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Quote... <World's Smallest Wireless F1 Chip.>

An existential question... does a design have to exist in physical form with demonstrable functionality to deserve the recognition of being a worldfirst...? or is an engineering design sufficient to make the claim? I am relatively new to the world of social media claims so will be content whatever the reasoned outcome. Please clarify...

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Ade, that design looks awesome - great work :thumbsup:

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What sets this work apart from that of others (me included) is this work is being demonstrated at extreme levels of miniaturisation by a slot car brand using current manufacturing methods and established manufacturing supply chains - i.e. its very close to productisation. Very impressive indeed!!!

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Hi Diegu, I too have no doubt when this new product hits the market it will have appropriate pre-wired connections for braises and motors and thatvthese will be of the appropriate gauge for the quoted constant current ratings of the decoder.

Meanwhile since the engineering subject of wire rating has been raised... I believe there are two factors to consider here if anyone is contemplating using under-rated wiring:

1/ does under-rated wiring add series resistance that reduces overall system performance in terms of power transfer?
2/ does under-rated wiring risk over heating and/or melting of wiring insulation.

I suspect 1 is not significant here. Not sure about 2 - maybe ok for slotcars but the concept certainly wouldn't meet domestic wiring regulations.

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With this smaller chip, smaller components, achieving the same as the older larger chips, why does the antenna remain the same size?
Are there no substitutes for smaller antennas?

Enjoy,
Shad
With antennas, they are usually 1/4 of the wavelength in play so they don't scale with decoder size. However, the 1/4 wavelength can be achieved with a helical coil format (e.g. the short stubby antenna on police/business/amateur VHF/UHF radios). Some nRF modules use a spiral of copper on the pcb to avoid the soldered wire antenna. The problem with helical and spiral antennas is that they tend to be more direction sensitive, leading to reduced effective operating range.

All of that said, the flexible wire antenna at the standard length is easy to hide in most slotcar configurations.

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