2 layers81 × 62 mm
LoRaESP32
Sosenteam/LoRa-ESP32-Pager
This is a ESP-32 and SX1262 based pager, It contains full battery charging and management as well as an input keypad and encoder. It uses a 0.96" Oled (SSD1306).
61 parts
4 layers97 × 54 mm
Esp32battery
saivagishv-ctrl/ESP32-mp3playeresp32 mp3 player with battery charging and usb-c passthrough and microsd storage and headphone jack
- Size
- 97 × 54 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 45
- Nets
- 66
- Pads
- 227
- Tracks, vias
- 508, 82
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 5 Jul 2026
- Updated
- 11 Aug 2026
Overview
Esp32battery is an open-source printed circuit board by saivagishv-ctrl, from the saivagishv-ctrl/ESP32-mp3player repository on GitHub. It is a 4-layer board of 97 × 54 mm with 45 parts on 66 nets, routed with 508 tracks and 82 vias.
It is built around the ESP32-S3-WROOM-1-N8, MCP73871-2CCI/ML and PCM5102APW. Its parts include 17 capacitors, 17 resistors, 4 ICs, 4 connectors and 2 switches. It belongs with the audio and music and power boards and the ESP32 boards of this library.
Main components
3
ESP32-S3-WROOM-1-N8
SMD,25.5x18mm-40℃~+85℃ -98.2dBm 2.4GHz 20.5dBm 355mA 3V~3.6V 95mA Bluetooth5.0 ESP32-S3 Chip On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
MCP73871-2CCI/ML
QFN-20(4x4)-40℃~+85℃ 1 1.1A 28uA 4.1V~6V 4.2V Charging IC Support Support QFN-20(4x4) Battery Management ROHSMicrochip TechnologyBattery Management
PCM5102APW
TSSOP-20-25℃~+85℃ 1.8V~3.3V 2 32 384kHz 500uA 50MHz Audio Decoder Digital filtering、Power-down mode I2S TSSOP-20 ADCs/DACs - Special Purpose ROHSTexas InstrumentsADCs/DACs - Special Purpose
README
README.mdSorry its not S tier, that was an accident, this is an A tier project I think.
Note: increased price on the request is due to the power module im using being increased in price on jlcpcb for some reason (i had to use a slightly different one as the one i wanted was out os stock everywhere)
This is my first ever pcb project, I used AI to ask questions about the KiCAD ui, and to recommend me a specific model number when i gave it constraints for what i wanted in a component, like the charging module for the battery with passthrough and voltage detection
breakdown of cost: jlcpcb manufacturing total:35 dollar (so much shipping cost and no way to cancel it, not even with other companies)
parts cost on jlcpcb: 25ish dollars without shipping
This project is an mp3 player with a headphone jack, battery power, and microSD card slot, this will be used for all my music listening purposes, and for audiobooks, as im tired of having to pay 10 dollars a month, and never owning anything
Parts
45| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2, R3, R4, R9, R10, R11, R12, R13, R14, R15, R16, R17 |
| 5 | 10 uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C5, C13, C15 |
| 3 | 100 nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C6, C16, C17 |
| 2 | 0.1 uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C12, C14 |
| 2 | 2.2 nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C10, C11 |
| 2 | 2.2 uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C7, C8 |
| 2 | 470ohm | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5, R8 |
| 2 | SW_SPST | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW1, SW2 |
| 1 | 1 uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C9 |
| 1 | 1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3 |
| 1 | 2k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 47 uf | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4 |
| 1 | 5.1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R7 |
| 1 | 5.1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6 |
| 1 | AudioJack3 | Connector_Audio:Jack_3.5mm_CUI_SJ1-3533NG_Horizontal | J2 |
| 1 | ESP32-S3-WROOM-1 | PCM_Espressif:ESP32-S3-WROOM-1 | U2 |
| 1 | LT1963AxST-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3 |
| 1 | MCP73871-2CC | Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm | U1 |
| 1 | Micro_SD_Card_Det1 | Connector_Card:microSD_HC_Molex_104031-0811 | J3 |
| 1 | PCM5102A | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U4 |
| 1 | PINHD_1x14_Male | Connector_PinHeader_2.54mm:PinHeader_1x14_P2.54mm_Vertical | J16 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
| 1 | batt | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | BT1 |
Questions
How big is the Esp32battery PCB?
It measures 97 × 54 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Esp32battery use?
45 parts, built around the ESP32-S3-WROOM-1-N8, MCP73871-2CCI/ML and PCM5102APW. 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 Esp32battery KiCad files?
From the saivagishv-ctrl/ESP32-mp3player repository on GitHub, at the commit this page was made from: the board is esp32battery/esp32battery/esp32battery.kicad_pcb and its schematic esp32battery/esp32battery/esp32battery.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Esp32battery design in my own project?
Its repository states no licence, so its author keeps all rights: ask saivagishv-ctrl before reusing the design.
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