2 layers14 × 11.4 mm
4 layers32 × 35 mm
BatMon
frenchbakery/batmon- Size
- 32 × 35 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 38
- Nets
- 60
- Pads
- 175
- Tracks, vias
- 244, 26
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 15 Apr 2023
- Updated
- 11 Jul 2023
Overview
BatMon is an open-source printed circuit board by frenchbakery, from the frenchbakery/batmon repository on GitHub. It is a 4-layer board of 32 × 35 mm with 38 parts on 60 nets, routed with 244 tracks and 26 vias.
It is built around the ESP32-WROOM-32D, LM2904 and SS8050-G. Its parts include 14 resistors, 6 capacitors, 5 diodes, 5 transistors and 3 ICs. It belongs with the ESP32 boards of this library.
Main components
3
ESP32-WROOM-32D
-- WiFi Modules ROHSEspressif SystemsWiFi Modules
LM2904
SOP-8-15V~-1.5V、1.5V~15V 0℃~+70℃ 1MHz 2 2mV 3V~30V 3nA 40mA 45nA 500uA 85dB SOP-8 Operational Amplifier ROHSGOODWORKOperational Amplifier
SS8050-G
SOT-231 NPN 1.5A 100 100MHz 100nA 25V 300mW 400mV 5V NPN SOT-23 Bipolar (BJT) ROHSComchipBipolar (BJT)
Parts
38| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R4, R6, R10, R12, R13, R14 |
| 4 | 330 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R5, R7, R8 |
| 3 | 100n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3, C4, C5 |
| 3 | 22µ | Capacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-A_Pad1.58x1.35mm_HandSolder | C1, C2, C6 |
| 3 | SS8050-G | Package_TO_SOT_SMD:SOT-23 | Q3, Q4, Q5 |
| 2 | 30k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R11 |
| 2 | D_Zener_ANK | Package_TO_SOT_SMD:TSOT-23 | D1, D2 |
| 2 | Q_PMOS_DDGSDD_TSOP-6 | Package_SO:TSOP-6_1.65x3.05mm_P0.95mm | Q1, Q2 |
| 1 | 20k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R9 |
| 1 | AZ1117CR-3.3 | Package_TO_SOT_SMD:SOT-89-3_Handsoldering | U4 |
| 1 | Battery_Connector | Connector_JST:JST_XH_S3B-XH-A_1x03_P2.50mm_Horizontal | J1 |
| 1 | Buzzer | Buzzer_Beeper:MagneticBuzzer_CUI_CMT-8504-100-SMT | BZ1 |
| 1 | Charging_Connector | ELEKTRON_Footprints:Conn_Edge_1x6_LLSSSS_Mirrored | J5 |
| 1 | D_Schottky | Diode_SMD:D_SOD-123 | D3 |
| 1 | ESP32-WROOM-32D | RF_Module:ESP32-WROOM-32D | U1 |
| 1 | LED | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D4 |
| 1 | LM2904 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | POWER_SW | ELEKTRON_Footprints:SW_DPDT_Nidec_CL-SB-22A-1x | SW1 |
| 1 | Prog_Connector | ELEKTRON_Footprints:Dbg_Port_1x6_P1.27mm_ThroughHole | J3 |
| 1 | ~ | ELEKTRON_Footprints:D_TVS_Quad_Array_1206 | D5 |
Questions
How big is the BatMon PCB?
It measures 32 × 35 mm and has 4 copper layers, 1.6 mm thick.
What parts does the BatMon use?
38 parts, built around the ESP32-WROOM-32D, LM2904 and SS8050-G. 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 BatMon KiCad files?
From the frenchbakery/batmon repository on GitHub, at the commit this page was made from: the board is hardware/esp32version/BatMon.kicad_pcb and its schematic hardware/batmon_simple_pcb/batmon_simple_pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the BatMon design in my own project?
Its repository states no licence, so its author keeps all rights: ask frenchbakery before reusing the design.
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