2 layers47.5 × 42 mm
STM32 UART board
PanPeople/ES100_hacking
Bird Zero Electric Scooter with ES-100 ESC | knowledge repository
34 parts2
2 layers97 × 86 mm
STM32 UART board x4
PanPeople/ES100_hacking2Bird Zero Electric Scooter with ES-100 ESC | knowledge repository
- Size
- 97 × 86 mm
- Copper layers
- 2
- Thickness
- 1.66 mm
- Parts
- 132
- Nets
- 29
- Pads
- 456
- Tracks, vias
- 848, 896
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 30 Aug 2024
- Updated
- 10 Nov 2025
Overview
STM32 UART board x4 is an open-source printed circuit board by PanPeople, from the PanPeople/ES100_hacking repository on GitHub. It is a 2-layer board of 97 × 86 mm with 132 parts on 29 nets, routed with 848 tracks and 896 vias.
It is built around the LM2574HVM-5.0, BAS70-05 and SK26. Its parts include 32 capacitors, 24 resistors, 16 ICs, 8 diodes and 8 connectors. It belongs with the interfaces and adapters boards and the STM32 boards of this library.
Main components
3
LM2574HVM-5.0
SOIC-14-300mil-40℃~+125℃@(TJ) 1 4V~60V 500mA 52kHz 5V Buck Buck Built-in Fixed No SOIC-14-300mil DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
BAS70-05
SOT-23-40℃~+125℃ 1 Pair Common Cathode 100mA 100nA@50V 1V@15mA 70V 70mA SOT-23 Schottky Diodes ROHSBORNSchottky Diodes
SK26
SMBG-55℃~+150℃ 1 Independent 100uA@60V 2A 50A 60V 850mV@2A SMBG Schottky Diodes ROHSJiangsu Changjing Electronics Technology (CJ)Schottky Diodes
README
README.mdES100 OKAI BIRD ZERO unlocking devie
Device works for only scooter with unpatched ESC firmware
Board is pin compatible with C011/C031 microcontollers. I have used the outdated step-down IC because a friend of mine gave me a bag of LM2574HVM-5 so I needed to find a usage for them :)
Parts
132| Qty | Value | Footprint | References |
|---|---|---|---|
| 20 | 100k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R3, R4, R10, R11, R12, R13, R15, R16, R17, R18, R19, R21, R22, R23, R24 +4 |
| 16 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4, H5, H6, H7, H8, H9, H10, H11, H12, H13, H14, H15, H16 |
| 12 | SolderJumper_3_Open | Jumper:SolderJumper-3_P1.3mm_Open_Pad1.0x1.5mm | JP1, JP2, JP3, JP4, JP5, JP6, JP7, JP8, JP9, JP10, JP11, JP12 |
| 8 | 100n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C9, C10, C16, C18, C24, C26, C32 |
| 8 | 22u|10V | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4, C5, C12, C13, C20, C21, C28, C29 |
| 8 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 |
| 4 | 100n|50V | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C6, C14, C22, C30 |
| 4 | 220 uF | Capacitor_SMD:CP_Elec_8x10 | C3, C11, C19, C27 |
| 4 | 22uF | Capacitor_SMD:CP_Elec_6.3x7.7 | C1, C8, C17, C25 |
| 4 | 300k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R8, R14, R20 |
| 4 | 4.7u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C7, C15, C23, C31 |
| 4 | 680 uH | Inductor_SMD:L_12x12mm_H8mm | L1, L2, L3, L4 |
| 4 | AO4612_C4748739 | easyeda2kicad:SOIC-8_L4.9-W3.9-P1.27-LS6.0-BL-2 | Q1, Q2, Q3, Q4 |
| 4 | AZ1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3, U7, U11, U15 |
| 4 | BAS70-05 | easyeda2kicad:SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR | U1, U5, U9, U13 |
| 4 | LED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2, D4, D6, D8 |
| 4 | LM2574HVM-5 | Package_SO:SOIC-14W_7.5x9mm_P1.27mm | U2, U6, U10, U14 |
| 4 | SK26 | Diode_SMD:D_SMB_Handsoldering | D1, D3, D5, D7 |
| 4 | STM32C011F6Px | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U4, U8, U12, U16 |
| 4 | SWD | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J1, J3, J5, J7 |
| 4 | Scooter | Connector_Molex:Molex_Micro-Latch_53253-0570_1x05_P2.00mm_Vertical | J2, J4, J6, J8 |
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Questions
How big is the STM32 UART board x4 PCB?
It measures 97 × 86 mm and has 2 copper layers, 1.66 mm thick.
What parts does the STM32 UART board x4 use?
132 parts, built around the LM2574HVM-5.0, BAS70-05 and SK26. 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 STM32 UART board x4 KiCad files?
From the PanPeople/ES100_hacking repository on GitHub, at the commit this page was made from: the board is STM32_UART_board/STM32_UART_board_x4.kicad_pcb and its schematic STM32_UART_board/STM32_UART_board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the STM32 UART board x4 design in my own project?
Its repository states no licence, so its author keeps all rights: ask PanPeople before reusing the design.