2 layers
JACart
JACart2/Hardware-Electronics
This repository is copied from a deprecated repository, located at https://github.com/JACart/jacartelectronics.
56 parts
2 layers152.4 × 147.3 mm
JACartCommBoard
JACart2/Hardware-ElectronicsThis repository is copied from a deprecated repository, located at https://github.com/JACart/jacartelectronics.
- Size
- 152.4 × 147.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 44
- Nets
- 66
- Pads
- 199
- Tracks, vias
- 335, 36
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 4 Feb 2025
- Updated
- 14 May 2025
Overview
JACartCommBoard is an open-source printed circuit board by JACart2, from the JACart2/Hardware-Electronics repository on GitHub. It is a 2-layer board of 152.4 × 147.3 mm with 44 parts on 66 nets, routed with 335 tracks and 36 vias.
It is built around the SFH617A-1 and L7805. Its parts include 12 connectors, 8 diodes, 6 capacitors, 6 resistors and 6 switches.
Main components
2README
README.mdJACart Hardware & Electronics Repo
This repository is copied from a deprecated repository, located at https://github.com/JACart/jacart_electronics.
** First time explorer's guide **
So you're new here. It's recommended you look through the schematics directory first. There you'll find a file named control_flow.png which will help you understand how the different pieces of the cart interact at an abstract level (current as of May-2025). Take a moment to inspect the cart to compare what you see in the diagram.
Visit the PCBFiles directory and read the README before diving into trying to understand the files found there.
Repo Contents
cart_teleop_dac:/ Updated Arduino code that utilizes DACs instead of PWM signals. This version should be the one used as of May-2025
python_teleop:/ Stand-alone python controller for teleop_board. run with python3 wasd_teleop.py locally; Not compatible with Docker setup.
libs:/ Required libraries for the Arudino code
PCBFiles:/ Directory containing PCB schematics for the JACart
schematics:/ Directory containing diagrams that show control flow and wiring in the cart.
RemoteKillSwitch:/ Contains server-side and client-side code for a remote kill switch for the cart.
jac-cart-dac-diagnostic:/ Contains Arduino code for diagnosing DACs on board the main control board.
deprecated:/ Contains outdated Arduino code
Parts
44| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | G5LE-1 | Relay_THT:Relay_SPDT_Omron-G5LE-1 | K401, K402, K403, K404, K405, K406 |
| 6 | S1GTR | JACart Parts:S1GTR | D402, D403, D404, D405, D407, D408 |
| 4 | R | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R401, R402, R403, R404 |
| 2 | 220 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R201, R202 |
| 2 | 330uF | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C203, C204 |
| 2 | Conn_01x15 | Connector_PinHeader_2.54mm:PinHeader_1x15_P2.54mm_Vertical | J201, J202 |
| 2 | LED | Diode_SMD:D_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D401, D406 |
| 2 | Q_NPN_BEC | Package_TO_SOT_THT:TO-126-3_Vertical | Q401, Q402 |
| 2 | SFH617A-1 | Package_DIP:DIP-4_W7.62mm | U401, U402 |
| 1 | 0.1uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C302 |
| 1 | 0.1uF | Capacitor_THT:C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C201 |
| 1 | 0.33uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C301 |
| 1 | 10uF | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C202 |
| 1 | Brake | JACart Parts:TE_1-406525-1 | J302 |
| 1 | Heatsink | JACart Parts:HSINK_6398BG | HS301 |
| 1 | L7805 | Package_TO_SOT_THT:TO-220-3_Vertical | U301 |
| 1 | MCP4724_2 | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J205 |
| 1 | MCP4725_1 | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J204 |
| 1 | Master Switch | JACart Parts:TE_282837-2 | J306 |
| 1 | NANO_LFT | Connector_PinSocket_2.54mm:PinSocket_1x15_P2.54mm_Vertical | J203 |
| 1 | NANO_RT | Connector_PinSocket_2.54mm:PinSocket_1x15_P2.54mm_Vertical | J206 |
| 1 | Steering | JACart Parts:TE_1-406525-1 | J303 |
| 1 | Test | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J304 |
| 1 | Throttle | JACart Parts:TE_1-406525-1 | J301 |
| 1 | Vbattery | JACart Parts:TE_282837-2 | J305 |
Questions
How big is the JACartCommBoard PCB?
It measures 152.4 × 147.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the JACartCommBoard use?
44 parts, built around the SFH617A-1 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 JACartCommBoard KiCad files?
From the JACart2/Hardware-Electronics repository on GitHub, at the commit this page was made from: the board is PCBFiles/spring_2025_PCB_files/JACartCommBoard.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the JACartCommBoard design in my own project?
Its repository states no licence, so its author keeps all rights: ask JACart2 before reusing the design.
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