Chapter 2 Glove Implementation 73 Assembly

Now let's take a look for our main system of glove implementation.

Fig 2.58 Glove Implementation

The previous figure shows the whole main system after fix the flex sensors on glove and connected to the voltage divider circuit which also provide good balanced place to the accelerometer, then this circuit connected to the Arduino, on the Arduino there is XBee shield which there is the ZigBee connected to start transmission.


END OF Chapter 2  

Chapter 2 Glove Implementation 72 Assembly

2-7 Assembly

2.7.5 the whole main system

Now it's time to connect all of that with each other

Fig 2.57 some main system component

 

 

We fixed the Arduino on straight plate which will be fixed on the hand by strip.

Chapter 2 Glove Implementation 71 Assembly

And the next figure shows the PCB design of the pervious circuit and now  it's ready to be printed

Fig 2.56 PCB design of the main system circuit

Chapter 2 Glove Implementation 70 Assembly

And by using the ARES of Proteus 7 professional we have the design of the Printed circuit board ready to be printed.


Next figure shows the schemtic of the circuit

Fig 2.55 schematic of the main system

And the next figure shows the PCB design of the pervious circuit and now  it's ready to be printed...

Chapter 2 Glove Implementation 69 Assembly

2-7 Assembly

2.7.4 Printed circuit board

This section will shows PCB designs and schematic of the circuit .
the circuit which we use is the voltage divider circuit (see figure
2.3.3) but not only for one sensor but for all the flex sensors we use
and also it combined the 5 pins to connect the MPU-6050 module
with the Arduino and reserve the balance of the circuit.

By using the ISIS Proteus 7 professional we design the schematic of the circuit of voltage divider and pins of the accelerometer plus
additional part of analog multiplexing will be further discussed in
chapter 4.

And by using the ARES of Proteus 7 professional we have the design of the Printed circuit board ready to be printed.

Next figure shows the schematic of the circuit

Chapter 2 Glove Implementation 68 Assembly

The accelerometer is connected directly to the Arduino so it's not
need special circuit to connect it, but the accelerometer must be
mounted in the normal mode on glove itself. So it need just a
simple circuit all its role is to connect the accelerometer to Arduino
pins and to reserve the balance of the sensor on the various modes
(further discussed in Chapter 3).

In the next figure we shows the position of the accelerometer on
the normal mode on circuit

Fig 2.54 normal mode of the accelerometer (starting mode)

 

 

Please note that this circuit is not the final circuit, it is just test
circuit and also this circuit is not only for the accelerometer (has
other uses).

Chapter 2 Glove Implementation 67 Assembly

2.7.3 Mounting the accelerometer


When we deal with the accelerometer the most important thing to
take in consideration is the orientation and position of the
accelerometer .

We must choose normal mode or normal position to mounting the
accelerometer on it.

we take the decision that the normal mode occurs when the notch
of the chip of the MPU-6050 module at top left and the surface of
the sensor is parallel to the earth surface and perpendicular to the
direction of gravity of the earth.

From this point we start to compute the change in orientation.

Fig 2.53 MPU-6050 module chip up and down view

 

 

Please note that in the previous figure the photo is very large compared to real size of the chip which equal about 4 mm by 4 mm .