Bill of materials

The following tables contain components needed to assemble the StarPointer sensor kit. To overcome the PCB manufacturing cost, and reduce the board size, we employ many surface-mounted components in this module.

Designator	Value	Package	Quantity	Datasheet
R1	1MΩ	SMD 0805	1
R2, R3	100KΩ	SMD 0805	2
R4	10KΩ	SMD 0805	1
R5	680Ω	SMD 0805	1
R6	1.5KΩ	SMD 0805	1
R7, R8	22Ω	SMD 0805	2
C1, C2	22pF	SMD 0805	2
C3, C4	15pF	SMD 0805	2
C5, C6, C7, C8, C9, C10, C11, C14, C15	0.1μF	SMD 0805	9
C12	0.01μF	SMD 0805	1
C13, C16	1μF	SMD 0805	2
D1	RED LED	SMD 0805	1
FB1	5mm Axial Ferrite Bead	THT	1
Y1	32.768kHz Crystal	AT-310 (3mm)	1
Y2	8.00MHz Crystal	HC-49	1
BT1	CR1220 Battery Holder	SMD	1	https://cdn.harwin.com/pdfs/S8411R.pdf
J1	2.54mm, 3-Pin, Male Header	THT	1
J2	2.54mm, 4-Pin, Male Header	THT	1
J3	XM7D-0512 - USB Mini-B connector	THT	1	https://components.omron.com/eu-en/datasheet_pdf/G079-E1.pdf
M1	2.54mm, 8-Pin, Female Header	THT	1
M2	2.54mm, 6-Pin, Female Header	THT	1
U1	STM32F103C8T6	LQFP-48	1	https://www.st.com/resource/en/datasheet/stm32f103c8.pdf
U2	USBLC6-2SC6	SOT-23-6	1	https://www.st.com/resource/en/datasheet/usblc6-2.pdf
U3	RT9193-33GB	SOT-23-5	1	https://www.richtek.com/assets/product_file/RT9193/DS9193-16.pdf
M1 - Module	ADXL345 Module	THT Module	1	https://www.analog.com/media/en/technical-documentation/data-sheets/adxl345.pdf
M2 - Module	HMC5883L Module	THT Module	1	https://cdn-shop.adafruit.com/datasheets/HMC5883L_3-Axis_Digital_Compass_IC.pdf
BT1 - Battery	3V Lithium cell battery		1	https://www.panasonic-batteries.com/en/specialty/lithium-coin/coin-lithium-cr1220

In addition to the above components, the following modules and tools are required to test this unit:

• ST-Link/V2 programmer
• 3.3V USB to TTL serial adapter