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Hw amp

intentfulmotion·hw-amp·design/amp.kicad_pcb

Hw amp PCB layout, top view — open source ESP32 board by intentfulmotion

About the Hw amp PCB

Hw amp is an open source ESP32 PCB design by intentfulmotion, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 61 × 36 mm, with 47 components from 25 distinct parts.

Its main chip is the ESP32-WROOM-32D, from the ESP32 family. Other key parts include the CP2102N-A02-GQFN24R, MCP73833-FCI_MF, STM6601CQ2BDM6F, LD39200PU33R and LIS2HH12. By type, the board carries 16 capacitors, 13 resistors, 6 ICs, 6 connectors, 3 transistors and 2 diodes.

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

From the project

An ESP32 based, mobile smart lighting controller for bicycles, scooters, and other personal mobility

An ESP32 based lighting controller designed for lighting up bicycles, scooters, skateboards, and other micromobility.

3 axis, low noise, low zero-g error accelerometer (LIS2DHH12TR) Power supervisor + 2A regulated 3.3V output for long lengths of LEDs (WS2812B style or APA102 style leds) USB C Power Delivery compatible charging (does not implement the USB PD spec for higher charging rates) One button input connected to the ESP32 through the power supervisor One WS2812B LED for status onput LiPo charging @ 1A with charging and done charging indications Pin connections for LiPo battery with…

Main components on the Hw amp

CP2102N-A02-GQFN24RMCP73833-FCI_MFSTM6601CQ2BDM6FLD39200PU33RESP32-WROOM-32DLIS2HH12

Hw amp bill of materials (BOM)

47 components, 25 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
CP2102N-A02-GQFN24R
IC1
1
MCP73833-FCI_MF
IC2
1
STM6601CQ2BDM6F
IC3
1
LD39200PU33R
IC4
1
ESP32-WROOM-32D
U1
1
LIS2HH12
U2
2
PMBT2222,215
Q1, Q2
1
Si2347DS-T1-GE3
Q3
1
USB4105-GF-A
J1
4
SM04B-SRSS-TB(LF)(SN)
J2, J3, J6, J7
1
Conn_02x03_Odd_Even
J5
1
EVQ-Q2U03W
S1
1
WS2812B
D1
1
BAT60AE6327HTSA1
D2
8
GRM155R61H104KE14D
C1, C2, C4, C5, C9, C10, C12, C15
4
GRM188R61A106KE69D
C3, C8, C13, C14
4
TMK107BJ105KA-T
C6, C7, C11, C16
4
RC0402FR-0710KL
R1, R6, R7, R13
2
RC0201FR-075K1L
R2, R3
1
CRCW040222K6FKEDC
R4
Show 5 more
QtyPartRefs
1
CRCW0402140RFKEDC
R5
1
RC0603FR-101K2L
R8
1
AC0402FR-13100KL-SamacSys_Parts
R9
2
RC0402FR-0710KL
R10, R11
1
RR0510P-102-D
R12

Hw amp design files

The KiCad project lives in the intentfulmotion/hw-amp repository on GitHub; these links point at the commit this page was built from.

Hw amp: common questions

What microcontroller does the Hw amp use?

The Hw amp is built around the ESP32-WROOM-32D, from the ESP32 family.

How big is the Hw amp PCB?

The Hw amp measures 61 × 36 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Hw amp?

47 components, from 25 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 Hw amp design files?

From the intentfulmotion/hw-amp repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Hw amp design in my own project?

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

Can I test firmware for the Hw amp 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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