HardLabs

Bottom

kruglovvs·strange_game·ProjectKicad/Bottom.kicad_pcb

Bottom PCB layout, top view — open source ESP32 board by kruglovvs

About the Bottom PCB

Bottom is an open source ESP32 PCB design by kruglovvs, published on GitHub. It is a 2-layer board measuring 75 × 75 mm, with 50 components from 18 distinct parts.

Its main chip is the ESP32-DEVKIT-V1, from the ESP32 family. Other key parts include the charge controller, boost converter, LDL1117S33R, TMP112xxDRL and vibrating_sensor. By type, the board carries 24 capacitors, 8 ICs, 8 resistors, 4 diodes, 2 transistors and 1 module.

From the project

this is the hardware part of the project "Games with secrets"

Main components on the Bottom

charge controllerboost converterLDL1117S33RESP32-DEVKIT-V1TMP112xxDRLvibrating_sensorLSM6DS3MQ-135 gas sensor

Bottom bill of materials (BOM)

50 components, 18 distinct parts.

QtyPartRefs
1
charge controller
U1
1
boost converter
U2
1
LDL1117S33R
U3
1
ESP32-DEVKIT-V1
U4
1
TMP112xxDRL
U5
1
vibrating_sensor
U6
1
LSM6DS3
U7
1
MQ-135 gas sensor
U8
1
Motor_DC
M1
2
SI2318DS-T1-GE3
Si2302A
Vishay Semiconductor
Q1, Q3
1
Display
J1
1
R_Potentiometer
RV1
4
S07B-GS08
D1, D2, D3, D4
1
L_Iron
L1
19
C_Generic
C1, C11, C12, C13, C14, C15, C18, C19 +11
5
C_Generic
C3, C4, C16, C17, C32
6
RC0603FR-071K2L
10k_0805
Yageo
R1, R2, R16, R18, R29, R36
2
RC0603FR-071K2L
330_0805
Yageo
R15, R17

Bottom design files

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

Bottom: common questions

What microcontroller does the Bottom use?

The Bottom is built around the ESP32-DEVKIT-V1, from the ESP32 family.

How big is the Bottom PCB?

The Bottom measures 75 × 75 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Bottom?

50 components, from 18 distinct parts. The full bill of materials is listed on this page.

Where can I download the Bottom design files?

From the kruglovvs/strange_game repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Bottom design in my own project?

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

Can I test firmware for the Bottom 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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