HardLabs

SAVITAR-V2

alexandru-mot·SAVITAR-V2-PCB

SAVITAR-V2 PCB layout, top view — open source ESP32 board by alexandru-mot
Simulate this board

About the SAVITAR-V2 PCB

SAVITAR-V2 is an open source ESP32 PCB design by alexandru-mot, published on GitHub. It is a 4-layer board measuring 54.9 × 46.3 mm, with 135 components from 45 distinct parts.

Its main chip is the ESP32-C3-MINI-1-H4X, from the ESP32 family. Other key parts include the MT2492, USBLC6-2SC6, TLV75733PDBV and QRE1113GR. By type, the board carries 54 resistors, 29 capacitors, 21 ICs, 9 transistors, 4 diodes and 2 test points.

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

From the project

KiCad Project of the SAVITAR V2 LFR

Line-follower robot mainboard, designed in KiCad 10.

- MCU: ATSAMD51J19A (main), ESP32-C3-MINI-1 (wireless/telemetry) - USB: USB-C input with USBLC6-2 ESD protection and an FSUSB42 USB mux - Power: MT2492 buck converter + TLV75733 LDO - Motor drive: dual DRV8874 H-bridges with INA240 current sensing (see the "Motor" netclass in the project settings) - Line sensing: QRE1113GR IR-reflectance array, muxed through 74HC4051/74HC238, driven via a TBD62083 array, connected over FFC to the main board

Main components on the SAVITAR-V2

MT2492USBLC6-2SC6ESP32-C3-MINI-1-H4XTLV75733PDBVQRE1113GR

SAVITAR-V2 bill of materials (BOM)

135 components, 45 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MT2492
IC1
1
USBLC6-2SC6
U1
1
ESP32-C3-MINI-1-H4X
ATSAMD51J19A-A
U2
1
ESP32-C3-MINI-1-H4X
U3
1
TLV75733PDBV
U4
16
QRE1113GR
U5, U6, U7, U8, U9, U10, U11, U12 +8
1
MMBT3904
Q1
8
BSS138
Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9
1
74HC238D,653
DEMUX1
2
DRV8874PWPR
DRV1, DRV2
1
TS-1088-AR02016
SW1
5
TestPoint
SWD_CLK1, SWD_GND1, SWD_IO1, SWD_PWR1, SWD_RST1
2
TestPoint
TP1, TP2
4
TestPoint
TPA1, TPA2, TPB1, TPB2
1
USB_C_Receptacle_USB2.0_16P
USBC1
4
SML-D12D8WT86
D1, D2, D3, D4
1
380mΩ 500mA
FB1
1
6.8uH
L1
1
10uF (X7R)
C1
2
100nF/16V
C2, C13
Show 25 more
QtyPartRefs
6
100nF/50V
C3, C7, C14, C18, C25, C28
3
22nF/50V
C4, C15, C19
1
1uF (X7R)
C5
2
100uF/25V
C6, C17
1
100nF (X7R)
C8
3
100nF
C9, C10, C11
3
22uF/16V
C12, C20, C23
1
22uF/25V
C16
2
1uF/16V
C21, C29
1
22pF
C22
1
22uF/16V
C24
1
10uF/16V
C26
1
2.2uF/16V
C27
2
2.87kΩ(1%)
R1, R8
10
10kΩ
R2, R3, R4, R9, R12, R20, R23, R24 +2
2
10kΩ(1%)
R5, R17
2
5.1kΩ
R6, R7
4
510Ω
R10, R11, R31, R32
2
100kΩ(1%)
R13, R18
1
33kΩ(1%)
R14
4
0Ω
R15, R16, R25, R26
1
18.7kΩ(1%)
R19
2
470Ω
R21, R22
8
33Ω
R27, R28, R29, R30, R33, R34, R35, R36
16
47kΩ
R41, R42, R43, R44, R45, R46, R47, R48 +8

SAVITAR-V2 design files

The KiCad project lives in the alexandru-mot/SAVITAR-V2-PCB repository on GitHub; these links point at the commit this page was built from.

SAVITAR-V2: common questions

What microcontroller does the SAVITAR-V2 use?

The SAVITAR-V2 is built around the ESP32-C3-MINI-1-H4X, from the ESP32 family.

How big is the SAVITAR-V2 PCB?

The SAVITAR-V2 measures 54.9 × 46.3 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the SAVITAR-V2?

135 components, from 45 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 SAVITAR-V2 design files?

From the alexandru-mot/SAVITAR-V2-PCB 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 SAVITAR-V2 design in my own project?

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

Can I test firmware for the SAVITAR-V2 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