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Nex

dialgorithm·nex·KiCad/nex.kicad_pcb

Nex PCB layout, top view — open source ESP32 board by dialgorithm
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About the Nex PCB

Nex is an open source ESP32 PCB design by dialgorithm, published on GitHub. It is a 2-layer board measuring 35 × 39 mm, with 60 components from 42 distinct parts.

Its main chip is the ESP32-C3-WROOM-02-N4, from the ESP32 family. Other key parts include the DW01A, TP4056, AP2112K-3.3TRG1, DRV8833PWPR and MT3608. By type, the board carries 18 resistors, 15 capacitors, 8 ICs, 8 diodes, 4 connectors and 4 switches.

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

From the project

esp32 swarm bots

nex is a swarm robotics project built around ESP32-based bots, computer vision, AprilTags, and a custom 4-layer PCB. The goal is to have multiple small bots identify and communicate with each other while working together as a swarm.

- ESP32-WROOM in each bot for wireless communication - Luckfox Lyra Zero W for computer vision - AprilTags for identifying individual bots - Custom 4-layer PCB designed in KiCad

Nex, from the project README
From the project README

Main components on the Nex

DW01ATP4056AP2112K-3.3TRG1ESP32-C3-WROOM-02-N4DRV8833PWPRMT360874AHCT1G125W5-7STC3100IST

Nex bill of materials (BOM)

60 components, 42 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
DW01A
U1
1
TP4056
U2
1
AP2112K-3.3TRG1
U3
1
ESP32-C3-WROOM-02-N4
U4
1
DRV8833PWPR
U5
1
MT3608
U6
1
74AHCT1G125W5-7
U7
1
STC3100IST
U8
1
FS8205A
Q1
1
BATT_JST
J1
1
USB_C_Receptacle_USB2.0_14P
J2
1
MOTOR_A
J3
1
MOTOR_B
J4
1
30m
RCG1
1
SW_SPST
SW1
1
RESET
SW2
1
BOOT
SW3
1
SOC
SW4
1
SS34
D1
1
RGB1
D2
Show 22 more
QtyPartRefs
1
RGB2
D3
1
RGB3
D4
1
RGB4
D5
1
RGB5
D6
2
LED
D7, D8
1
4.7uH
L1
2
1uF
C1, C14
1
100nF
C2
1
10uF
C3
1
2.2uF
C4
1
0.01uF
C5
2
22uF
C6, C7
6
0.1uF
C8, C9, C10, C11, C12, C13
1
220nF
C15
2
5.1k
R1, R2
1
8.2k
R3
7
10k
R4, R5, R6, R7, R8, R11, R13
1
11.8k
R9
1
1.6k
R10
3
1k
R12, R14, R15
1
200k
R16
2
4.7k
R17, R18

Nex design files

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

Nex: common questions

What microcontroller does the Nex use?

The Nex is built around the ESP32-C3-WROOM-02-N4, from the ESP32 family.

How big is the Nex PCB?

The Nex measures 35 × 39 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Nex?

60 components, from 42 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Nex design files?

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

Can I use the Nex design in my own project?

The repository has no license, so all rights stay with dialgorithm. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Nex 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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