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Reflow-Oven

Sensei82013·Reflow-Oven·Hardware/KiCad/Reflow Project Kicad.kicad_pcb

Reflow-Oven PCB layout, top view — open source STM32 board by Sensei82013

About the Reflow-Oven PCB

Reflow-Oven is an open source STM32 PCB design by Sensei82013, published on GitHub. It is a 2-layer board measuring 40.7 × 49.8 mm, with 45 components from 30 distinct parts.

Its main chip is the STM32F103C8T6, from the STM32 family. Other key parts include the AMS1117-3.3 and MAX6675ISA_. By type, the board carries 11 capacitors, 10 resistors, 7 test points, 5 connectors, 4 diodes and 3 ICs.

From the project

STM32F103 reflow oven controller: K-type thermocouple via MAX6675, 160 W element through a solid state relay, on-MCU PI loop, browser UI over SWD, and a 7in Nextion panel in progress.

A toaster oven converted into a PCB reflow oven, driven by a custom STM32F103 board with a K-type thermocouple, a solid state relay and a 7" Nextion touch panel.

The firmware runs a PI loop on the MCU. A host can steer it either from a small web app over SWD (working today) or from the Nextion panel (in progress).

Two board quirks worth knowing before wiring anything:

Main components on the Reflow-Oven

STM32F103C8T6AMS1117-3.3MAX6675ISA_

Reflow-Oven bill of materials (BOM)

45 components, 30 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32F103C8T6
U1
1
AMS1117-3.3
U3
1
MAX6675ISA_
U4
2
BSS138
Q1, Q2
1
ATS08A-E (8MHz)
Y1
1
USB_B_Micro
J1
2
CONN_01X04_PIN
Conn_01x04_Pin
J2, J4
1
CUI_TB001-500-02BE
1760510000
J5
1
1760510000
J6
1
SW_NIDEC_CAS-120A1
SW_Nidec_CAS-120A1
SW1
1
SW_Push
SW2
1
Thermo_CS
TP2
1
Thermo_SCK
TP3
1
Thermo_SO
TP4
1
USART1_RX_V2
USART1_RX_v2
TP5
1
USART1_TX_V2
USART1_TX_v2
TP6
1
USART1_TX
TP13
1
USART1_RX
TP14
1
GREEN
D1
1
GREEN1
GREEN
D2
Show 10 more
QtyPartRefs
2
RED
D3, D4
6
100N
100n
C1, C2, C3, C4, C5, C18
1
10U
10u
C6
2
15P
15p
C7, C8
2
1u
C16, C17
1
10K
10k
R1
2
1K5
1k5
R2, R4
1
10K
1k5
R3
2
1k5
R5, R10
4
10k
R6, R7, R8, R9

Reflow-Oven design files

The KiCad project lives in the Sensei82013/Reflow-Oven repository on GitHub; these links point at the commit this page was built from.

Reflow-Oven: common questions

What microcontroller does the Reflow-Oven use?

The Reflow-Oven is built around the STM32F103C8T6, from the STM32 family.

How big is the Reflow-Oven PCB?

The Reflow-Oven measures 40.7 × 49.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Reflow-Oven?

45 components, from 30 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 Reflow-Oven design files?

From the Sensei82013/Reflow-Oven 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 Reflow-Oven design in my own project?

The repository has no license, so all rights stay with Sensei82013. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Reflow-Oven without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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