HardLabs

Sigmabot

berndporr·sigmabot

Sigmabot PCB layout, top view — open source Raspberry Pi board by berndporr

About the Sigmabot PCB

Sigmabot is an open source Raspberry Pi PCB design by berndporr, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 223 × 111 mm, with 10 components from 10 distinct parts.

Its main chip is the Raspberry_Pi_2_3, from the Raspberry Pi family. Other key parts include the BUCK_CONV. By type, the board carries 4 connectors, 1 IC, 1 fuse, 1 switch, 1 diode and 1 resistor.

It belongs with the robotics & motion and power & battery designs in this gallery.

From the project

Robot with linear servos and LIDAR

RPLIDAR A1M8 is a 360degree omnidirectional laser scanner, based on the triangulation ranging technique that emits modulated laser signal in the near-infrared (NIR) light band (typ. 785nm) and this signal is then reflected by a detected object.

In this project the UART communication interface was used to transmit LiDAR data to the RaspberryPi rather than the alternatively provided USB, due to the comparative simplicity of the communication protocol and the transmitted data packets, which in turn ensures a quicker data transmission. The LiDAR’s motor is powered directly from the battery…

Sigmabot, from the project README
From the project README

Main components on the Sigmabot

BUCK_CONV

Sigmabot bill of materials (BOM)

10 components, 10 distinct parts.

QtyPartRefs
1
BUCK_CONV
U1
1
Conn_01x02
J1
1
Conn_01x07
J2
1
MOTOR_L
J3
1
MOTOR_R
J4
1
Fuse
F1
1
Raspberry_Pi_2_3
RP1
1
SW_DPDT_x2
SW1
1
LED
D1
1
510R
R1

Sigmabot design files

The KiCad project lives in the berndporr/sigmabot repository on GitHub; these links point at the commit this page was built from.

Sigmabot: common questions

What microcontroller does the Sigmabot use?

The Sigmabot is built around the Raspberry_Pi_2_3, from the Raspberry Pi family.

How big is the Sigmabot PCB?

The Sigmabot measures 223 × 111 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Sigmabot?

10 components, from 10 distinct parts. The full bill of materials is listed on this page.

Where can I download the Sigmabot design files?

From the berndporr/sigmabot repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Sigmabot design in my own project?

Yes, under the terms of its GPL-3.0 license, which berndporr chose for the repository.

Can I test firmware for the Sigmabot without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Raspberry Pi firmware against it before you order a PCB.

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