2 layers30.5 × 48.3 mm
ESP32 CP2102
jenschr/ESP32-workshop-files
Kidad files from my two-day workshop on creating an ESP32 based IoT device from scratch.
32 parts1MIT
4 layers22.9 × 50.8 mm
ESP32 S2 MINI 1
jenschr/LectureFeather7A Feather dev board based on ESP32-S2
- Size
- 22.9 × 50.8 mm
- Copper layers
- 4
- Thickness
- 1.69 mm
- Parts
- 50
- Nets
- 74
- Pads
- 261
- Tracks, vias
- 537, 67
- Pours
- 9
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 15 Sep 2022
- Updated
- 25 Nov 2025
Overview
ESP32 S2 MINI 1 is an open-source printed circuit board by jenschr, from the jenschr/LectureFeather repository on GitHub. It is a 4-layer board of 22.9 × 50.8 mm with 50 parts on 74 nets, routed with 537 tracks and 67 vias.
It is built around the ESP32-S3-MINI-1-N8, LTR-329ALS-01 and AP2112K-3.3TRG1, with the LIS3DH, MT8691AT and SHT31-DIS-F among its other parts. Its parts include 17 resistors, 8 ICs, 7 capacitors, 6 diodes and 5 connectors. It belongs with the microcontroller boards boards and the ESP32 boards of this library.
Main components
12
ESP32-S3-MINI-1-N8
SMD-104.5dBm -40℃~+85℃ 2.4GHz 20.5dBm 330mA 3V~3.6V 97mA Bluetooth5.0 ESP32-S3FN8 Chip On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD WiFi Modules ROHSEspressif SystemsWiFi Modules
LTR-329ALS-01
VDFN-4-30℃~+70℃ 16bit 2.4V~3.6V 64klx I2C Light Intensity VDFN-4 Ambient Light Sensors ROHSLite-OnAmbient Light Sensors
AP2112K-3.3TRG1
SOT-25-5-40℃~+85℃@(Ta) 1 250mV@(600mA) 3.3V 50uVrms 55uA 600mA 65dB@(1kHz) 6V Fixed Over Current Protection、Thermal Shutdown、Enable control Positive SOT-25-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSDiodes IncorporatedVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
LIS3DH
LGA-16(3x3)-40℃~+85℃ 1.71V~3.6V 16bit 500nA Accelerometer Motion event detection SPI、I2C X,Y,Z ±16g LGA-16(3x3) Accelerometers ROHSSTMicroelectronicsAccelerometers
MT8691AT
SOT-23-40℃~+125℃ 2.5mT 2V~5.5V 3.5mT 600nA Built-in oscillator Push-pull Unipolar SOT-23 Hall Switches ROHSNOVOSENSEHall Switches
SHT31-DIS-F
DFN-8DFN-8 New Arrivals ROHSSensirionUncategorised
RMCF0603JG10K0
0603-55℃~+155℃ 100mW 10kΩ 75V Thick Film Resistor ±200ppm/℃ ±5% 0603 Chip Resistor - Surface Mount ROHSStackpole Electronics (SEI)Chip Resistor - Surface Mount
MSK4005
SOD-523-55℃~+125℃ 150uA@40V 490mV@500mA 500mA 50V Independent SOD-523 Schottky Diodes ROHSShikuesSchottky DiodesLC8822-2020-6
SMD,2x2mmUncategorisedLed-Color
KMR241GLFS
SMD-40℃~+85℃ 1.9mm 100,000 cycles 2.8mm 32V 4.6mm 4N 50mA Gull Wing Round Button SPST-NO Surface Mount,Vertical SMD Tactile Switches ROHSC&KTactile SwitchesDMG3415U-7
SOT-23-55℃~+150℃ 1 P-Channel 1V 20V 25pF 294pF 42.5mΩ@4.5V 4A 9.1nC 900mW SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETs
TYPE-C-31-M-12
SMD-30℃~+80℃ 1 10,000 cycles 16P 20V 5A 7.35mm Female Surface Mount, Right Angle Type-C SMD USB Connectors ROHSHRO ElectronicsUSB Connectors
README
pcb/ESP32_S2_MINI_1/README.mdDev board for lecturing Embedded & M2M
Errata
Known bugs and limitations for this project
Version 1.1
Yet to be produced & tested.
Version 1.0
- APA102 used IO26 for data. This conflicts with PSRAM. Move to IO33.
