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STD ESP32-PICO-D4 smart watch

Profile:ESP32-based ultra-low power multi-function watch

License: CC-BY-NC-SA 3.0

Creation time: 2023-08-28 11:34:16
Update time: 2023-08-28 15:13:01
project from OSHWHub user 启凡科技
Real computer projection demo link: https://www.bilibili.com/video/BV1WR4y1H72X?share_source=copy_web
Thickness: The whole machine is the same as the Redmi watch at 10.8mm (450mah 403040 lithium battery)
Lowest Power Standby Mode: 37uA
The main power consumption comes from the DCDC chip (TYP17uA), if you are not short of money, you can choose a chip with lower static power consumption
Exchange group number: 216066270
1) The MPU adds POWER enable, and the power can be turned off when not in use
2) Change to 4-layer board design
3) The antenna and light sensor are moved up by 0.6mm to better receive the external optical fiber conduction
4) Complete shell modeling design and verification
Some notes:
1) The battery is 403040 450mah with a thickness of 10.8. If you use 300mah, it can be thinner by 1mm
2) I am very busy and have little time to write software, but I will update the progress in a long-term unstable time
1) Add an external RTC to prevent other people from adjusting the internal RTC oscillator error calibration, and also bring lower standby current (specifically, the hardware has been tested)
2) The serial port chip is changed to the cheaper CH9012, the rate is increased to 4Mbps, double that of CP2014, and the download is fast
3) The basic test package is not yet adapted to RTC management
1) Upload the basic test SDK package and use it as follows:
The environment is the Arduino development mode project created under the Platform IDE
Uncomment the two lines in the setup to test the lowest power consumption. Comment out to test whether all peripherals are working properly.
Probably the bottom-level stuff is written, and then the APP can be developed on the basis
main part:
1) Master ESP32
2) 1.28-inch round screen (without touch screen, why not use touch screen, because it is poor)
1.With vibrator
2.wifi bluetooth
3.UART+ automatic download
4.Ambient Light Sensing
5.Gyroscope, accelerometer
6.Lithium battery power management
7.Low static power dcdc
8.Environmental temperature and humidity sensor
9.Four programmable keys
10Screen, temperature and humidity sensor, ambient light sensor power enable controllable
11.Power plug-in identification.
Extended use:
1) Somatosensory remote control (games, model airplanes, remote control cars...)
2) Game console
3) Mini extended data display
4) Smart Home Controller
5) Most of the functions of other smart watches (except GPS\NFC\heart rate, etc.)
If you can't even buy components, then you are not suitable for this project, stop it Awei, start with the simple
Don’t remind me to add GPS, heart rate, etc. I don’t need those functions, thank you
PCB proofing thickness 0.8mm
Welding is very difficult without steel mesh and heating table, and you can match it yourself whether you can weld
The project has just started. The hardware is open source first. You can write your own software.
Design Drawing
schematic diagram
1 /
1 /
ID Name Designator Footprint Quantity JLCPCB Part Class
1 10uF C1,C2,C6,C17 CAP 0603 4 cap 0603
2 4.7uF C3,C11 CAP 0603 2 cap 0603
3 0.1uF C4,C7,C8,C9,C10,C12,C16 CAP 0603 7 cap 0603
4 2.2nF C5 CAP 0603 1 cap 0603
5 0.01uF C13 CAP 0603 1 cap 0603
6 9pF C14 CAP 0603 1 cap 0603
7 9pf C15 CAP 0603 1 cap 0603
8 1uF C18 CAP 0603 1 cap 0603
9 T4 D1 SOD-323_L1.8-W1.3-LS2.5-RD 1 1N4148WS-T4
10 OA-C07 L1 OA-C07 1 OA-C07
11 2.2uH L2 IND-SMD_L2.5-W2.0_SWPA252012S 1 SWPA252012S2R2N
12 TFT_1.28_GC9A01_CB0.8 LCD1 TFT_1.28_GC9A01_CB0.8_IC1.5 1 TFT_1.28_GC9A01_CB0.8
13 AO3400 Q1,Q4 SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR 2 AO3400_C841146
14 AO3401 Q2,Q5,Q6 SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR 3 AO3401
15 BC847 Q3 SOT-363_L2.0-W1.3-P0.65-LS2.1-TL 1 BC847BS,115
16 300K R1 RES-0603 1 res-0603
17 75K R2 RES-0603 1 res-0603
18 2.7M R3 RES-0603 1 res-0603
19 3.3 R4,R13 RES-0603 2 res-0603
20 39K R5 RES-0603 1 res-0603
21 910K R6 RES-0603 1 res-0603
22 3M R7 RES-0603 1 res-0603
23 10K R8,R9,R12 RES-0603 3 res-0603
24 330 R10 RES-0603 1 res-0603
25 100 R11 RES-0603 1 res-0603
26 20K R14 RES-0603 1 res-0603
27 100K R15,R17 RES-0603 2 res-0603
28 10k R16,R18 RES-0603 2 res-0603
29 * R21 RES-0603 1 res-0603
30 轻触开关小龟 SW1,SW2,SW3,SW4 轻触开关小龟 4 轻触开关小龟 https://item.taobao.com/item.htm?id=522575825388
31 ESP32-PICO-D4 U1 QFN-48_L7.0-W7.0-P0.50-BL-EP5.1 1 ESP32-PICO-D4
32 MPU6050 U2 QFN24_L4.0-W4.0-P0.5-TL-EP2.45 1 MPU6050
33 SGM40561-4.2YTDE8G/TR U3 TDFN-8L_L2.0-W2.0-P0.50-BL-EP 1 SGM40561-4.2YTDE8G/TR
34 SHTC3 U4 SENSORM-SMD_4P-L2.0-W2.0-P1.00 1 SHTC3
35 motor_shock_1020 U5 MOTOR_1020 1 motor_shock_1020
36 BM8563EMA U7 MSOP-8_L3.0-W3.0-P0.65-LS5.0-BL 1 BM8563EMA
37 MP2162GQH-Z U8 QFN-8_L2.0-W1.5-P0.50-BL 1 MP2162GQH-Z
38 CH9102F U10 QFN-24_L4.0-W4.0-P0.50-BL-EP2.5 1 CH9102F
39 TEMT6000X01 U14 SENSORS-SMD_TEMT6000X01 1 TEMT6000X01
40 TYPE-C-16M-005 USB1 USB-C-SMD_TYPE-C-16M-005 1 TYPE-C-16M-005
41 32.768KHz X1 OSC-SMD_L3.2-W1.5 1 FC-135R


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