HardLabs

Battlebot

shobhitsinha04·battlebot·hardware/battlebot.kicad_pcb

Battlebot PCB layout, top view — open source ESP32 board by shobhitsinha04

About the Battlebot PCB

Battlebot is an open source ESP32 PCB design by shobhitsinha04, published on GitHub. It is a 2-layer board measuring 101.6 × 76.2 mm, with 69 components from 38 distinct parts.

Its main chip is the ESP32-C3-WROOM-02, from the ESP32 family. Other key parts include the DRV8871DDA, LMR51430 and MCF8316A1VRGFR. By type, the board carries 24 resistors, 21 capacitors, 7 diodes, 6 connectors, 5 ICs and 2 transistors.

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

From the project

2 lb combat robot with custom ESP32 PCB, ECE 445 UIUC

A 2 lb antweight combat robot built for ECE 445 (Senior Design) at the University of Illinois Urbana-Champaign, Spring 2026. It runs on a custom ESP32 control PCB, drives two wheels plus a brushless spinning weapon, and is controlled wirelessly from an Xbox controller.

- Control ESP32 firmware receives drive and weapon commands over BLE. A Python host script maps Xbox controller input to left/right motor PWM with deadzone, inversion and range limiting. - Power 4S LiPo feeding a protected power path (switch, TVS diode) and a buck converter to a stable 3.3 V logic rail. - Actuation Two brushed…

Battlebot, from the project README
From the project README

Main components on the Battlebot

DRV8871DDALMR51430ESP32-C3-WROOM-02MCF8316A1VRGFR

Battlebot bill of materials (BOM)

69 components, 38 distinct parts.

QtyPartRefs
2
DRV8871DDA
U1, U2
1
LMR51430
U3
1
ESP32-C3-WROOM-02
U4
1
MCF8316A1VRGFR
U5
2
2N3904
Q1, Q2
1
MOTOR1
J1
1
MOTOR2
J2
1
USB_C_Receptacle_USB2.0_16P
J3
1
WMOTOR
J4
1
BATT
J5
1
UART
J6
1
RESET
RST1
1
GPIO8
RST2
1
SW_SPDT
SW2
1
WMOTOR_FAULT
D1
1
WMOTOR_SPEED
D2
1
DEBUG
D3
1
3V3
D4
1
VMUX
D5
1
1.5SMCxxA
D6
Show 18 more
QtyPartRefs
1
5V
D7
1
5.6uH
L1
6
0.1uF
C1, C3, C7, C10, C12, C13
2
47uF
C2, C4
2
22uF
C5, C6
2
2.2uF
C8, C20
1
.1uF
C9
1
10uF
C11
4
1uF
C14, C15, C16, C18
1
47nF
C17
2
10uF
C19, C21
4
32k
R1, R2, R19, R23
1
100k
R3
1
22.1k
R4
9
10k
R5, R9, R10, R11, R17, R18, R20, R21 +1
3
5.1k
R6, R7, R16
1
22
R8
5
1k
R12, R13, R14, R15, R24

Battlebot design files

The KiCad project lives in the shobhitsinha04/battlebot repository on GitHub; these links point at the commit this page was built from.

Battlebot: common questions

What microcontroller does the Battlebot use?

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

How big is the Battlebot PCB?

The Battlebot measures 101.6 × 76.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Battlebot?

69 components, from 38 distinct parts. The full bill of materials is listed on this page.

Where can I download the Battlebot design files?

From the shobhitsinha04/battlebot repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Battlebot design in my own project?

The repository has no license, so all rights stay with shobhitsinha04. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Battlebot 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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