4 layers76.6 × 25.1 mm
4 layers27 × 43 mm
AetherLink
FBIopeningUPP/AetherLinkBattery Monitoring System
- Size
- 27 × 43 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 37
- Nets
- 64
- Pads
- 206
- Tracks, vias
- 380, 66
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 2 Jul 2026
- Updated
- 7 Jul 2026
Overview
AetherLink is an open-source printed circuit board by FBIopeningUPP, from the FBIopeningUPP/AetherLink repository on GitHub. It is a 4-layer board of 27 × 43 mm with 37 parts on 64 nets, routed with 380 tracks and 66 vias.
It is built around the ESP32-C3-WROOM-02U-N4, BQ7695202PFBR and HCZZ0520-13, with the MIC5219-3.3YM5 among its other parts. Its parts include 13 capacitors, 10 resistors, 6 ICs and 5 diodes. It belongs with the power boards and the ESP32 and RISC-V boards of this library.
Main components
4
ESP32-C3-WROOM-02U-N4
SMD-19P-40℃~+85℃ -98dBm 2.4GHz 20.5dBm 345mA 3V~3.6V 82mA Bluetooth5.0 ESP32-C3 Chip UART、SPI、I2C、I2S、JTAG、USB SMD-19P WiFi Modules ROHSEspressif SystemsWiFi Modules
BQ7695202PFBR
TQFP-48(7x7)-40℃~+85℃ 100mA 3~16 4.7V~80V 9.2uA Cell balancing、Battery temperature monitoring I2C、SPI、HDQ Lithium Battery、LiFePO4 Battery Protection IC、Balancing IC、Monitoring IC Support TQFP-48(7x7) Battery Management ROHSTexas InstrumentsBattery ManagementHCZZ0520-13
SMD,P=2.5mm,卧贴Wire To Board ConnectorHong Cheng
MIC5219-3.3YM5
SOT23-53.3V 500mA Peak Output Low Drop-Out (LDO) RegulatorMicrochip TechnologyUncategorised
README
README.mdAetherLink
AetherLink is a open-source, Upto 12-cell BMS telemetry node built around the ESP32-C3 and the Texas Instruments BQ76940 Analog Front-End (AFE). It read invidual cell voltage, it also calculates ur pack health and it transmits all the data through WebBle dashboard in your browser
Features
- Supports upto 12s lithium battery packs
- Individual cell voltage monitoring
- Pack Voltage monitoring
- Cell balancing support
- I2C communication between MCU and BQ76940
- Compact PCB Layout
- Open - source hardware and firmware
Hardware Specifications
- MCU - RP2040
- BMS Monitoring IC - BQ76940
The Architecture
The projects works on battery monitoring, where it tracks the whole battery while being plugged on the jst connector it tracks the votlage graphs and everything and it saves the data on NVS and then whenever u connect ur device to the website it processes the data and displays ur batteries information
Bill of Materials (BoM)
A complete, itemized BOM is generated by Kicad it can be viewed: Production
Steps To Reproduce
Hardware
- The parts can be sourced by providing the BoM CSV file to lcsc from where u can order the parts.
- The PCB can be ordered through JLCPCB with a stencil for precise soldering.
