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Code Issues Releases Wiki Activity

Updated Custom Bluetooth Scale (markdown)

OliE
2017-11-12 12:30:18 +01:00
parent 6b3272855a
commit d7b0b532d3
1 changed files with 76 additions and 76 deletions
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152
Custom-Bluetooth-Scale.md

@@ -12,14 +12,14 @@
<tr>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/parts/scale_hacked_front.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/parts/scale_hacked_front.JPG' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/scale_hacked_front.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/scale_hacked_front.JPG' width='250px' alt='image missing' /> </a> <br>
<sub>Figure A: Final result of the hacked bathroom scale (front)</sub>
</th>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/parts/scale_hacked_back.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/parts/scale_hacked_back.JPG' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/scale_hacked_back.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/scale_hacked_back.JPG' width='250px' alt='image missing' /> </a> <br>
<sub>Figure B: Final result of the hacked bathroom scale (back)</sub>
</th>
@@ -102,8 +102,8 @@ To minimize the power consumption a bit more I soldered out the power LED on the
So in the end I could power supply the Arduino for around 3 years with the 4 AAA batteries (960mAh). To power down all external modules, like the Bluetooth, EEPROM, RTC module, while the Arduino is in sleeping mode I used an external [BC546 NPN Transistor](https://github.com/oliexdev/openScale/raw/master/doc/bc546_transistor/bc546_datasheetpdf) as a switch. I connected the transistor as in figure 6.1 or figure 2.4.
<p align="center">
<a href="https://github.com/oliexdev/openScale/raw/master/doc/bc546_transistor/bc546_schematic.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/bc546_transistor/bc546_schematic.png' width='300px' alt='missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/bc546_transistor/bc546_schematic.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/bc546_transistor/bc546_schematic.png' width='300px' alt='missing' /> </a> <br>
<sub><b>Figure 6.1: Schematic of the BC546 NPN Transistor</b></sub>
</p>
@@ -182,20 +182,20 @@ For temporally storing the measured values, even if the power supply is disconne
<tr>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/eeprom_24lc512/24lc512_schematic.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/eeprom_24lc512/24lc512_schematic.png' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/eeprom_24lc512/24lc512_schematic.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/eeprom_24lc512/24lc512_schematic.png' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 5.1: Schematic of the 24LC512 I²C EEPROM</sub>
</th>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/parts/eeprom_front.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/parts/eeprom_front.JPG' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/eeprom_front.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/eeprom_front.JPG' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 5.2: I²C EEPROM module (front)</sub>
</th>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/parts/eeprom_back.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/parts/eeprom_back.JPG' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/eeprom_back.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/eeprom_back.JPG' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 5.3: I²C EEPROM module (back)</sub>
</th>
@@ -357,14 +357,14 @@ This time I bought a different [I²C RTC module](http://www.roboter-bausatz.de/3
<tr>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/parts/rtc_front.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/parts/rtc_front.JPG' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/rtc_front.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/rtc_front.JPG' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 4.1: I²C RTC module (front)</sub>
</th>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/parts/rtc_back.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/parts/rtc_back.JPG' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/rtc_back.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/rtc_back.JPG' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 4.2: I²C RTC module (back)</sub>
</th>
@@ -419,14 +419,14 @@ For a wireless connection from my scale to my Nexus 10 tablet I am using a HC-05
<tr>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/parts/bluetooth_front.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/parts/bluetooth_front.JPG' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/bluetooth_front.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/bluetooth_front.JPG' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 3.1: HC-05 Bluetooth module (front)</sub>
</th>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/parts/bluetooth_back.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/parts/bluetooth_back.JPG' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/bluetooth_back.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/bluetooth_back.JPG' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 3.2: HC-05 Bluetooth module (back)</sub>
</th>
@@ -520,20 +520,20 @@ In the previous step we had successful reverse engineered the scale's display. T
<tr>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/parts/arduino_front.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/parts/arduino_front.JPG' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/arduino_front.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/arduino_front.JPG' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 2.1: Arduino Pro Mini board</sub>
</th>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/parts/cp2102_front.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/parts/cp2102_front.JPG' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/cp2102_front.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/cp2102_front.JPG' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 2.2: CP2102 USB to Serial converter (front)</sub>
</th>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/parts/cp2102_back.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/parts/cp2102_back.JPG' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/cp2102_back.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/cp2102_back.JPG' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 2.3: CP2102 USB to Serial converter (back)</sub>
</th>
@@ -555,8 +555,8 @@ Note that I used 3.3V (see pin 3V3 on figure 2.3) from the CP2102 converter boar
I connected the scale's display connector to the Arduino Pro Mini as the following schematic:
<p align="center">
<a href="https://github.com/oliexdev/openScale/raw/master/doc/parts/schematic.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/parts/schematic.png' width='300px' alt='missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/schematic.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/parts/schematic.png' width='300px' alt='missing' /> </a> <br>
<sub><b>Figure 2.4: Schematic overview of the openScale project</b></sub>
</p>
@@ -881,8 +881,8 @@ Note to save memory usage the measured values are stored as integers and not as
First of all I had to find a suitable bathroom scale that I wanted to reverse engineer. I was searching for a cheap bathroom scale that can analyse not only my weight but also my body fat, water and muscle. The scale design should be clear and the display of the scale should have some kind of a simple seven segment display (I hoped that a simple display would be easier to reverse engineer). The [Sanitas SBF12 scale](http://www.sanitas-online.de/web/en/products/weight/SBF12.php) that I found in a department store seemed to be right for my purpose. So I bought one for only 20€ (around 25$), see figure 1.1.
<p align="center">
<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/package.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/package.JPG' width='300px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/package.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/package.JPG' width='300px' alt='image missing' /> </a> <br>
<sub><b>Figure 1.1: Sanitas SBF 12 scale</b></sub>
</p>
@@ -892,20 +892,20 @@ To gain access to the inside of the scale I had to unscrew only a few screws on
<tr>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scale_overview_raw.jpg" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scale_overview_raw.jpg' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scale_overview_raw.jpg" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scale_overview_raw.jpg' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 1.2: Scale overview</sub>
</th>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/circuit_board_back_raw.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/circuit_board_back_raw.JPG' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/circuit_board_back_raw.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/circuit_board_back_raw.JPG' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 1.3: Back side of the circuit board</sub>
</th>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/circuit_board_front_raw.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/circuit_board_front_raw.JPG' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/circuit_board_front_raw.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/circuit_board_front_raw.JPG' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 1.4: Front side of the circuit board</sub>
</th>
