HardLabs

TinyBot32

ZhaoXingPeng·TinyBot32·research/competitors/watchy/Watchy.kicad_pcb

TinyBot32 PCB layout, top view — open source ESP32 board by ZhaoXingPeng

About the TinyBot32 PCB

TinyBot32 is an open source ESP32 PCB design by ZhaoXingPeng, published on GitHub under the MIT license. It is a 4-layer board measuring 33.8 × 46 mm, with 75 components from 40 distinct parts.

Its main chip is the ESP32-S3, from the ESP32 family. Other key parts include the SR2HARU, RT908033, TP4054, USBLC6-2P6 and BMA423. By type, the board carries 28 capacitors, 20 resistors, 6 ICs, 5 diodes, 4 switches and 3 transistors.

It belongs with the robotics & motion and displays & leds designs in this gallery.

From the project

面向 ESP32-S3 的超小型开源语音视觉机器人：自研 PCB 集成相机、音频、姿态与环境感知，覆盖硬件、固件与 3D 模型。

规格：约 45×38×13 mm 表盘，ESP32-PICO-D4，1.54" 电子墨水屏 200×200，6 轴 IMU，震动马达，4 实体按键，RTC，SD 卡。

开源程度最高的竞品：完整 KiCad 源文件（原理图 + PCB）+ STEP 3D 模型全部公开。

- 仓库 SQFMI/watchy-hardware 为开源硬件，CERN-OHL-W-2.0 许可（见上游 LICENSE）。 - KiCad 源文件可学习、可参考、可改，按 CERN-OHL-W-2.0 条款再发布。

- KiCad 完整开源流程：原理图+PCB+3D 一体化公开，是"开源硬件"的标杆做法。 - 1.54" 电子墨水屏 + 200×200 的功耗/常显思路（vs 本项目 1.28" 圆屏彩屏的取舍）。 - 表盘形态的传感器布局（IMU 居中、马达偏心、按键四角）。

Main components on the TinyBot32

SR2HARURT908033TP4054ESP32-S3USBLC6-2P6BMA423

TinyBot32 bill of materials (BOM)

75 components, 40 distinct parts.

QtyPartRefs
1
SR2HARU
U1
1
RT908033
U2
1
TP4054
U3
1
ESP32-S3
U4
1
USBLC6-2P6
U5
1
BMA423
U6
1
Vibration_Motor
M1
1
CJ2301
Q1
1
S8050
Q2
1
AO3400A
Q3
1
32.768KHz
Y1
1
40MHz
Y2
1
Battery
J1
1
Micro USB
J2
1
FPC24(0.5MM)
J3
1
Antenna_Chip
AE1
1
BTN2
SW1
1
BTN1
SW2
1
BTN3
SW3
1
BTN4
SW4
Show 20 more
QtyPartRefs
4
MBR0530
D1, D3, D4, D5
1
1N4001
D2
1
TBD
L1
1
47uH 0.5A
L2
2
10uF
C1, C10
4
1uF
C2, C3, C4, C15
6
100nF
C5, C6, C11, C12, C13, C14
2
TBD
C7, C9
2
22pF
C16, C19
2
18pF
C17, C18
2
4.7uF/50V
C20, C21
8
1uF/50V
C22, C23, C24, C25, C26, C27, C28, C29
4
10K
R1, R3, R18, R20
9
100K
R2, R4, R6, R7, R8, R10, R11, R15 +1
2
51K
R5, R14
1
360K
R9
1
TBD
R12
1
1K
R13
1
1M
R16
1
2.2
R17

TinyBot32 design files

The KiCad project lives in the ZhaoXingPeng/TinyBot32 repository on GitHub; these links point at the commit this page was built from.

TinyBot32: common questions

What microcontroller does the TinyBot32 use?

The TinyBot32 is built around the ESP32-S3, from the ESP32 family.

How big is the TinyBot32 PCB?

The TinyBot32 measures 33.8 × 46 mm, has 4 copper layers and is 1 mm thick.

How many components are on the TinyBot32?

75 components, from 40 distinct parts. The full bill of materials is listed on this page.

Where can I download the TinyBot32 design files?

From the ZhaoXingPeng/TinyBot32 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the TinyBot32 design in my own project?

Yes, under the terms of its MIT license, which ZhaoXingPeng chose for the repository.

Can I test firmware for the TinyBot32 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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