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4 layers133.1 × 126.6 mmValiant turtle-2, the printed circuit board in 3D

The Valiant Turtle 2

Size
133.1 × 126.6 mm
Copper layers
4
Thickness
1.6 mm
Parts
55
Nets
63
Pads
289
Tracks, vias
803, 74
Pours
4
Routed
Yes
KiCad
KiCad 8.0 (file 20240108)
Created
11 Dec 2024
Updated
6 Jan 2025

Overview

Valiant turtle-2 is an open-source printed circuit board by simoninns, from the simoninns/valiant-turtle-2 repository on GitHub, published under the GPL-3.0 licence. It is a 4-layer board of 133.1 × 126.6 mm with 55 parts on 63 nets, routed with 803 tracks and 74 vias.

It is built around the LM2576S-5.0, 24LC16BT-I/OT and 74HC14, with the LM1117MP-3.3 and WS2812B among its other parts. Its parts include 18 capacitors, 10 connectors, 6 resistors, 5 ICs and 5 diodes. It belongs with the RP2040 boards of this library.

Main components

5

README

README.md

Valiant Turtle 2

The Valiant Turtle 2 is a modern re-creation of the Valiant Turtle robot from the 1980s. The project is fully open-hardware and open-software and is designed to be 3D printed and constructed from widely available parts.

Valiant Turtle 2

Please see the project Wiki for details of the project and for access to the project documentation.

Project status

This project is at first release. Please read the wiki and see YouTube for consruction videos (detailed in the wiki also).

Author

Valiant Turtle 2 is designed and maintained by Simon Inns.

Software License (GPLv3)

text
Valiant Turtle 2 is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

Valiant Turtle 2 is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

Hardware License (Creative Commons BY-SA 4.0)

Please see the following link for details: https://creativecommons.org/licenses/by-sa/4.0/

You are free to:

Share - copy and redistribute the material in any medium or format Adapt - remix, transform, and build upon the material for any purpose, even commercially.

This license is acceptable for Free Cultural Works.

The licensor cannot revoke these freedoms as long as you follow the license terms.

Under the following terms:

Attribution - You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.

ShareAlike - If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.

No additional restrictions - You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.

Parts

55
QtyValueFootprintReferences
10100nFCapacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolderC1, C2, C4, C7, C11, C14, C15, C16, C17, C18
4100uFCapacitor_SMD:CP_Elec_8x6.2C3, C5, C6, C8
410KResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR1, R2, R3, R4
4Aux_MountingHoleMountingHole:MountingHole_3.2mm_M3H4, H5, H6, H7
3Body_MountingHoleMountingHole:MountingHole_3.2mm_M3H1, H2, H3
3WS2812BLED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mmD3, D4, D5
210uF TantCapacitor_Tantalum_SMD:CP_EIA-3528-21_Kemet-B_Pad1.50x2.35mm_HandSolderC12, C13
2DRV8825_BreakoutModule:Pololu_Breakout-16_15.2x20.3mmA2, A3
11000uFCapacitor_SMD:CP_Elec_10x10.5C9
1100uH 3ABourns_Inductor:Inductor_SDR1307L1
11KResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR5
11uFCapacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolderC10
124LC16BT-I/OTPackage_TO_SOT_SMD:SOT-23-5U1
1560RResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR6
174HC14Package_SO:SO-14_3.9x8.65mm_P1.27mmU5
1BatteryConnector_JST:JST_XH_B5B-XH-A_1x05_P2.50mm_VerticalJ9
1Exp. HeaderConnector_PinHeader_2.54mm:PinHeader_1x09_P2.54mm_VerticalJ4
1EyesConnector_JST:JST_XH_B3B-XH-A_1x03_P2.50mm_VerticalJ10
1INA260Package_SO:TSSOP-16_4.4x5mm_P0.65mmU3
1LM1117MP-3.3Package_TO_SOT_SMD:SOT-223-3_TabPin2U4
1LM2576S-5Package_TO_SOT_SMD:TO-263-5_TabPin3U2
1Left MotorConnector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_VerticalJ7
1Pen Servo HeaderConnector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_VerticalJ5
1Power ExpansionConnector_JST:JST_XH_B6B-XH-A_1x06_P2.50mm_VerticalJ6
1Power LEDLED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolderD2
1Qwiic0 (NF)Connector_JST:JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_HorizontalJ1
1Qwiic1Connector_JST:JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_HorizontalJ3
1RaspberryPi_Pico_WModule_RaspberryPi_Pico:RaspberryPi_Pico_CommonA1
1Right MotorConnector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_VerticalJ8
1SS34 3ADiode_SMD:D_SMC_HandsolderingD1
1USART HeaderConnector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_VerticalJ2

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Questions

How big is the Valiant turtle-2 PCB?

It measures 133.1 × 126.6 mm and has 4 copper layers, 1.6 mm thick.

What parts does the Valiant turtle-2 use?

55 parts, built around the LM2576S-5.0, 24LC16BT-I/OT, 74HC14 and LM1117MP-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 Valiant turtle-2 KiCad files?

From the simoninns/valiant-turtle-2 repository on GitHub, at the commit this page was made from: the board is kicad/robot/mainboard/valiant-turtle-2.kicad_pcb and its schematic kicad/acorn_userport_adapter/parallel_adapter.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Valiant turtle-2 design in my own project?

Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).