4 layers41 × 90.2 mm
2 layers71.2 × 78.4 mm
Wearable Charger
Shankar141005/pcb- Size
- 71.2 × 78.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 9
- Nets
- 84
- Pads
- 143
- Tracks, vias
- 189, 18
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 7 Apr 2025
- Updated
- 7 Apr 2025
Overview
Wearable Charger is an open-source printed circuit board by Shankar141005, from the Shankar141005/pcb repository on GitHub. It is a 2-layer board of 71.2 × 78.4 mm with 9 parts on 84 nets, routed with 189 tracks and 18 vias.
It is built around the ESP32-WROOM-32, DS18B20 and MT3608, with the AMS1117-3.3 and TP4056-42-ESOP8 among its other parts. Its parts include 7 ICs, 1 resistor and 1 connector. It belongs with the power and wearables boards and the ESP32 boards of this library.
Main components
5
ESP32-WROOM-32
SMD,18x25.5mm-40℃~+85℃ -98dBm 2.4GHz 2.7V~3.6V 20dBm Bluetooth4.2 ESP32-DOWDQ6 UART、SDIO、SPI、I2C、GPIO、PWM、ADC、DAC SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
DS18B20
TO-92-55℃~+125℃ 12bit 3V~5.5V 750ms Single-bus ±0.4℃ TO-92 Temperature Sensors ROHSUMWTemperature Sensors
MT3608
SOT-23-6-40℃~+85℃ 1 1.2MHz 100uA、1.6mA 2A 2V~24V Adjustable Boost Boost Built-in No SOT-23-6 DC-DC Converters ROHS西安航天民芯DC-DC Converters
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
TP4056-42-ESOP8
ESOP-8-40℃~+85℃ 1 1A 2uA 4.2V 4V~8V Charging IC Lithium Battery Support ESOP-8 Battery Management ROHSTOPPOWERBattery Management
README
README.mdView this project on CADLAB.io.
pcb
Parts
9| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U5 |
| 1 | BQ76920PW | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U1 |
| 1 | DS18B20 | Package_TO_SOT_THT:TO-92_Inline | U7 |
| 1 | ESP32-WROOM-32 | RF_Module:ESP32-WROOM-32 | U8 |
| 1 | INA219BxDCN | Package_TO_SOT_SMD:SOT-23-8 | U6 |
| 1 | MT3608 | Package_TO_SOT_SMD:SOT-23-6 | U3 |
| 1 | R | Resistor_SMD:R_0201_0603Metric_Pad0.64x0.40mm_HandSolder | R1 |
| 1 | TP4056-42-ESOP8 | Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm_ThermalVias | U2 |
| 1 | USB_C_Plug_USB2.0 | Connector_USB:USB_C_Plug_ShenzhenJingTuoJin_918-118A2021Y40002_Vertical | P1 |
Questions
How big is the Wearable Charger PCB?
It measures 71.2 × 78.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Wearable Charger use?
9 parts, built around the ESP32-WROOM-32, DS18B20, MT3608 and AMS1117-3.3. 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 Wearable Charger KiCad files?
From the Shankar141005/pcb repository on GitHub, at the commit this page was made from: the board is Wearable Charger.kicad_pcb and its schematic Wearable Charger.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Wearable Charger design in my own project?
Its repository states no licence, so its author keeps all rights: ask Shankar141005 before reusing the design.
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