- Temperature sensor is placed too close the the ESP-module, so it reads the temp of the board, not the air around it. Adafruit has a similar problem with the BME280 they use in their design.
- Type-C receptacle footprint works great for industrial production, but gives 30% failure/bridges when producing locally. Reduce size of pads for next revision.
- Boot-button needs more space so it's easier to press
Version 0.9 (not published to git)
- Swapped battery pins
- Swapped unstable BH1730 sensor
Parts
50| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 10k | Resistor_SMD:R_0402_1005Metric | R2, R3, R4, R5, R15, R16, R17 |
| 6 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C1, C2, C4, C5, C6, C7 |
| 3 | 1k | Resistor_SMD:R_0402_1005Metric | R1, R8, R11 |
| 3 | 5.1k | Resistor_SMD:R_0402_1005Metric | R9, R10, R14 |
| 3 | LED | LED_SMD:LED_0402_1005Metric | D1, D2, D5 |
| 2 | 100k | Resistor_SMD:R_0402_1005Metric | R6, R7 |
| 2 | 33R | Resistor_SMD:R_0402_1005Metric | R12, R13 |
| 2 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U1, U7 |
| 2 | MSK4005 | Diode_SMD:D_SOD-523 | D4, D6 |
| 2 | MountingHole | USB-C-Power-tester:MountingHole_2.0mm_NoPad | H2, H3 |
| 1 | 10uF | Capacitor_SMD:C_0603_1608Metric | C3 |
| 1 | APA102-2020 | LED_SMD:LED-APA102-2020 | D3 |
| 1 | BOOT | Button_Switch_SMD:SW_Push_1P1T_NO_CK_KMR2 | BOOT1 |
| 1 | Conn_01x02_Female | Connector_JST:JST_PH_B2B-PH-SM4-TB_1x02-1MP_P2.00mm_Vertical | J4 |
| 1 | Conn_01x12_Female | Connector_PinHeader_2.54mm:PinHeader_1x12_P2.54mm_Vertical | J2 |
| 1 | Conn_01x16_Female | Connector_PinHeader_2.54mm:PinHeader_1x16_P2.54mm_Vertical | J3 |
| 1 | DMG3415u | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | ESP32-S3-MINI-1 | Espressif:ESP32-S2-MINI-1 | U2 |
| 1 | HK Logo | feather:HK_engelsk-logo | H4 |
| 1 | LIS3DH | Package_LGA:LGA-16_3x3mm_P0.5mm_LayoutBorder3x5y | U5 |
| 1 | LTR-329ALS-01 | ToyTronics:LTR-329ALS-01 | U3 |
| 1 | MCP73831-2-OT | Package_TO_SOT_SMD:SOT-23-5 | U8 |
| 1 | MT8691AT | Package_TO_SOT_SMD:SOT-23 | U4 |
| 1 | MountingHole | USB-C-Power-tester:MountingHole_2.5mm_Pad | H1 |
| 1 | RESET | Button_Switch_SMD:SW_Push_1P1T_NO_CK_KMR2 | RESET1 |
| 1 | SHT31-DIS | Sensor_Humidity:Sensirion_DFN-8-1EP_2.5x2.5mm_P0.5mm_EP1.1x1.7mm | U6 |
| 1 | STEMMA | Connector_JST:JST_SH_BM04B-SRSS-TB_1x04-1MP_P1.00mm_Vertical | J5 |
| 1 | USB_C_Receptacle_USB2.0 | USB-C-Power-tester:TYPE-C-31-M-12 | J1 |
Questions
How big is the ESP32 S2 MINI 1 PCB?
It measures 22.9 × 50.8 mm and has 4 copper layers, 1.69 mm thick.
What parts does the ESP32 S2 MINI 1 use?
50 parts, built around the ESP32-S3-MINI-1-N8, LTR-329ALS-01, AP2112K-3.3TRG1 and LIS3DH. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the ESP32 S2 MINI 1 KiCad files?
From the jenschr/LectureFeather repository on GitHub, at the commit this page was made from: the board is pcb/ESP32_S2_MINI_1/ESP32_S2_MINI_1.kicad_pcb and its schematic pcb/ESP32_S2_MINI_1/ESP32_S2_MINI_1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the ESP32 S2 MINI 1 design in my own project?
Its repository states no licence, so its author keeps all rights: ask jenschr before reusing the design.
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