Abhijit Kshirsagar
2 years ago
1 changed files with 31 additions and 0 deletions
@ -0,0 +1,31 @@ |
|||||
|
Name Hemanth |
||||
|
|
||||
|
1. Question text: |
||||
|
iHumidity Sensor / plants |
||||
|
|
||||
|
2. Design summary: |
||||
|
Overall is ok- needs more details of how each component integrates. |
||||
|
For example the idea of switching off the buzzer by the attending person is good - how is it implemented? |
||||
|
That should have been shown in the block diagram! |
||||
|
|
||||
|
3. Block diagram |
||||
|
Se above |
||||
|
|
||||
|
4. Power supply design |
||||
|
Your power supply design assumes 2mA of sensor current but that is not necessarily the case. |
||||
|
Your supply is basically open loop and any change in batery voltage will cause change in sensor supply! |
||||
|
|
||||
|
5. Industrial Design: |
||||
|
Not detailed enough! |
||||
|
|
||||
|
6. KICAD Design |
||||
|
Schematic: |
||||
|
Diode D1 is backwards - your design will never get power. |
||||
|
The Opamp is conneced to a unipolar supply - it will not be able to sink current to drive the buzzer! |
||||
|
|
||||
|
PCB: |
||||
|
Layout looks good. |
||||
|
|
||||
|
7. Pricing / BOM / Assembly |
||||
|
Your bom sheet has a "risk rate" number. What is that? |
||||
|
|
Loading…
Reference in new issue