Team 201

EGR 314

2/3/23

Humidity Sensor

Part Name: HIH6130-021-001

Solution	Pros	Cons
	Low operating voltage	Very expensive
Option 1	Footprint and schematic symbols provided	Possible long lead time
Board Mount Humidity Sensors I2C,5 %RH,SOIC-8 SMD NO FILTER,NON-COND	Wide range of operating temperatures
$18.14
Link to data sheet

Part Name: HIH6030-021-001

Solution	Pros	Cons
	Low operating voltage	Expensive
Option 2	I2C compatible	Possible long lead time
Board Mount Humidity Sensors I2C 4.5%RH SOIC-8 SMD non-condensing	Wide range of operating temperatures	No footprint provided
$12.31
Link to data sheet

Part Name: HIH7130-021-001

Solution	Pros	Cons
	Low Operating Voltage	Expensive
Option 3	I2C compatible	Possible long lead time
Board Mount Humidity Sensors SOIC 8 SMD w/o filter Non-condensing	wide range of operating temperatures	No filter
$13.84	Footprint providded
Link to data sheet

Choice: Option 1 HIH6130-021-001

Rationale: This SMD humidity sensor is the most expensive, but also the most reliable. It has a built-in filter to protect itself from contaminants. It has built in condensation resistance. It has a provided PCB footprint and diagram schematic. Additionally, it has a wide temperature range making it ideal for harsh environments.

Temperature/Altitude Sensor

Part Name: MS561101BA03-50

Solution	Pros	Cons
	Low voltage	Relatively expensive
Option 1	High accuracy for precise results	Long lead time
Pressure Sensor 0.15PSI ~ 17.4PSI (1kPa ~ 120kPa) Absolute 24 b 8-SMD	Wide range of working temperatures
$13.30
Link to data sheet

Part Name: TC74A4-3.3VCTTR

Solution	Pros	Cons
	Small with space out prongs	Greater voltage
Option 2	Wide range of temperatures	Long lead time
Temperature Sensor Digital, Local -40°C ~ 125°C 7 b SOT-23-5	I2C compatible
$1.09
Link to data sheet

Part Name: STS-30-DIS

Solution	Pros	Cons
	Wide range of temperatures	Very close together pins
Option 3	Good efficiency	Not very dexcriptive data sheet
SENSOR DIGITAL 0C-65C 8TDFN		Potentially need higher votage
$2.22
Link to data sheet

Choice: Option 2 TC74A4-3.3VCTTR

Rationale: We picked this one due to its wide range of temperatures. This allows the device to be in a variety of climates and still be able to provide alerts for the user. It also has very spaced out pins allowing it to be easier to solder without potential bridges. It also is relatively inexpensive which allows our team to order a bunch of them in case errors occur.

LED

Part Name: 150060SS75000

Solution	Pros	Cons
	Easier to Wire	Stuck to one color, limiting options
Option 1	Very bright	Low quality
LED RED CLEAR 0603 SMD	Inexpensive	Can burn out quickly
$0.15
Link to data sheet

Part Name: APHF1608LSEEQBDZGKC

Solution	Pros	Cons
	More diversity of color	Requires more wiring and more complicated programming
Option 2	More unique and distinguishable	More difficult to replace
LED RGB CLEAR 4SMD		Relatively expensive
$0.77
Link to data sheet

Solution	Pros	Cons
	More diversity of color	Requires more wiring and more complicated programming
Option 3	Easier to Wire	Stuck to One Color which limits options
CV94D-FCC-CYBB0B0E0WBYABB7A363	Bulbs	Cheaply Made and can easily burn out
$0.44		Not very nice
Link to data sheet

Choice: Option 2 APHF1608LSEEQBDZGKC Rationale: It allows for more diversity of color in letting the user see ranges. We can use custom ranges, for example: setting the LED to different colors based on a sensor reading, like temperature.

