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Roamr motors

uw-roamr·roamr·hw/roamr-motors/roamr-motors.kicad_pcb

Roamr motors PCB layout, top view — open source ESP32 board by uw-roamr

About the Roamr motors PCB

Roamr motors is an open source ESP32 PCB design by uw-roamr, published on GitHub. It is a 4-layer board measuring 115 × 55 mm, with 96 components from 38 distinct parts.

Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the SGM2212-3.3XKC3G/TR, CP2102N-A02-GQFN28 and DRV8316CRRGFR. By type, the board carries 30 capacitors, 25 resistors, 19 diodes, 10 connectors, 5 ICs and 2 transistors.

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

From the project

turn your phone into a robot running SLAM with two motors, two control boards, and a bluetooth chip

Mobile phones and mobile robots have many common requirements:

- performant sensors (cameras, IMUs, LiDAR, GPS) and sensor fusion - networking capabilities (WiFi, Bluetooth Low Energy, LTE) - energy efficiency

What if we turned the iPhone into a robot?

- exposes the core sensor data through iOS APIs - Camera - LiDAR (iPhone Pro 12+) - IMU - runs WASM bytecode using statically compiled WAMR iwasm - communicates with ESP32 over BLE to control motors

Main components on the Roamr motors

SGM2212-3.3XKC3G/TRCP2102N-A02-GQFN28ESP32-S3-WROOM-1DRV8316CRRGFR

Roamr motors bill of materials (BOM)

96 components, 38 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
SGM2212-3.3XKC3G/TR
SGM2212-3.3XKC3G_TR
U1
1
CP2102N-A02-GQFN28
U2
1
ESP32-S3-WROOM-1
U3
2
DRV8316CRRGFR
U4, U5
2
L8050QLT1G
Q1, Q2
4
JST_XH_S2B-XH-A-1
J1, J4, J5, J8
2
USB4215-03-A
J2, J3
2
JST_PH_B3B-PH-SM4-TB
J6, J9
2
JST_SH_BM06B-SRSS-TB
J7, J10
2
0466005.NRHF
F1, F2
2
1825910-6
SW1, SW2
1
5005-5009
TestPoint
TP5
2
SMLJ13CA-R
D1, D4
6
LESD5D5.0CT1G
D2, D3, D5, D6, D7, D8
2
1N5819HW-7-F
D9, D10
4
PMEG3050EP,115
D11, D12, D17, D18
4
KT-0603G
GLED
D13, D14, D15, D16
1
KT-0603R
RLED
D19
3
10UF
10uF
C1, C2, C8
2
2.2UF
2.2uF
C3, C4
Show 18 more
QtyPartRefs
1
4.7UF
4.7uF
C5
8
0.1UF
0.1uF
C6, C9, C11, C12, C14, C17, C23, C26
1
22UF
22uF
C7
5
1UF
1uF
C10, C13, C16, C22, C25
2
47NF
47nF
C15, C24
6
30PF
30pF
C18, C20, C21, C27, C29, C30
2
10UF
10uF
C19, C28
4
5.1KR
5.1kR
R1, R2, R3, R4
1
4.3KR
4.3kR
R5
1
910R
R6
3
0R
R7, R16, R17
2
100R
R8, R9
2
47.5K
47.5k
R10, R15
1
1k
R11
3
10KR
10kR
R12, R13, R19
1
22.1K
22.1k
R14
1
430R
R18
6
1KR
1kR
R20, R21, R22, R23, R24, R25

Roamr motors design files

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

Roamr motors: common questions

What microcontroller does the Roamr motors use?

The Roamr motors is built around the ESP32-S3-WROOM-1, from the ESP32 family.

How big is the Roamr motors PCB?

The Roamr motors measures 115 × 55 mm, has 4 copper layers and is 1.6062 mm thick.

How many components are on the Roamr motors?

96 components, from 38 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 Roamr motors design files?

From the uw-roamr/roamr 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 Roamr motors design in my own project?

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

Can I test firmware for the Roamr motors 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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