Nolan Helmet N102 insert connections /wiring
Nolan produce a very nice "in helmet" headset system with earspeakers and a boom microphone called the N102 , This cleverly engineered system is made as user flexible as possible with many options ie MP3/radio reception , Rider to pillion intercom . bluetooth interface etc . by inserting a small PC board into a small socket in the helmet
There are a lot of people who have asked if our system can be interfaced to
the Nolan system? our answer is " yes" with a small custom
constructed adapter cable . The Nolan system uses a 3 connector 3.5mm plug
and socket system , Dick Smith and Jaycar electronics sell these 3 section plugs
in 3.5 mm size. There is also a 2.5mm "3 section" plug and
socket but it is not used in our system as it only connects to the
earspeakers/power and not the microphone
I was fortunate enough to be lent a Nolan Headset Unit to examine and I passed the Multimeter over it with glee , below is the results of the examination . The Nolan unit I had appeared to have both earspeakers in parallel not individually so stereo music does not appear to be an option , this seems an oversight for something made by clever Italians ,The unit uses 32 ohm speakers and I only ever found a 16 Ohm resistance which seems to indicate parallel connection perhaps I am wrong , however I digress. Visual examination of the flexible PC connection track also indicated this . the boom Microphone has a 1k approx resistance and appears to be an electret unit .
I have found the interconnections of the small PC blank that is inserted and have documented it below . A lot of it is self expainatory just be carefull soldering up the 3.5 mm "3 section" plug and dont melt and short the connections , There is another problem too . the diameter of the 3.5 mm Nolan female socket is smaller than the outer diameter of the 3.5mm "3 section" male plug shroud so you wont be able to use it , I resorted to filling the inside of the male 3.5mm "3 section" plug connections with hot glue for strength , water resistance and to prevent internal shorts at a later date , I then used heatshrink on the outside to replace the original shroud. Two layers of headshrink gives a nice firm resistance fit into the the female socket so it wont accidently fall out ,
There it is ! no guarantees its correct ( usual disclaimer) though I got it working ok . The sockets on the "Nolan N102" insert I have depicted as Plugs ( because they were easier to draw in Microsoft Paint ) note also that the small PC board is shown as a "looking through" as holding it up to the light . you can now visulise how the unit interconnects . the website has the connections for the K series headset just paralell up the K series earspeaker connections and connect the Nolan mic around the correct way .
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Pinfold Health Services Ltd., 1172 Arawa St. ,Rotorua , New Zealand ph +64-7-3488850 fax +64-7-3486555 firstname.lastname@example.org
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