Was du brauchst
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Technical Specifications
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1 MHz RISC 16 Bit MicroController, Active Mode @ 400uA
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Ultra Low-Power Consumption at Standby Mode @ 1.3uA, and Off-Mode with RAM Retention @ 0.22uA
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Sensors onboard: Optical blood flow; Galvanic Skin response (perspiration), Ambient Temperature, Body Temperature, 3-Axis Accelerometer
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First, you begin by taking off the straps. . If you have taken out a watch strap before, it is a similar method
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Flip the watch, use the plastic opening tool and slide into end of the strap, then push the spring contacts until the strap just breaks away from its catch
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Independent electrodes to possibly modulate AC Signal onto your skin and measure at the receiving end. Possibly measuring impedance (thereby knowing how much you sweat)
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Unscrew the four screws at the back of the watch, then gently use the spudger to open it
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Remove the elastomeric (aka zebra) connector
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Then pull the power plug away from its supply point to remove the battery
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Unknown battery capacity
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You see the gap in between here? That gap exist where the LCD sits beneath the MCU board.
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Using a bit of highly precise de-soldering technique (left quite a few melted marks btw), you have to desolder the 4 contact points in order to separate the board from the LCD panel
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1st Temperature Sensor (Texas Instruments) TMP112 marked as OBS. This might be one of the sensors that detects the ambient temperature as it is positioned away from the human body
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25P32V6G - ST 32MB NOR Serial Flash Memory
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Analog Devices - ADXL335B, 3-Axis Accelerometer
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Freescale MPR121 Proximity Capacitive Touch Sensor Controller (for the 4 capacitive touch buttons) as listed at this site & pictured here
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MSP430xG461x- Texas Instruments MSP430 family of ultralow-power mixed signal microcontroller. Built-in Temperature Sensor.
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Unknown 31939591322
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Unknown H852 3N47
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I'm quite interested of what they have done here. Instead of doing their own RF design, they employed a module design. Too bad there is no way to give the RF Module company any publicity Edit - the module is BT23 from ampedrf
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Cortex M3 - STM32F103C6; Low-density performance line, ARM-based 32-bit MCU with 16 or 32 KB Flash, USB, CAN, 6 timers, 2 ADCs, 6 communication interfaces. Built-in temperature sensor here
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Unknown 2500D8, 90MT323 Bluetooth Transceiver Chip
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Chip Antenna
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The wire bonded Optical Blood Flow Sensor (under a magnifying glass) with the two LED
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2nd Temperature Sensor (Texas Instruments) TMP112 marked as OBS. This might be one of the sensors that detects the body temperature as it is positioned nearer to the human body
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The Basis B1 Tracker was an easy device to disassemble. Apart from the de-soldering process, it could quite be a minimal effort.
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That's it, leave more comments below if you would like to have more additional details of the specific part you are interested in.
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4 Kommentare
I don't see any mention of USB on the MSP430's data sheet, so those two unknown chips *might* be a USB-serial bridge and an EEPROM for the VID/PID/etc. They're right next to what seems to be an oscillator too.
I didn't separate the boards on mine so I couldn't get a good look, but my battery was marked: Cyber-Power CYL-352426 3.7V, 190mAh
Quick comment, the temperature sensors used in the device are not the ones embedded in the microcontrollers but the 2 TMP112. These are the ICs with SOT563 package marked as OBS.
Thanks Luis!, I will update the page shortly. PS; you can update this page too. I've set edit reputation to 0 should the general public discover more information than me