Specifications

130
6.4 Bill of Materials
Due to the variety of materials used, the bill of materials was separated into two
main sections. All items are listed below, although multiple items of the same
value or specific identity are not listed multiple times; rather, they have their
quantity numbers adjusted accordingly. Specific suppliers were not listed as this
is a simple bill of materials.
Power Supply
Device
Description
Manufacturer
Part Name
QTY
Charging
circuit
Charging IC for two cell Li-Ion Poly
batteries
Texas
Instruments
BQ24005P
WP
5
Resistor
720kΩ
Rohm
Semiconductor
MCR18EZH
F7323
200
Resistor
81kΩ
Panasonic -
ECG
ERJ-
8GEYJ823V
200
Resistor
0.1Ω
Vishay
233R-1
10
Resistor
470Ω, 0.5W
Ultraonix
HS210A
50
Resistor
560Ω, 1W
Ultraonix
HS510A
50
Resistor
0 Ω
Panasonic -
ECG
ERD-S2T0V
50
Jumper
Jumper Shuts
Tyco
Electronics
382811-8
25
Battery
7.4V Li-Po battery
Batteryspace
2362
2
Voltage
Regulator
3.3Vdc voltage regulator
Texas
Instruments
TLV1117-33
5
Voltage
Regulator
5Vdc voltage regulator
Texas
Instruments
TL780-05
5
PCB
Printed Circuit Board
Sunstone
Circuits
custom
8
LED
Red LED
MPJA
WP4060ID
100
LED
Green LED
MPJA
WP4060GD
100