Didn't realized its already week 3!! I met my supervisor Thursday before, and i show him the DIY PPG that i found on the internet. We had discuss about the DIY PPG. The cost is estimated around RM70.00. All of the components and the can be found as listed at table below.
Component for PPG
|
Vendor
|
MCP6004 IC
|
Online RS Component/jalan pasar
|
14 pin DIP socket
|
Jalan pasar
|
1k,150R,47k,5k potentionmeter,10k,680k,6.8k resistor
|
Jalan pasar
|
100nF,4.7uF
|
Jalan pasar
|
PCB
|
Jalan pasar
|
5 pin header
|
Jalan pasar
|
2n3904 transistor
|
Jalan pasar
|
Tcrt 1000 Reflective Optical Sensors
|
Online RS component/jalan pasar
|
3mm red led
|
Jalan pasar
|
But, i told my supervisor, that we can buy online for the complete PPG device which only cost 18 dollar. After few discussion, we found that there are disadvantages to buy things that we doesn't have experience about it. There are:-
- We don't know the output of the devices such as the sensitivity of it
- We don't know if modification of the circuit will effect too much of the circuit
- How long will the devices arrived at our place
Then, because of that matter, Sir Saiful Yusri suggest that to used the device that he used before for his students project. But, we have to wait around 2 weeks minimum for the device to be delivered. Though it is required 2 weeks, don't think that i'm on VACATION and not updating the blog...Will keep in touch in next blog..bye now...sleep..zzzzzZZZZzz
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