- Soldering can be done using low temp solder paste while using the stencil to create a perfect solder layer
Software
- Install platformio
- Open Terminal and go open the main directory
text pio run build - Firmware file will be generated and using flash tool everything will be flashed Flash Tool
Dashboard
- The dashboard can be accessed through AetherLink
- U connect ur bluetooth device to your laptop and then click connect to drone
- U can analyze ur battery and everything
RENDERS
Front
Back
USAGE OF AI
the usage of ai was done with antigravity debugging my code and help me with my pinout and everything
Parts
37| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 75 | PCM_Resistor_SMD_AKL:R_0402_1005Metric | R101, R102, R103, R104, R105 |
| 4 | 0.1uF | PCM_Capacitor_SMD_AKL:C_0402_1005Metric | C120, C122, C123, C124 |
| 3 | 100R | PCM_Resistor_SMD_AKL:R_Array_Convex_4x0402 | RN101, RN102, RN103 |
| 3 | 1uF | Capacitor_SMD:C_0402_1005Metric | C111, C112, C113 |
| 2 | 10k | PCM_Resistor_SMD_AKL:R_0402_1005Metric | R109, R110 |
| 2 | 1uF | PCM_Capacitor_SMD_AKL:C_0805_2012Metric | C118, C119 |
| 2 | 1uF | PCM_Capacitor_SMD_AKL:C_0402_1005Metric | C121, C126 |
| 2 | 4.7k | PCM_Resistor_SMD_AKL:R_0402_1005Metric | R107, R108 |
| 1 | 100R | PCM_Resistor_SMD_AKL:R_0402_1005Metric | R106 |
| 1 | 10nF | PCM_Capacitor_SMD_AKL:C_0402_1005Metric | C125 |
| 1 | 47nF | Capacitor_SMD:C_0402_1005Metric | C114 |
| 1 | BQ7695202PFBR | easyeda2kicad:TQFP-48_L7.0-W7.0-P0.50-LS9.0-TL | U101 |
| 1 | ESP32-C3-WROOM-02U | RF_Module:ESP32-C3-WROOM-02U | U107 |
| 1 | INPUT | easyeda2kicad:CONN-SMD_13P-P2.50_HCZZ0520-13 | U103 |
| 1 | LED100 | PCM_LED_SMD_AKL:LED_0603_1608Metric | LED104 |
| 1 | LED25 | PCM_LED_SMD_AKL:LED_0603_1608Metric | LED101 |
| 1 | LED50 | PCM_LED_SMD_AKL:LED_0603_1608Metric | LED102 |
| 1 | LED75 | PCM_LED_SMD_AKL:LED_0603_1608Metric | LED103 |
| 1 | MIC5219-3.3YM5 | easyeda2kicad:SOT-23-5_L3.0-W1.7-P0.95-LS2.8-TL | U102 |
| 1 | OUTPUT | easyeda2kicad:CONN-SMD_13P-P2.50_HCZZ0520-13 | U104 |
| 1 | STATUS | PCM_LED_SMD_AKL:LED_0603_1608Metric | LED105 |
| 1 | ZXTR2012P5-13 | easyeda2kicad:POWERDI-5_L5.4-W4.0-LS6.5-RD | U106 |
Questions
How big is the AetherLink PCB?
It measures 27 × 43 mm and has 4 copper layers, 1.6 mm thick.
What parts does the AetherLink use?
37 parts, built around the ESP32-C3-WROOM-02U-N4, BQ7695202PFBR, HCZZ0520-13 and MIC5219-3.3YM5. 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 AetherLink KiCad files?
From the FBIopeningUPP/AetherLink repository on GitHub, at the commit this page was made from: the board is hardware/pcb/pcb.kicad_pcb and its schematic hardware/pcb/pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the AetherLink design in my own project?
Its repository states no licence, so its author keeps all rights: ask FBIopeningUPP before reusing the design.
Similar boards
- 4 layers70 × 70 mm
CloudSmoker ver2f
cwgstreet/cloudSmoker
ESP32 wifi enabled quad temperature probe device to monitor bbq meat / pit temperatures with wireless cloud data logging for remote monitoring and push alert notifications
115 parts24 - 4 layers82 × 68.9 mm
- 4 layers45 × 23 mm
DCAN Distribution Board v1.1
abeednaz/R56-Mini-MFD
Multi function display for R56 MINI Cooper
33 parts1 - 6 layers16 × 35 mm
- 4 layers100 × 85 mm
Projected negative
hicancan/carbentra-smart-plug
CARBENTRA smart plug: AIoT edge device for campus energy orchestration
105 parts1AGPL-3.0 - 2 layers70 × 50 mm
- 2 layers
BreatheEasy
1440pQHD/One-board-Air-quality-sensor
A simple, cheap-to-build PCB that actively monitors air quality and prevents invisible hazards. It makes protection from enviromental hazards accesible to everyone.
12 parts