2 layers
2 layers85.1 × 55.9 mm
Projecting
DoloresAx/ROM_PCBROM_PCB_Microcontroller
- Size
- 85.1 × 55.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 82
- Nets
- 95
- Pads
- 352
- Tracks, vias
- 1,113, 137
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 19 Aug 2025
- Updated
- 19 Aug 2025
Overview
Projecting is an open-source printed circuit board by DoloresAx, from the DoloresAx/ROM_PCB repository on GitHub. It is a 2-layer board of 85.1 × 55.9 mm with 82 parts on 95 nets, routed with 1,113 tracks and 137 vias.
It is built around the FT232RL, LM2596S-5.0 and AMS1117-3.3. Its parts include 25 capacitors, 22 resistors, 12 connectors, 7 ICs and 7 diodes. It belongs with the STM32 boards of this library.
Main components
3
FT232RL
SSOP-28-208mil-40℃~+85℃ 3.3V~5.25V、4V~5.25V USB 2.0 USB to UART SSOP-28-208mil USB Converters ROHSFTDIUSB Converters
LM2596S-5.0
TO-263-5-40℃~+125℃@(TJ) 1 150kHz 3A 4.5V~40V 5V 5mA Buck Buck Built-in Fixed No TO-263-5 DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdROM_PCB
Parts
82| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | 100nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C4, C7, C10, C11, C12, C13, C14, C15, C20, C21, C24, C25, C26, C27, C29 +2 |
| 14 | 10K | Resistor_SMD:R_0603_1608Metric | R1, R3, R4, R6, R7, R9, R10, R11, R12, R15, R16, R19, R20, R23 |
| 5 | 470 | Resistor_SMD:R_0603_1608Metric | R2, R5, R8, R13, R14 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_DIN965 | H1, H2, H3, H4 |
| 3 | Orange | LED_SMD:LED_0603_1608Metric | D4, D5, D6 |
| 2 | 22pF | Capacitor_SMD:C_0201_0603Metric | C2, C3 |
| 2 | D | Diode_SMD:D_SMB | D3, D7 |
| 2 | SW_Push | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW1, SW2 |
| 2 | TB6612FNG | Package_SO:SSOP-24_5.3x8.2mm_P0.65mm | U1, U5 |
| 2 | UART SERIAL | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3, J4 |
| 1 | 1000uF 25V | Capacitor_SMD:CP_Elec_10x12.6 | C5 |
| 1 | 1000uF 6.3V | Capacitor_SMD:CP_Elec_6.3x9.9 | C23 |
| 1 | 100K | Resistor_SMD:R_0603_1608Metric | R18 |
| 1 | 10uF | Capacitor_SMD:C_0201_0603Metric_Pad0.64x0.40mm_HandSolder | C19 |
| 1 | 1nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C17 |
| 1 | 20K | Resistor_SMD:R_0603_1608Metric | R22 |
| 1 | 300K | Resistor_SMD:R_0603_1608Metric | R17 |
| 1 | 470uF 25V | Capacitor_SMD:CP_Elec_10x12.6 | C18 |
| 1 | 47uH | Inductor_SMD:L_Neosid_SM-PIC0612H | L1 |
| 1 | 8Mhz | Crystal:Crystal_HC49-U_Vertical | Y1 |
| 1 | ACS712xLCTR-20A | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U4 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U6 |
| 1 | Conn_01x02_Socket | Connector_Phoenix_MC_HighVoltage:PhoenixContact_MC_1,5_2-G-5.08_1x02_P5.08mm_Horizontal | J1 |
| 1 | Conn_01x08_Pin | Connector_Molex:Molex_SPOX_5268-08A_1x08_P2.50mm_Horizontal | J6 |
| 1 | FT232RL | Package_SO:SSOP-28_5.3x10.2mm_P0.65mm | U7 |
| 1 | Green | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | Input | Connector_BarrelJack:BarrelJack_Kycon_KLDX-0202-xC_Horizontal | J2 |
| 1 | LM2596S-5 | Package_TO_SOT_SMD:TO-263-5_TabPin3 | U3 |
| 1 | MotorA | Connector_Molex:Molex_SPOX_5268-06A_1x06_P2.50mm_Horizontal | J10 |
| 1 | MotorB | Connector_Molex:Molex_SPOX_5268-06A_1x06_P2.50mm_Horizontal | J5 |
| 1 | MotorC | Connector_Molex:Molex_SPOX_5268-06A_1x06_P2.50mm_Horizontal | J7 |
| 1 | MotorD | Connector_Molex:Molex_SPOX_5268-06A_1x06_P2.50mm_Horizontal | J9 |
| 1 | POWER | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J12 |
| 1 | Red | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | STM32F103RCTx | Package_QFP:LQFP-64_10x10mm_P0.5mm | U2 |
| 1 | Serial Debug | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J8 |
| 1 | USB_B | Connector_USB:USB_B_Lumberg_2411_02_Horizontal | J11 |
| 1 | on/off | Button_Switch_THT:SW_Slide_SPDT_Straight_CK_OS102011MS2Q | SW3 |
Questions
How big is the Projecting PCB?
It measures 85.1 × 55.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Projecting use?
82 parts, built around the FT232RL, LM2596S-5.0 and AMS1117-3.3. 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 Projecting KiCad files?
From the DoloresAx/ROM_PCB repository on GitHub, at the commit this page was made from: the board is project/projecting.kicad_pcb and its schematic project/projecting.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Projecting design in my own project?
Its repository states no licence, so its author keeps all rights: ask DoloresAx before reusing the design.
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