

This is the official repository for the autonomous golf cart project at MVTHS
- Size
- 108 × 80 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 45
- Nets
- 64
- Pads
- 188
- Tracks, vias
- 736, 37
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 8 Nov 2023
- Updated
- 4 Jun 2024
Overview
Bridge is an open-source printed circuit board by Roman-Rice-Engineering, from the Roman-Rice-Engineering/auto-golf-cart repository on GitHub, published under the MIT licence. It is a 2-layer board of 108 × 80 mm with 45 parts on 64 nets, routed with 736 tracks and 37 vias.
It is built around the ATMEGA328P-PU, MCP4901-E/P and J104D2C12VDC.20S, with the L7805 among its other parts. Its parts include 12 resistors, 9 diodes, 9 connectors, 5 capacitors and 5 ICs. It belongs with the interfaces and adapters boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
4ATMEGA328P-PU
DIP-28-300mil-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH DIP-28-300mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)MCP4901-E/P
PDIP-8-40℃~+125℃ 1 1LSB 2.7V~5.5V 4.5us 8 Power-on reset、Power-down mode、Programmable gain SPI PDIP-8 Digital to Analog Converters (DAC) ROHSMicrochip TechnologyDigital To Analog Converters (DAC)J104D2C12VDC.20S
DIP-8DIP-8 Signal Relays ROHSCIT Relay and SwitchSignal RelaysL7805
TO-220ST0℃~+125℃@(Tj) 1 1.2A 20V 2V@(1A) 42uV 500uA 5V 73dB@(120Hz) Fixed Positive Short Circuit Protection TO-220ST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSOSENVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
Parts
45| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 10k | bridge:THT_RESISTOR_WITH_VALUE | R1, R2, R3, R4, R6, R7, R13 |
| 5 | 1u | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C1, C2, C3, C5, C6 |
| 5 | SW_SPST | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | SW1, SW2, SW3, SW4, SW5 |
| 4 | YELLOW | LED_THT:LED_D5.0mm | D1, D6, D7, D8 |
| 3 | 47k | bridge:THT_RESISTOR_WITH_VALUE | R5, R9, R11 |
| 3 | RED | LED_THT:LED_D5.0mm | D3, D4, D5 |
| 3 | Screw_Terminal_01x06 | bridge:TE_2-1437667-9 | J1, J2, J3 |
| 2 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J6, J8 |
| 1 | 100k | bridge:THT_RESISTOR_WITH_VALUE | R12 |
| 1 | 5k | bridge:THT_RESISTOR_WITH_VALUE | R8 |
| 1 | ATmega328P-P | Package_DIP:DIP-28_W7.62mm | U4 |
| 1 | BLUE | LED_THT:LED_D5.0mm | D2 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J7 |
| 1 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J5 |
| 1 | Conn_01x23 | Connector_TE-Connectivity:TE_AMPSEAL_1-776087-x_3Rows_23_P0.4mm_Horizontal | J4 |
| 1 | GREEN | LED_THT:LED_D5.0mm | D9 |
| 1 | J104D2C12VDC.20S | bridge:RELAY8_J104D2C12VDC.20S_CRS | U2 |
| 1 | L293 | Package_DIP:DIP-16_W7.62mm | U1 |
| 1 | L7805 | Package_TO_SOT_THT:TO-220-3_Horizontal_TabDown | U5 |
| 1 | MCP4901 | Package_DIP:DIP-8_W7.62mm | U6 |
| 1 | MCU_Test_Point | Connector_PinHeader_2.54mm:PinHeader_2x04_P2.54mm_Vertical | J9 |
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Questions
How big is the Bridge PCB?
It measures 108 × 80 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Bridge use?
45 parts, built around the ATMEGA328P-PU, MCP4901-E/P, J104D2C12VDC.20S and L7805. 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 Bridge KiCad files?
From the Roman-Rice-Engineering/auto-golf-cart repository on GitHub, at the commit this page was made from: the board is bridge/pcb/bridge/bridge.kicad_pcb and its schematic bridge/pcb/bridge/bridge.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Bridge design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).