HardLabs

Chiller

bullestock·chiller·pcb/chiller.kicad_pcb

Chiller PCB layout, top view — open source ESP32 board by bullestock

About the Chiller PCB

Chiller is an open source ESP32 PCB design by bullestock, published on GitHub. It is a 2-layer board measuring 94 × 57 mm, with 68 components from 42 distinct parts.

Its main chip is the ESP32-WROOM-32, from the ESP32 family. Other key parts include the DSN-MINI-360, AP1117-33 and 74LVC2G14. By type, the board carries 21 resistors, 15 connectors, 9 diodes, 7 transistors, 7 capacitors and 4 ICs.

From the project

Lasersaur chiller

Main components on the Chiller

ESP32-WROOM-32DSN-MINI-360AP1117-3374LVC2G14

Chiller bill of materials (BOM)

68 components, 42 distinct parts.

QtyPartRefs
1
ESP32-WROOM-32
U1
1
DSN-MINI-360
U2
1
AP1117-33
U3
1
74LVC2G14
U4
2
MMBT3904
Q1, Q2
4
BSS138
Q3, Q4, Q5, Q7
1
FDD8447L
Q6
1
Temp sensor 1
J1
1
Temp sensor 2
J2
1
Ext
J3
1
Mains in
J4
1
Mains out
J5
1
Compressor
J6
1
12V in
J7
1
Pump
J8
1
Ready
J9
1
Fan
J10
1
Display
J11
1
Debug
J12
1
Conn_01x04
J13
Show 22 more
QtyPartRefs
1
Flow sensor
J14
1
Buzzer
J15
1
G5LE-1
K1
1
G6B-1114C-US5DC
K2
2
SW_Push
SW1, SW2
1
TestPoint
TP1
3
1N4148
D1, D2, D7
2
MBRA210LT3
D3, D4
3
LED
D5, D6, D9
1
SS34
D8
3
1u
C1, C2, C6
2
10u
C3, C4
2
100n
C5, C7
1
4k7
R1
1
1k2
R2
1
2k2
R3
6
10k
R4, R5, R14, R17, R19, R20
6
1k
R6, R7, R15, R16, R18, R21
2
33k
R8, R11
2
18k
R9, R10
1
2k7
R12
1
1k5
R13

Chiller design files

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

Chiller: common questions

What microcontroller does the Chiller use?

The Chiller is built around the ESP32-WROOM-32, from the ESP32 family.

How big is the Chiller PCB?

The Chiller measures 94 × 57 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Chiller?

68 components, from 42 distinct parts. The full bill of materials is listed on this page.

Where can I download the Chiller design files?

From the bullestock/chiller repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Chiller design in my own project?

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

Can I test firmware for the Chiller 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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