Introdução
This month, we're cracking the case of the Withings Body Cardio, one of the most advanced consumer body composition weighing scales on the market today.
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O que você precisa
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Opening up the scale was not an easy task – there was a lot of double-sided tape involved.
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The back of the scale is fastened with four Torx screws – easy enough. The entire backplate, however, is glued to the front with double-sided adhesive cushions. Removing it simply involved pulling it firmly enough to break the adhesive, but not so hard as to break the connectors. A hairdryer can help loosen the adhesive under the 4 corners.
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With the backplate removed, you can immediately spot 4 loads cells, one in each corner.
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ARM MCU - MK22FN1M0VLL12 (NXP)
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weighing scale and body composition front-end IC - AFE4300 (Texas Instruments)
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battery charging IC (including battery protection) - BQ24095 (Texas Instruments)
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WiFi and Bluetooth radio - BCM43438 (Broadcom)
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flash memory - MX25L3233F (Macronix)
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op-amp - AD8544
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connector to the USB port PCB
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I’ve made an attempt to design a block diagram for the whole setup. This won’t be 100% accurate as I don’t know all the details but it will give you an idea on how the components are interlinked and work together.
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38 comentários
Hi please tell me what are battery dimensions. I need to order one - cause mine is already dead.
Hi, I never took note of the dimensions, it’s best you open up the scale yourself to check it out.
Since the battery is dead you’ll have to do it anyways ;)
Thanks for the breakdown info. I'm replacing the battery as well. It's 63x50x5mm. 2100 mAh, 7.98Wh, 3.8V
I think this battery should be exactly the same:
Samsung 2100 mAh Replacement Battery for Samsung Galaxy Avant SM-G386T https://www.amazon.com/dp/B00OY9BY6W/ref...
Hi,
my battery died as well. Was the Samsung battery the correct replacement?
With best regards
MArtin
