This design document is broken down in to multiple sections: the Preliminary Design Criteria Review, the Preliminary Schematic, the Preliminary Bill of Materials, and finally the Preliminary Budget. Each of these sections has information which is preliminary in nature, yet attempts have been made to make these as accurate as possible.
Schematic | Description | Package |
---|---|---|
C1 | 68uF Capacitor | SMD |
C2 | 120uF Capacitor | Axial |
D1 | 1N5817 Schottky diode | SMD |
L1 | 100uH Inductor | SMD |
Rb1 | 47k Ohm .25W Resistor | SMD |
Rb2 | 47k Ohm .25W Resistor | SMD |
U1 | LM2594M-3.3/NOPB Voltage regulator | SSOP-8 |
CN1 | Molex70555-0038 Locking connector | thru hole |
CN2 | Molex70555-0038 Locking connector | thru hole |
CN3 | Molex70555-0038 Locking connector | thru hole |
CN4 | Molex70555-0038 Locking connector | thru hole |
CN5 | Molex70555-0038 Locking connector | thru hole |
J1 | 5mm barrel jack, 2.1mm center pole | Std |
EPS Board (MSP430 MCU and MAC IC) | Board |
Schematic | Description | Package |
---|---|---|
CN1 | Molex70555-0038 Locking connector | Thru hole |
Cf1 | 1uF capacitor | SMD |
2 position screw terminals | Std | |
Rf1 | 4.7 Ohm .25W resistor | SMD |
Rf2 | 4.7 Ohm .25W resistor | SMD |
RL1 | 220 Ohm .5W resistor | SMD |
Rs | 3.9 mOhm 5W resistor | Axial |
Ra1 | 47k Ohm .25W Resistor | SMD |
Ra2 | 47k Ohm .25W Resistor | SMD |
S1,2 | 2 pos DIP switch | Thru hole |
U3 | INA226 Current and voltage sensor | SSOP-10 |
Current Sensor PC Board | Board | |
Molex 50-57-9404 (mating connector for cable) | Cable | |
Molex 50-57-9404 (mating connector for cable) | Cable | |
Alpha Wire 1174c SL005 4cond 22ga | Cable |
Schematic | Description | Package |
---|---|---|
CN1 | Molex70555-0038 Locking connector | Thru hole |
U2 | TMP102 Temp sensor (I2C) | SSOP-6 |
Temperature Sensor PC Board | Board | |
Molex 50-57-9404 (mating connector for cable) | Cable | |
Molex 50-57-9404 (mating connector for cable) | Cable | |
Alpha Wire 1174c SL005 4cond 22ga | Cable |
Schematic | Description | Prototype Cost | Production Cost |
---|---|---|---|
C1 | 68uF Capacitor | $0.49 | $1.15 |
C2 | 120uF Capacitor | $0.62 | $0.62 |
D1 | 1N5817 Schottky diode | $0.27 | $0.19 |
L1 | 100uH Inductor | $0.18 | $0.09 |
Rb1 | 47k Ohm .25W Resistor | $0.37 | $0.03 |
Rb2 | 47k Ohm .25W Resistor | $0.37 | $0.03 |
U1 | LM2594M-3.3/NOPB Voltage regulator | $2.70 | $2.70 |
CN1 | Molex70555-0038 Locking connector | 0.97 | $0.96 |
CN2 | Molex70555-0038 Locking connector | $0.97 | $0.96 |
CN3 | Molex70555-0038 Locking connector | $0.97 | $0.96 |
CN4 | Molex70555-0038 Locking connector | $0.97 | $0.96 |
CN5 | Molex70555-0038 Locking connector | $0.97 | $0.96 |
J1 | 5mm barrel jack, 2.1mm center pole | $4.95 | $1.12 |
EPS Board (MSP430 MCU and MAC IC) | $0.00 | $12.00 | |
Populated Ethernet Booster Pack (MSP430 MCU) | $25.00 | $25.00 | |
Labor | $1,362.50 | $120.12 | |
SUBTOTAL | $1,402.30 | $167.85 |
Schematic | Description | Prototype Cost | Production Cost |
---|---|---|---|
CN1 | Molex70555-0038 Locking connector | $0.97 | $0.96 |
Cf1 | 1uF capacitor | $0.14 | $1.15 |
Phoenix Contact 1714971 two position screw terminals | $1.34 | $1.31 | |
Phoenix Contact 1714971 two position screw terminals | $1.34 | $1.31 | |
Rf1 | 4.7 Ohm .25W resistor | $0.37 | $0.03 |
Rf2 | 4.7 Ohm .25W resistor | $0.37 | $0.03 |
RL1 | 220 Ohm .5W resistor | $0.37 | $0.03 |
Rs | 4 mOhm 4W resistor Ohmite 14AFR004E | $1.98 | $1.23 |
Ra1 | 47k Ohm .25W Resistor | $0.37 | $0.03 |
Ra2 | 47k Ohm .25W Resistor | $0.37 | $0.03 |
S1,2 | 2 pos DIP switch | $0.53 | $0.49 |
U3 | INA226 Current and voltage sensor | $6.33 | $3.38 |
Current Sensor PC Board | $0.00 | $4.00 | |
Molex 50-57-9404 (mating connector for cable) | $0.68 | $0.37 | |
Molex 50-57-9404 (mating connector for cable) | $0.68 | $0.37 | |
Alpha Wire 1174c SL005 4cond 22ga | $1.00 | $1.00 | |
Labor | $225.00 | $62.09 | |
SUBTOTAL | $241.84 | $77.81 |
Schematic | Description | Prototype Cost | Production Cost |
---|---|---|---|
CN1 | Molex70555-0038 Locking connector | $0.97 | $0.96 |
U2 | TMP102 Temp sensor (I2C) | $5.95 | $1.69 |
Temperature Sensor PC Board | $0.00 | $2.00 | |
Molex 50-57-9404 (mating connector for cable) | $0.68 | $0.37 | |
Molex 50-57-9404 (mating connector for cable) | $0.68 | $0.37 | |
Alpha Wire 1174c SL005 4cond 22ga | $1.00 | $1.00 | |
Labor | $75.00 | $29.21 | |
SUBTOTAL | $84.28 | $35.60 |
Board | Prototype Cost | Production Cost |
---|---|---|
Control Board | $1,402.30 | $167.85 |
Current Sensor Board | $241.84 | $77.81 |
Current Sensor Board | $241.84 | $77.81 |
Temperature Sensor Board | $84.28 | $35.60 |
TOTAL COST | $1969.96 | $359.07 |