Tag: talisman

Sugru – Alternative to Resin Casting

As an alternative to making mould and casting the electronics in resin epoxy is the possibility of the end user using the sugru to form their own enclosure.

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The image above shows the sugru formed using the finger squish method.

Users would need ot use thin white sugru above the illuminated LEDs but would be free to form their own shape and add their own colored sugru.

An additional advantage, other than removing the requirement for production of resin casting, is that it is understood from a non legal view, that the end user assembling the final device from the component parts and sugru housing would allow the talisman to be classified as components and not a final consumer electronics device. Because of this, there would be no requirement for the Talisman to undergo the expensive FCC electrical and emission testing standard process.

 

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Status – Hardware and Firmware

The table below lists the current status of the hardware functional tasks and (when required) the corresponding firmware driver source code.

Function Hardware Firmware
Reverse protection for magnetic connector Tested not req.
Lithium-ion battery charging Tested todo
Battery level sensing Tested todo
Voltage regulation Tested not req.
In circuit device programming (dev only) Tested not req.
Microprocessor high speed operation Tested todo
Microprocessor sleep mode operation todo todo
Inbuilt flash storage reading todo todo
Inbuilt flash storage clearing and writing todo todo
Three full color LEDs 1 of 3 done todo
Bluetooth serial data link (master mode) todo todo
Bluetooth RSSI proximity measurement todo todo
Vibration motor todo todo
Accelerometer XYZ sensing todo todo
Accelerometer single tap detection todo todo
Accelerometer double tap detection todo todo
Bluetooth beacon with plug pack todo not req.
USB cable with BT and Win7 bridge program todo todo
Android Bluetooth bridge app todo todo

The not req. indicates that driver source code is not required for the particular functional area.