HardLabs

Rotini-Hardware

AlfredoSystems·Rotini-Hardware·Rotini-Hardware/Rotini-Hardware.kicad_pcb

Rotini-Hardware PCB layout, top view — open source ESP32 board by AlfredoSystems
Simulate this board

About the Rotini-Hardware PCB

Rotini-Hardware is an open source ESP32 PCB design by AlfredoSystems, published on GitHub under the MIT license. It is a 4-layer board measuring 47 × 21.6 mm, with 105 components from 55 distinct parts.

Its main chip is the ESP32-S3FN8, from the ESP32 family. Other key parts include the MMC5983MA, CRYSTAL_ESP32, W25Q128JVS, USBLC6-2P6 and SY8201CABC. By type, the board carries 37 capacitors, 31 resistors, 12 ICs, 9 diodes, 6 test points and 4 transistors.

It belongs with the rf & radio and iot & wireless designs in this gallery.

From the project

📖 Documentation: https://www.alfredosys.com/Rotini-Hardware/ (pinout, power limits, flashing ExpressLRS, first Arduino upload)

📖 Documentation: https://www.alfredosys.com/Rotini-Hardware/ (pinout, power limits, flashing ExpressLRS, first Arduino upload)

Rotini can be entirely manufactured and assembled by JLCPCB! They will need the gerber, BOM, and pick-and-place files found in this repo. The one caveat is JLC does not have a 400g accelerometer in their library. You will need to order H3LIS331DL via JLCPCBs global part sourcing system well before ordering your boards.

Rotini-Hardware, from the project README
From the project README

Main components on the Rotini-Hardware

MMC5983MAESP32-S3FN8CRYSTAL_ESP32W25Q128JVSUSBLC6-2P6SY8201CABCH3LIS331DLC165948ESP8285H16CRYSTAL_ESP8285SX1280CRYSTAL_SX1280

Rotini-Hardware bill of materials (BOM)

105 components, 55 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MMC5983MA
U3
1
ESP32-S3FN8
U4
1
CRYSTAL_ESP32
Crystal_ESP32
U5
1
W25Q128JVS
U6
1
USBLC6-2P6
U9
1
SY8201CABC
U20
1
H3LIS331DL
U31
1
C165948
USB_C_Receptacle
U52
1
ESP8285H16
U60
1
CRYSTAL_ESP8285
Crystal_ESP8285
U61
1
SX1280
U70
1
CRYSTAL_SX1280
Crystal_SX1280
U71
1
BSS138PS
Q1
1
AO3401A
Q20
1
LBSS84LT1G
Q30
1
2N7002W
Q31
1
C160405
JST Bootstrapping
J1
2
RFANT3216120A5T
J9, J14
1
ELRS_TX
TP1
1
ELRS_RX
TP2
Show 35 more
QtyPartRefs
1
E_BOOT
TP4
1
TX0
TP6
1
ELRS_BOOT
TP7
1
RX0
TP8
2
ESD9B3
D1, D2
1
ESD5Z5V0
D4
1
1N5819
D5
1
SMF18A
D6
1
Z5V6
D21
1
C130724
LED_blue
D40
1
C965793
LED_green
D41
1
C130721
LED_yellow
D60
1
5.6UH
5.6uH
L20
1
3NH
3nH
L101
1
2.5NH
2.5nH
L102
11
100NF
100nF
C14, C15, C17, C26, C27, C30, C31, C40 +3
2
10UF
10uF
C16, C24
2
100PF
100pF
C18, C103
1
C162274
4.7uF, 35V
C20
4
1UF
1uF
C21, C25, C28, C32
5
10PF
10pF
C22, C37, C38, C60, C61
1
C59461
22uF, 6V3
C23
3
10NF
10nF
C34, C71, C74
4
2.2UF
2.2uF
C62, C64, C65, C70
1
0.8PF
0.8pF
C100
2
1.2PF
1.2pF
C101, C102
1
0.5PF
0.5pF
C104
2
100R
R2, R6
15
10K
R7, R22, R30, R31, R32, R37, R38, R39 +7
1
68K
R20
2
15K
R21, R42
7
1K
R33, R34, R35, R36, R40, R41, R67
1
2K2
R43
2
5.1K
R56, R57
1
12K
R60

Rotini-Hardware design files

The KiCad project lives in the AlfredoSystems/Rotini-Hardware repository on GitHub; these links point at the commit this page was built from.

Rotini-Hardware: common questions

What microcontroller does the Rotini-Hardware use?

The Rotini-Hardware is built around the ESP32-S3FN8, from the ESP32 family.

How big is the Rotini-Hardware PCB?

The Rotini-Hardware measures 47 × 21.6 mm, has 4 copper layers and is 4.69 mm thick.

How many components are on the Rotini-Hardware?

105 components, from 55 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 Rotini-Hardware design files?

From the AlfredoSystems/Rotini-Hardware 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 Rotini-Hardware design in my own project?

Yes, under the terms of its MIT license, which AlfredoSystems chose for the repository.

Can I test firmware for the Rotini-Hardware 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.

Similar boards