2 layers77.8 × 84.6 mm
2 layers65 × 56 mm
LARA hat
LuHer10/LARA1LARA: Low-cost Assistive Robot Arm
- Size
- 65 × 56 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 33
- Nets
- 52
- Pads
- 140
- Tracks, vias
- 291, 19
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 8 Jun 2025
- Updated
- 20 Oct 2026
Overview
LARA hat is an open-source printed circuit board by LuHer10, from the LuHer10/LARA repository on GitHub. It is a 2-layer board of 65 × 56 mm with 33 parts on 52 nets, routed with 291 tracks and 19 vias.
It is built around the 74LVC2G241GS and SN65HVD230D. Its parts include 10 resistors, 7 connectors, 5 diodes, 4 capacitors and 4 ICs.
Main components
2
74LVC2G241GS
XSON-8(1x1.4)-40℃~+125℃ 1 1.65V~5.5V 2 2.6ns@3.3V,50pF 32mA 32mA 4uA 74LVC Power-off isolation、Output enable、Level shifting Schmitt trigger Tri-State Unidirectional XSON-8(1x1.4) Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffers, Drivers, Receivers, Transceivers
SN65HVD230D
SOIC-8-40℃~+85℃ 1 17mA 1Mbps 370uA 3V~3.6V CAN Transceiver Low-power mode、Wake-up function、ESD protection、Thermal shutdown protection、Bus fault protection、Hot-swap protection SOIC-8 CAN Transceivers ROHSTexas InstrumentsCAN Transceivers
README
README.mdLARA (Low-cost Assistive Robot Arm)
Repositorio Trabajo Fin de Grado
Parts
33| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 68 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6, R7, R8, R9, R10 |
| 4 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4 |
| 2 | 22p | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2 |
| 2 | LOGO | LOGO | G***, G*** |
| 1 | 0.1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3 |
| 1 | 120 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5 |
| 1 | 12V in | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm | J5 |
| 1 | 1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4 |
| 1 | 74LVC2G241 | Package_SO:VSSOP-8_3x3mm_P0.65mm | U3 |
| 1 | 8MHz | Crystal:Crystal_HC49-4H_Vertical | Y1 |
| 1 | Buck 12V - 5V | components:BUCK12-5 | U4 |
| 1 | Conn_01x02_Pin | Connector_JST:JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | J4 |
| 1 | Conn_Dynamixel | Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | J3 |
| 1 | Conn_RoboClaw | Connector_JST:JST_PH_B3B-PH-K_1x03_P2.00mm_Vertical | J2 |
| 1 | I2C_JST | Connector_JST:JST_PH_B4B-PH-K_1x04_P2.00mm_Vertical | J7 |
| 1 | LED_JST | Connector_JST:JST_PH_B4B-PH-K_1x04_P2.00mm_Vertical | J6 |
| 1 | MCP2515-xSO | Package_SO:SOIC-18W_7.5x11.6mm_P1.27mm | U1 |
| 1 | Raspberry_Pi_4 | Connector_PinHeader_2.54mm:PinHeader_2x20_P2.54mm_Vertical | J1 |
| 1 | Rx_LED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1 |
| 1 | S0 | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D3 |
| 1 | S1 | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D4 |
| 1 | S2 | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D5 |
| 1 | SN65HVD230 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | Tx_LED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2 |
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Questions
How big is the LARA hat PCB?
It measures 65 × 56 mm and has 2 copper layers, 1.6 mm thick.
What parts does the LARA hat use?
33 parts, built around the 74LVC2G241GS and SN65HVD230D. 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 LARA hat KiCad files?
From the LuHer10/LARA repository on GitHub, at the commit this page was made from: the board is pcb/LARA_hat/LARA_hat.kicad_pcb and its schematic pcb/LARA_hat/LARA_hat.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LARA hat design in my own project?
Its repository states no licence, so its author keeps all rights: ask LuHer10 before reusing the design.