必要な工具と部品
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この手順は未翻訳です。 翻訳を手伝う。
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And we now present, a battery.
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There's a nice RoHS sticker there, suggesting it contains hazardous substances (couldn't possibly be referring to the combustibility of Li-ion batteries, could it?). Better not open it.
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The battery is held in place with a weak adhesive. Just pop it off with your fingers.
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この手順は未翻訳です。 翻訳を手伝う。
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And now, some obligatory close-ups of the circuit board.
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The identity of chip in the center of the board (second photo, in the red square) has eluded me for quite a while. The logo appears to read "CSI" but it actually turns out to be "csr". Given the size and mounting, it's probably a BlueCore4 series (not sure of the exact model).
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There could be something under the board the main chip is mounted on, but I don't have a way to get to it.
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There's a few mentions of Innovi on the board. According to LinkedIn, Innovi might be either Bluetrek's old name or their parent company.
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この手順は未翻訳です。 翻訳を手伝う。
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This was a lot easier to identify. It's an antenna.
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It's a "Fractus Slim Reach Xtend™ Bluetooth Wireless Headset Antenna", designed to also support 802.11b/g/n (basically anything in the 2.4Ghz range). It is tiny, only 7x3x1mm. It's not a particularly efficient antenna (rated at >50% radiation efficiency), but it was probably chosen for size. It's still a good one, I can be on the side of the house opposite of my phone and still have good reception.
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For only 1mm thicker, Bluetrek could have used the more efficient "Compact Reach Xtend™", with a radiation efficiency rating of >70%.
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コメント 1 件
I have a motorcycle helmet that I've already have a microphone embedded in, with a spot to plug in stand 3.5mm stereo headphones and has a 3.5mm 4-pole out (standard smatphone audio/mic adapter) so I can plug it into my phone and make calls and/or listen to music while riding the motorcycle. I would love to make it bluetooth but nobody anywhere apparently makes an adaptor to do this, the closest I could find is ones with a built in microphone which obviously would be useless while at freeway speeds.
What are the chances that you think I could pick one of these (or similar) up, tear it apart, snip the headphone/mic wires off the PCB and solder in my current mic and a 3.5mm jack for headphones? Sounds to me like it will work but I don't know all that much about these...
duneman711 - 返信