SE PCBA

SE PCBA#

This page will guide you through the hardware assembly of the SE version Head Tracker, including both the transmitter and receiver.

Note

To obtain the project files, please visit oshwhub

Note

The SE hardware has not been officially released yet. Information will be updated later. Firmware version v1.1.x or above is required.

SE Transmitter#

PCB#

The PCB project is designed using LCSC EDA Professional Edition. DIY users can use LCSC’s free PCB prototyping activity to get free boards every month.

2D Overview#

2D_HT_se_top

2D_HT_se_bottom

Note

When ordering the PCB, select a finished board thickness of 1.6 and material JLC04161H-7628.

Bill of Materials#

For the detailed BOM, click to download: BOM_HT_se.xlsx

Preview BOM (SE TX)

No.

Quantity

Designator

Footprint

Value

Device

No.

数量

位号

封装

值

器件

1

2

C1,C5

C0402

10nF

CL05B103KB5NNNC

2

3

C2,C7,C10

C0402

10uF

CL05A106MQ5NUNC

3

4

C3,C6,C14,C16

C0402

1uF

CL05A105KA5NQNC

4

5

C4,C9,C13,C15,C17

C0402

100nF

CL05B104KO5NNNC

5

2

C8,C12

C0402

15pF

0402CG150J500NT

6

1

C11

C0402

2.2uF

CL05A225MQ5NSNC

7

1

L1

ANT-SMD_L3.1-W1.6

RFECA3216060A1T

8

1

LED1

LED0402-RD_GREEN

XL-1005UGC_C965793

9

1

LED2

LED0402-RD

XL-1005UBC_C22355736

10

2

R1,R2

R0402

10kΩ

0402WGF1002TCE

11

1

R3

R0402

1kΩ

0402WGF1001TCE

12

1

U1

LGA-14_L3.0-W2.5-P0.50-TL

ICM-42688-P

13

1

U2

SOT-23-3_L2.9-W1.6-P1.90-LS2.8-BR

ME6211A33M3G-N

14

1

U3

QFN-32_L5.0-W5.0-P0.50-TL-EP3.7

ESP32-C3FH4

15

1

U4

SOT-23-6_L2.9-W1.6-P0.95-LS2.9-BL

TTP223-BA6-TD

16

1

X1

CRYSTAL-SMD_4P-L2.0-W1.6-BL

40MHz

TAXM40M4ZHBCDT2T

17

1

Type-C

Type-C

带板TYPEC公头/TYPEC male with board

TYPE C拉伸公头16P立贴数据OTG取电带板5.1k四焊点L9.5mm

18

1

TOUCH

copper foil

圆形单面导电10mm/Round single-side conductive 10mm

导电铜箔/copper foil

Soldering & Assembly#

Note

The SE version uses single-sided SMD soldering, which is relatively easy. Therefore, the SMT process is not described here.

1. Prepare Materials#

You can use LCSC’s assembly service, or do the SMD soldering yourself using reflow soldering.

After SMD soldering, you need to prepare the following materials:

No.

Material Name

Image

1

Assembled mainboard

../_images/PCB_HT_SE_no_typec.jpg

2

Type-C male with board

../_images/typec_with_board.jpg

3

Copper foil

../_images/copper_foil.jpg

4

High-temp tape

../_images/Polyimide_tape.jpg

2. Solder Type-C#

Solder the Type-C male connector to the mainboard.

Solder the four pads on the mainboard to the four pins of the Type-C connector. Make sure the orientation of the Type-C connector is correct during soldering.

PCB_HT_SE_side

3. Solder Copper Foil#

The copper foil is the touch sensing area.

  1. Cut off one corner of the copper foil, then stick it inside the circular silkscreen area.

  2. Short the TOUCH pin to the copper foil with solder.

PCB_HT_SE_copper_foil

4. Flash Firmware#

  1. Short the BOOT pad.

  2. Connect the Type-C male connector of the tracker to your computer.

  3. Use the flashing tool to flash the firmware (refer to the PC operation part in Nano Flashing Tutorial).

  4. After flashing, disconnect the BOOT pad.

5. Apply High-temp Tape#

Cut a suitable length of high-temperature tape and stick it on the side with the copper foil.

Capacitive touch must have high-temp tape applied to work. Do not touch the copper foil directly with your finger.

PCB_RX_top

Nano Receiver#

PCB#

2D Overview#

2D_RX_se_top

2D_RX_se_bottom

Bill of Materials#

For the detailed BOM, click to download: BOM_RX_se.xlsx

Preview BOM (SE RX)

No.

Quantity

Designator

Footprint

Value

Device

No.

数量

位号

封装

值

器件

1

1

C1

C0402

10uF

CL05A106MQ5NUNC

2

4

C2,C5,C13,C15

C0402

1uF

CL05A105KA5NQNC

3

3

C3,C12,C14

C0402

100nF

CL05B104KO5NNNC

4

1

C4

C0402

10nF

CL05B103KB5NNNC

5

2

C6,C11

C0402

15pF

0402CG150J500NT

6

1

C7

C0402

22nF

0402B223K500NT

7

1

C8

C0402

22pF

0402CG220J500NT

8

1

C9

C0805

22uF

CL21A226MAQNNNE

9

1

C10

C0603

22uF

CL10A226MQ8NRNC

10

1

CN1

AUDIO-TH_PJ-3200

PJ-3200

11

1

LED1

LED0402-RD_GREEN

XL-1005UGC_C965793

12

1

R1

R0402

100kΩ

0402WGF1003TCE

13

1

R2

R0402

22kΩ

0402WGF2202TCE

14

2

R3,R4

R0402

10kΩ

0402WGF1002TCE

15

1

R5

R0402

5.1kΩ

0402WGF5101TCE

16

1

R6

R0402

4.7kΩ

0402WGF4701TCE

17

1

U1

QFN-32_L5.0-W5.0-P0.50-TL-EP3.7

ESP32-C3FH4

18

1

U2

IND-SMD_L2.5-W2.0-VLS252012CX-150M

4.7uH

FTC252010S4R7MBCA

19

1

U3

SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BL_3

MT2492

20

1

USB1

USB-C-SMD_XUNPU_TYPEC-304A-ACP16L

TYPEC-304A-ACP16L

21

1

X1

CRYSTAL-SMD_4P-L2.0-W1.6-BL

40MHz

TAXM40M4ZHBCDT2T

Soldering & Assembly#

The receiver is relatively simple. After SMD soldering, just flash the firmware.

Flashing is the same as the transmitter: short the BOOT pad, connect Type-C to the computer, and use the flashing tool to flash the firmware.

No further details here.