Motor Driver

Part Name: IFX9201SGAUMA1

Solution	Pros	Cons
	Used in class	Needs 5v minimum supply
Option 1	Team has more experience with it
IC HALF-BRIDGE DRVR 2 CH 12DSO	2 half-bridges
$4.88
Link to data sheet

Part Name: IFX9201SGAUMA1

Solution	Pros	Cons
	2 half bridges	Needs 5v minimum supply
Option 2	Has more fault protection	Relatively expensive
IC DRIVER 12DSO	Made for automotive
$5.38
Link to data sheet

Part Name: ATA6832C-PIQW-1

Solution	Pros	Cons
	3 half bridges	Needs 4.5v minimum supply
Option 3	Multiple load types	Relatively expensive
IC HALF-BRIDGE DRVR SPI 18QFN	Has more fault protection	Needs a price quote before orderin(more lead time)
Need to get price quoted
Link to data sheet

Choice: Option 1 IFX9201SGAUMA1

Rationale: We will be more familiar with this motor driver and since all our options require SPI communication and we plan to use i2c for the rest of the project, it will be very helpful to be familiar with this component before using it in the final project. Outside of familiarity, it is cheaper than the other two objects.

Voltage Regulator

Part Name: MAX5033AASA+T

Solution	Pros	Cons
	Large temperature range(-40C to +125C)	Relatively expensive
Option 1	High efficiency under intended operating conditions(<80%)	Efficiency is reduced due to our intended Vin(7.5v)
C REG BUCK 3.3V 500MA 8SOIC	Low quiescent current draw(~270 uA)	Only 500 mA output
$3.87
Link to data sheet

Part Name: ADP1110AR-3.3

Solution	Pros	Cons
	Outputs required current	Modularity means more connections required for configuring in step-down mode
Option 2	Configurable for battery indicator	Lower temperature operating range than other options
UPWR, STEP-UP/DOWN SWITCHING REG	Relatively inexpensive	Requires difficult to source 1N5818 diode(Potentially viable with 1N5819 diode)
$0.53	Expansive data sheet
Link to data sheet

Part Name: L6981N33DR

Solution	Pros	Cons
	Greatest max current output	Lower max soldering temperature
Option 3	Low noise and low consumption version available for light load	Relatively expensive
IC REG BUCK 3.3V 1.5A 8SO	High values for reverse voltage and current protection
$3.02	Large temperature operating range
Link to data sheet

Choice: Option 3: L6981N33DR

Rationale: This voltage regulator features the highest Imax out of the other options, while featuring an extremely expansive and detailed datasheet. The listed application circuits, expected scope outputs and operating characteristics will easily allow the team to understand when the device is not operating correctly. The two operation modes will allow us to tailor the regulator circuit to the needs of the rest of our embedded system.

7.4v Battery Pack

Part Name: L74A52-4-3-2WX

Solution	Pros	Cons
	High mAh	Relatively expensive
Option 1	Short lead time
BATTERY PACK LI-ION 7.4V 18650
$26.44
Link to data sheet

Part Name: L74A26-2-1-2WX

Solution	Pros	Cons
	Relatively small footprint	Relatively Expensive
Option 2	Short lead time
BATTERY PACK LI-ION 7.4V 18650
$17.87
Link to data sheet

Part Name: L74A52-4-10-2WX

Solution	Pros	Cons
	High mAh	Expensive
Option 3	Short lead time	Bulky
BATTERY PACK LI-ION 7.4V 18650
$26.44	Footprint providded
Link to data sheet

Choice: Option 2 7.4v Battery Pack: L74A26-2-1-2WX

Rationale: It is the cheaper and most compact option. It has enough mAh for our needs, and we have proven it has worked to power our selected motor in the past.

Motor

Part Name: MOT-KM NJSC-12-A

Solution	Pros	Cons
	High mAh	Relatively expensive
Option 1	Short lead time
12MM SPUR GEAR MOTOR - BRUSHED,
$18.75
Link to data sheet

Part Name: PPN7PA12C1

Solution	Pros	Cons
	Inexpensive to replace	Low torque
Option 2	Small	Hard to attach an axle
STANDARD MOTOR 11605 RPM 5V	High RPM
$3.34	Lightweight
Link to data sheet

Part Name: SE10JOVTM

Solution	Pros	Cons
	Extremely small	Can only be ordered in quantities of 25
Option 3	Well balanced between RPM and torque	made to order
STANDARD MOTOR 7000 RPM 5V	Lightweight	Expensive
$34.72	Footprint providded
Link to data sheet

Choice: Option 1 MOT-KM NJSC-12-A DC brushed motor

Rationale: The MOT-KM NJSC-12-A DC brushed motor is more expensive, but it is small enough to fit multiple in a small frame, and is lightweight, preventing the robot from becoming too heavy. It has high torque due to the gearbox and has a lower rated current draw compared to the other two.