2 layers56.8 × 66.2 mm
2 layers56.8 × 66.2 mm
Hackapet v4
acornitum/hackapet-v4wip, hackapet pcb v4
- Size
- 56.8 × 66.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 51
- Nets
- 63
- Pads
- 248
- Tracks, vias
- 581, 151
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 8 Jan 2026
- Updated
- 26 Jan 2026
Overview
Hackapet v4 is an open-source printed circuit board by acornitum, from the acornitum/hackapet-v4 repository on GitHub. It is a 2-layer board of 56.8 × 66.2 mm with 51 parts on 63 nets, routed with 581 tracks and 151 vias.
It is built around the ESP32-S2-MINI-2-N4, BQ24075RGT and SRV05-4. Its parts include 14 resistors, 9 capacitors, 5 ICs, 5 diodes and 4 connectors. It belongs with the ESP32 boards of this library.
Main components
3
ESP32-S2-MINI-2-N4
SMD-40℃~+105℃ -97dBm 19.5dBm 2.4GHz 310mA 3V~3.6V 63mA ESP32-S2FH4 Chip On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD WiFi Modules ROHSEspressif SystemsWiFi Modules
BQ24075RGT
QFN-16-EP(3x3)-40℃~+125℃ 1.5A 4.2V 4.35V~6.4V 6.5uA Charging IC Lithium Battery Not supported Support QFN-16-EP(3x3) Battery Management ROHSTexas InstrumentsBattery Management
SRV05-4
SOT-23-6L-55℃~+150℃ 15V 1pF 4A 5V 5uA 6V 80W ESD Four channels IEC 61000-4-2、IEC 61000-4-5 Unidirectional SOT-23-6L ESD and Surge Protection (TVS/ESD) ROHShongjiachengESD And Surge Protection (TVS/ESD)
README
README.mdhackapet pcb, v4
this is a wip!! it is not done yet
Parts
51| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | LED | LED_SMD:LED_0805_2012Metric | D1, D3, D4, D5, D7 |
| 4 | 1K | Resistor_SMD:R_0805_2012Metric | R1, R2, R3, R6 |
| 4 | 1uF | Capacitor_SMD:C_0805_2012Metric | C2, C5, C6, C9 |
| 3 | 10k | Resistor_SMD:R_0805_2012Metric | R7, R9, R14 |
| 3 | 4u7 | Capacitor_SMD:C_0805_2012Metric | C3, C7, C8 |
| 3 | SW_Push | Button_Switch_SMD:SW_Push_1P1T_NO_6x6mm_H9.5mm | SW1, SW2, SW3 |
| 2 | 1k5 | Resistor_SMD:R_0805_2012Metric | R8, R11 |
| 2 | 5.1k | Resistor_SMD:R_0805_2012Metric | R4, R5 |
| 2 | SW_Push | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | BOOT1, RESET1 |
| 1 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C4 |
| 1 | 100R | Resistor_SMD:R_0805_2012Metric | R13 |
| 1 | 100k | Resistor_SMD:R_0805_2012Metric | R15 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q2 |
| 1 | 3k9 | Resistor_SMD:R_0805_2012Metric | R12 |
| 1 | BQ24075RGT | Package_DFN_QFN:VQFN-16-1EP_3x3mm_P0.5mm_EP1.6x1.6mm | U4 |
| 1 | Conn_01x02_Socket | Jumper:SolderJumper-2_P1.3mm_Open_Pad1.0x1.5mm | J1 |
| 1 | Conn_01x07_Socket | Connector_PinSocket_2.54mm:PinSocket_1x07_P2.54mm_Vertical | DISPLAY_SSD1351 |
| 1 | Conn_02x06_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x06_P2.54mm_Vertical | BREAKOUT_PINS1 |
| 1 | ESP-PSRAM32 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | ESP32-S2-MINI-2 | ESP32-S2-MINI-1:XCVR_ESP32-S2-MINI-1 | U3 |
| 1 | SRV05-4 | Package_TO_SOT_SMD:SOT-23-6 | U11 |
| 1 | SW_SPDT | Button_Switch_SMD:SW_DPDT_CK_JS202011JCQN | SW4 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_HCTL_HC-TYPE-C-16P-01A | J4 |
| 1 | XC6206PxxxMR | Package_TO_SOT_SMD:SOT-23-3 | U1 |
| 1 | breakout | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical_SMD_Pin1Left | J2 |
| 1 | lipo | Connector_JST:JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | J7 |
The 46 most common of 51 parts.
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Questions
How big is the Hackapet v4 PCB?
It measures 56.8 × 66.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hackapet v4 use?
51 parts, built around the ESP32-S2-MINI-2-N4, BQ24075RGT and SRV05-4. 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 Hackapet v4 KiCad files?
From the acornitum/hackapet-v4 repository on GitHub, at the commit this page was made from: the board is hackapet_v4.kicad_pcb and its schematic hackapet_v2-backups/hackapet_v2-2025-03-05_183351 2/hackapet_v4.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Hackapet v4 design in my own project?
Its repository states no licence, so its author keeps all rights: ask acornitum before reusing the design.