HardLabs

ESC Frame

aTaylor60·ESC_Frame

ESC Frame PCB layout, top view — open source Silicon Labs board by aTaylor60

About the ESC Frame PCB

ESC Frame is an open source Silicon Labs PCB design by aTaylor60, published on GitHub. It is a 2-layer board measuring 96.9 × 96.9 mm, with 113 components from 14 distinct parts.

Its main chip is the EFM8BB21, from the Silicon Labs family. By type, the board carries 28 resistors, 12 test points, 9 capacitors and 4 ICs.

From the project

A combined frame and 4in1 brushless ESC running BLHeli_s with 16mm hole spacing

Derived from the excelent tinyPEPPER project by http://fishpepper.de As such I have also used the fishpepper KiCad resources - kicad_misc

Until I write a proper build guide the tinyPEPPER v0.5 build guide will be the best reference.

Key features: - Frame integrated ESC reduces stack height - 83mm motor-to-motor frame size suits BR1103b motors - 16x16mm hole-to-hole spacing for FC - BLHeli_S with DSHOT300 - 1S only

ESC Frame, from the project README
From the project README

Main components on the ESC Frame

EFM8BB21

ESC Frame bill of materials (BOM)

113 components, 14 distinct parts.

QtyPartRefs
4
EFM8BB21
U201, U301, U401, U501
4
TP
BL_TX1, BL_TX2, BL_TX3, BL_TX4
12
IRLML6244
FET201, FET203, FET205, FET301, FET303, FET305, FET401, FET403 +4
12
IRLML2244
FET202, FET204, FET206, FET302, FET304, FET306, FET402, FET404 +4
20
hole
H1, H2, H3, H4, H5, H6, H7, H8 +12
8
TP
Out_A1, Out_A2, Out_A3, Out_A4, Out_B1, Out_B2, Out_B3, Out_B4
4
TP
Out_C1, Out_C2, Out_C3, Out_C4
4
TP
TP1, TP2, TP101, TP102
4
TP
TP103, TP104, TP105, TP106
4
TP
TP202, TP302, TP402, TP502
5
47u
C201, C301, C401, C501, C1000
4
100n
C202, C302, C402, C502
16
1k
R201, R202, R204, R206, R301, R302, R304, R306 +8
12
10k
R203, R205, R207, R303, R305, R307, R403, R405 +4

ESC Frame design files

The KiCad project lives in the aTaylor60/ESC_Frame repository on GitHub; these links point at the commit this page was built from.

ESC Frame: common questions

What microcontroller does the ESC Frame use?

The ESC Frame is built around the EFM8BB21, from the Silicon Labs family.

How big is the ESC Frame PCB?

The ESC Frame measures 96.9 × 96.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ESC Frame?

113 components, from 14 distinct parts. The full bill of materials is listed on this page.

Where can I download the ESC Frame design files?

From the aTaylor60/ESC_Frame repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

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

The repository has no license, so all rights stay with aTaylor60. Use it as a reference, and ask the author before reusing the design.

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

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

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