@@ -921,20 +921,20 @@ The first step was to connect all pins with wires that are routed to the display
<tr>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/circuit_board_back_wired_unorderd.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/circuit_board_back_wired_unorderd.JPG' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/circuit_board_back_wired_unorderd.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/circuit_board_back_wired_unorderd.JPG' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 1.5: Connected wires unordered</sub>
</th>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/circuit_board_back_wired_ordered.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/circuit_board_back_wired_ordered.JPG' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/circuit_board_back_wired_ordered.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/circuit_board_back_wired_ordered.JPG' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 1.6: Connected wires ordered</sub>
</th>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scale_overview_back_wired.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scale_overview_back_wired.JPG' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scale_overview_back_wired.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scale_overview_back_wired.JPG' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 1.7: Back side of the scale wired</sub>
</th>
@@ -943,20 +943,20 @@ The first step was to connect all pins with wires that are routed to the display
<tr>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scale_overview_front_wired.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scale_overview_front_wired.JPG' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scale_overview_front_wired.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scale_overview_front_wired.JPG' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 1.8: Front side of the scale wired</sub>
</th>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/wired_with_notes.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/wired_with_notes.JPG' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/wired_with_notes.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/wired_with_notes.JPG' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 1.9: Attached notes to the wires</sub>
</th>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/display_connector_pin_layout.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/display_connector_pin_layout.png' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/display_connector_pin_layout.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/display_connector_pin_layout.png' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 1.10: Pin layout of the display connector</sub>
</th>
@@ -966,8 +966,8 @@ The first step was to connect all pins with wires that are routed to the display
Next step is to analyse the signals that are controlling the display. I had the opportunity to use a 16 digital channels oscilloscope ([Agilent Technologies MSO7014B](http://www.keysight.com/en/pd-1788165-pn-MSO7014B/mixed-signal-oscilloscope-100-mhz-4-analog-plus-16-digital-channels)) for this step, see figure 1.11. Alternative you can use a microcontroller like [Arduino](http://www.arduino.cc/) to read the signals.
<p align="center">
<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/oscilloscope.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/oscilloscope.JPG' width='300px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/oscilloscope.JPG" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/oscilloscope.JPG' width='300px' alt='image missing' /> </a> <br>
<sub><b>Figure 1.11: The 16 digital channels oscilloscope for analysing the signals</b></sub>
</p>
@@ -1000,20 +1000,20 @@ The question for the reverse engineering process was how the signals would respo
<tr>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_P01.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_P01.png' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_P01.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_P01.png' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 1.12: signals of value "P-01"</sub>
</th>
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<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_P02.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_P02.png' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_P02.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_P02.png' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 1.13: signals of value "P-02"</sub>
</th>
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<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_P03.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_P03.png' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_P03.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_P03.png' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 1.14: signals of value "P-03"</sub>
</th>
@@ -1022,20 +1022,20 @@ The question for the reverse engineering process was how the signals would respo
<tr>
<th>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_P04.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_P04.png' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_P04.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_P04.png' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 1.15: signals of value "P-04"</sub>
</th>
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<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_P05.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_P05.png' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_P05.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_P05.png' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 1.16: signals of value "P-05"</sub>
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<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_P06.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_P06.png' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_P06.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_P06.png' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 1.17: signals of value "P-06"</sub>
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@@ -1044,20 +1044,20 @@ The question for the reverse engineering process was how the signals would respo
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<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_P07.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_P07.png' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_P07.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_P07.png' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 1.18: signals of value "P-07"</sub>
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<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_P08.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_P08.png' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_P08.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_P08.png' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 1.19: signals of value "P-08"</sub>
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<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_P09.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_P09.png' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_P09.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_P09.png' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 1.20: signals of value "P-09"</sub>
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@@ -1066,20 +1066,20 @@ The question for the reverse engineering process was how the signals would respo
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<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_0_0kg.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_0_0kg.png' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_0_0kg.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_0_0kg.png' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 1.21: signals of value "0.0 kg"</sub>
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<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_person.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_person.png' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_person.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_person.png' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 1.22: signals while displaying the person symbol, see signal on D8 and D9</sub>
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<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_person_age.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/scope_person_age.png' width='250px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_person_age.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/scope_person_age.png' width='250px' alt='image missing' /> </a> <br>
<sub>Figure 1.23: signals while displaying the person and age symbol, see signal D8 and D9</sub>
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@@ -1091,8 +1091,8 @@ For decoding the 8 Bit word I compared the recorded signals. I first chose two n
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<a href="https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/seven_segement.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/sanitas_sbf12/seven_segement.png' width='200px' alt='image missing' /> </a> <br>
<a href="https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/seven_segement.png" target="_blank">
<img src='https://github.com/oliexdev/openScale/raw/master/doc/custom_scale/seven_segement.png' width='200px' alt='image missing' /> </a> <br>
<sub>Figure 1.24: seven segment display</sub>
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