HardLabs

HOLY ESC

0BAB1·HOLY_ESC·hardware/ESC_PCB_REVC/HOLY_ESC.kicad_pcb

HOLY ESC PCB layout, top view — open source STM32 board by 0BAB1

About the HOLY ESC PCB

HOLY ESC is an open source STM32 PCB design by 0BAB1, published on GitHub under the BSD-3-Clause license. It is a 4-layer board measuring 64.9 × 39.2 mm, with 70 components from 19 distinct parts.

Its main chip is the STM32F051K8U6, from the STM32 family. Other key parts include the DRV8300DPWR, TPS62932DRLR and MCP1703-3302E/DB. By type, the board carries 31 capacitors, 23 resistors, 6 transistors, 4 ICs, 2 connectors and 2 diodes.

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

From the project

An open-source closed loop ESC based on the Atmega328p (Arduino nano)

My effort to bring an open source, closed loop ESC to life.

You can order the FULL BUILD in a couple of click right : (Todo : add link once project post is approved)

The HOLY ESC is a BACK EMF based ESC, theorically able to be loaded up to 25Amps and more. But it serve educational purupses and has not be stress tested for any applications yet.

It was designed on KiCad 9 and aims at using cheap components to make the design accessible to all.

HOLY ESC, from the project README
From the project README

Main components on the HOLY ESC

DRV8300DPWRSTM32F051K8U6TPS62932DRLRMCP1703-3302E/DB

HOLY ESC bill of materials (BOM)

70 components, 19 distinct parts.

QtyPartRefs
1
DRV8300DPWR
U1
1
STM32F051K8U6
U2
1
TPS62932DRLR
TPS62932
TI
U3
1
MCP1703-3302E/DB
MICROCHIP
U4
6
HY1904C2
HY904C2
HUAYI
Q1, Q2, Q3, Q4, Q5, Q6
2
Conn_01x04_Pin
J1, J2
2
YLED0603R
RED
YONGYUTAI
D1, D2
1
BLM18PG471SN1D
470R@100Mhz
muRata
FB1
1
MNR6045T120MT
12u
MetalLions
L2
14
CL31A106KBHNNNE
10u
Samsung Electro-Mechanics
C1, C13, C18, C19, C22, C26, C27, C28 +6
9
CL10B104KB8NNNC
100n
Samsung Electro-Mechanics
C2, C7, C14, C16, C23, C25, C35, C36 +1
6
CL21B105KBFNNNE
1u
Samsung Electro-Mechanics
C3, C4, C5, C8, C20, C21
1
CL10B333KB8NNNC
33n
Samsung Electro-Mechanics
C15
1
CL10C100JB8NNNC
10p
Samsung Electro-Mechanics
C17
8
0603WAF200JT5E
20
UNI-ROYAL
R1, R2, R6, R7, R8, R9, R23, R24
1
FRC0603F1403TS
140k
FOJAN
R3
8
RT0603BRD0710KL
10k
YAGEO
R4, R11, R12, R14, R16, R18, R19, R20
5
FRC0603F1001TS
1k
FOJAN
R5, R13, R15, R17, R22
1
FRC0603J122 TS
1k2
FOJAN
R10

HOLY ESC design files

The KiCad project lives in the 0BAB1/HOLY_ESC repository on GitHub; these links point at the commit this page was built from.

HOLY ESC: common questions

What microcontroller does the HOLY ESC use?

The HOLY ESC is built around the STM32F051K8U6, from the STM32 family.

How big is the HOLY ESC PCB?

The HOLY ESC measures 64.9 × 39.2 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the HOLY ESC?

70 components, from 19 distinct parts. The full bill of materials is listed on this page.

Where can I download the HOLY ESC design files?

From the 0BAB1/HOLY_ESC repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the HOLY ESC design in my own project?

Yes, under the terms of its BSD-3-Clause license, which 0BAB1 chose for the repository.

Can I test firmware for the HOLY ESC without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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