HardLabs

Tobor

evezor·tobor_v00·cad/v0/tobor.kicad_pcb

Tobor PCB layout, top view — open source ESP32 board by evezor

About the Tobor PCB

Tobor is an open source ESP32 PCB design by evezor, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 263.5 × 63.5 mm, with 122 components from 40 distinct parts.

Its main chip is the ESP32-WROVER-I, from the ESP32 family. Other key parts include the ESP32-WROOM-32U, XL1509, AMS1117-3.3, Trans_CAN_SN65HVD230DR and DRV8825PWPR. By type, the board carries 46 capacitors, 27 resistors, 15 connectors, 12 diodes, 7 ICs and 4 switches.

It belongs with the robotics & motion and iot & wireless designs in this gallery.

From the project

Tobor (robot spelled backwards), was built to be the most versatile open-source robotics system

Find out more about this project, additional source files will be released here

ESP32 microcontroller with 4 MB SPIRAM Runs Micropython 3 DRV8825 stepper motor drivers 2 AS5048B 14-bit absolute encoders Allows for low/no motion homing Collaborative programming 8 position addressable LED ring Can be used to display states of motors or the machine External stepper driver and peripheral port CNC controller powered by Fluid NC with dedicated FTDI and reset switch Micro-SD card slot WiFi enabled CANbus Edge Board Interface Servo header 24 VDC power input 1 user programmable tactile button Reset…

Tobor, from the project README
From the project README

Main components on the Tobor

ESP32-WROOM-32UXL1509AMS1117-3.3Trans_CAN_SN65HVD230DRDRV8825PWPRESP32-WROVER-I

Tobor bill of materials (BOM)

122 components, 40 distinct parts.

QtyPartRefs
1
ESP32-WROOM-32U
U101
1
XL1509
U102
1
AMS1117-3.3
U103
1
Trans_CAN_SN65HVD230DR
U104
3
DRV8825PWPR
U201, U301, U401
1
ESP32-WROVER-I
A101
2
ftdi_conn
J101, J112
1
Conn_01x03
J102
1
Conn_01x02
J103
1
Conn_01x03
J104
1
fan
J105
1
Conn_01x03
J106
2
Conn_01x04_MountingPin
J107, J109
1
Conn_02x05_Odd_Even
J108
1
Micro_SD_Card_Det
J110
1
Conn_01x04
J111
3
Conn_01x04_MountingPin
J201, J301, J401
2
SolderJumper_2_Bridged
JP101, JP102
1
can_jumper
JP103
3
10k POT
RV201, RV301, RV401
Show 20 more
QtyPartRefs
4
SW_Push
SW101, SW102, SW103, SW104
3
TestPoint
TP201, TP301, TP401
9
SK6812MINI
D101, D102, D103, D104, D105, D106, D107, D108 +1
1
SX35_SCHOTTKY
D109
1
D_TVS_x2_AAC
D110
1
led_g
D111
1
68uF
L101
9
22uF
C101, C102, C103, C114, C116, C117, C119, C121 +1
12
.1uF
C104, C105, C106, C107, C108, C109, C110, C111 +4
2
220uF
C112, C115
5
4.7uF 50V
C113, C118, C203, C305, C405
3
47uF
C201, C304, C404
3
10 nF
C202, C301, C401
9
.1uF 100V
C204, C205, C207, C303, C306, C307, C403, C406 +1
3
0.47uF
C206, C302, C402
14
10k
R101, R103, R104, R107, R108, R109, R111, R112 +6
3
4.7k
R102, R105, R106
1
120R
R110
3
1.5k
R201, R301, R401
6
0.1R
R204, R205, R304, R305, R404, R405

Tobor design files

The KiCad project lives in the evezor/tobor_v00 repository on GitHub; these links point at the commit this page was built from.

Tobor: common questions

What microcontroller does the Tobor use?

The Tobor is built around the ESP32-WROVER-I, from the ESP32 family.

How big is the Tobor PCB?

The Tobor measures 263.5 × 63.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Tobor?

122 components, from 40 distinct parts. The full bill of materials is listed on this page.

Where can I download the Tobor design files?

From the evezor/tobor_v00 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Tobor design in my own project?

Yes, under the terms of its CERN-OHL-P-2.0 license, which evezor chose for the repository.

Can I test firmware for the Tobor without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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