HardLabs

ChairGuru

Fugate-A·ChairGuru·Schematics/G7 Senior Design V2/G7 Senior Design V2.kicad_pcb

ChairGuru PCB layout, top view — open source ESP32 board by Fugate-A

About the ChairGuru PCB

ChairGuru is an open source ESP32 PCB design by Fugate-A, published on GitHub. It is a 2-layer board measuring 100 × 100 mm, with 48 components from 34 distinct parts.

Its main chip is the ESP-WROOM-32-N4, from the ESP32 family. Other key parts include the CP2102N-A02-GQFN28, BU01 and AMS1117-3.3. By type, the board carries 20 resistors, 10 capacitors, 6 diodes, 4 ICs, 4 connectors and 2 transistors.

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

From the project

ChairGuru - A project mainly designed for classroom teachers but has applications in all areas concerning chair management! We have designed a chair system that allows an end-user to create a layout from their computer which will then be replicated by the physical chairs as they move autonomously to their designated positions with precision!

Main components on the ChairGuru

CP2102N-A02-GQFN28ESP-WROOM-32-N4BU01AMS1117-3.3

ChairGuru bill of materials (BOM)

48 components, 34 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
CP2102N-A02-GQFN28
UART
Silicon Labs
IC3
1
ESP-WROOM-32-N4
ESP32-WROOM-32-N4
Espressif Systems
U1
1
BU01
DWM1000
Ai-Thinker
U2
1
AMS1117-3.3
Microchip Technology
U3
1
SS8050-G
T1
Comchip Technology
Q1
1
SS8050-G
T2
Comchip Technology
Q2
1
87583-2010RLF
USB
Amphenol ICC (FCI)
J1
1
PJ-051AH
JCK
CUI Devices
J2
2
PPTC191LFBN-RC
Sullins Connector Solutions
J3, J4
1
S1
IO0
1
HSMW-C170-U0000
RED
Broadcom Limited
LED1
3
HSMW-C170-U0000
LD1
Broadcom Limited
D1, D5, D6
1
HSMW-C170-U0000
LD2
Broadcom Limited
D2
1
HSMW-C170-U0000
LD3
Broadcom Limited
D3
1
HSMW-C170-U0000
LD4
Broadcom Limited
D4
2
LMK212BJ226MG-T
22uF
Taiyo Yuden
C1, C21
1
LMK212BJ226MG-T
C6
Taiyo Yuden
C3
1
LMK212BJ226MG-T
C3-1
2
CC0805KRX7R9BB104
0.1uF
YAGEO
C14, C22
1
CC0805KRX7R9BB104
C15
YAGEO
C15
Show 14 more
QtyPartRefs
1
VJ0805Y104KXABE31
0.1uF
Vishay Vitramon
C19
1
GRM219C80J475KE19D
4.7uF
Murata Electronics
C20
1
LMK212BJ226MG-T
C5
Taiyo Yuden
C31
1
0K
R0-1
1
RMCF0805ZT0R00
CRGCQ0805J470R
Stackpole Electronics Inc.
R1
2
RC0805JR-072KL
2K
YAGEO
R2, R24
1
CRGCQ0805J470R
R3
4
CRGCQ0805J470R
TE Connectivity Passive Product
R4, R5, R6, R7
1
ERJ-6GEYJ103V
R11
Panasonic
R11
1
10K
R15-1
4
ERJ-6GEYJ103V
10K
Panasonic
R21, R22, R23, R34
1
RMCF0805FT22K1
22.1K
Stackpole Electronics Inc.
R25
1
RMCF0805FT47K5
47.5K
Stackpole Electronics Inc.
R26
3
RC0805FR-071KL
1K
YAGEO
R31, R32, R33

ChairGuru design files

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

ChairGuru: common questions

What microcontroller does the ChairGuru use?

The ChairGuru is built around the ESP-WROOM-32-N4, from the ESP32 family.

How big is the ChairGuru PCB?

The ChairGuru measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ChairGuru?

48 components, from 34 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 ChairGuru design files?

From the Fugate-A/ChairGuru 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 ChairGuru design in my own project?

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

Can I test firmware for the ChairGuru 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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