Chang

    • gives an update on the software workflow

  • Thomas Watteyne

    • upload your pic to your profile

    • getting page contents programmatically

  • Lydia Lee

    • getting rid of ASC magic number

    • discussion about #define vs enum vs variables

  • Jove Yuan

    • optical programmer upgrade

    • random spikes on the programmer

    • mote isn’t receiving everything, something isn’t been received, debugging

    • performance depends on the chip, may be because reflections in the package

    • Kristofer PISTER : right path forward? can we get a visible light LED with a broad enough spectrum and that is fast enough (1MHz?)

    • Kristofer PISTER : good ideas, send to Jove

    • Kristofer PISTER : try out the different angles

    • Kristofer PISTER : do we have a circuit explanation why we can program, but not calibrate?

    • limitation of the analog discovery to capture the SFD (??)

    • Jove to talk to Kris

  • Titan Yuan

    • SCuM to OpenMote calibration

      • looking at OpenMote serial port ()

        • length

        • coarse

        • mid

        • fine (0..31)

        • RSSI

      • many lost packets, valid RSSI

      • is SCuM sending the wrong packet contents with the right CRC?

      • Kristofer PISTER : make sure to explain detail

      • 01bsp_radiop_rx is what is running on OpenMote

      • Scum sends million packets to OpenMote only couple of packets is received

      • Kristofer PISTER : please check whether you are checking CRC

    • BLE:

      • couldn’t get BLE to work on Q4

  • Raymond?

    • BLE transmitting

    • looking at beacon apps. Formats: Apple has iBeacon, Android has Eddystone which includes telemetry data. THere are Android/iPhone apps that display this.

    • Kristofer PISTER : please do a presentation on apps which do things with BLE beacons; find what to do on SCuM to send data to those apps

    • let’s demonstrate the world’s smallest compatible beacon

  • Felipe Campos

    • SCuM with interrupts, not using Brad’s polling code, instead use capture registers (see Sahar's code)

    • will lowering timing errors (lighthouse, etc)

    • lots of problems from UART

  • Ahad Rauf

    • SCuM current testing

    • the high current chips where due to ASC settings (ldo’s, ADC, etc were on)

    • solution was to onto change certain bits in the ASC

    • weird: if changing the ASC setting from setting1 to setting2 doesn’t change the current. You need to power cycle the mote when going from setting1 to setting2.

    • enabling/disabling on-chip LDO

    • when unprogrammed, switches between 250uA and 350uA

  • Brian

    • looking at debouncing the lighthouse signals

    • processor speed used? 20 MHz?

    • cool demo on 3D localization with lighthouses on SCuM

Admin

  • can projecting computer also join the meeting and share screen?

  • encourage people to create accounts on crystalfree.org (and upload pictures)

  • No labels