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HotPlate

Markuselectronics·DIY-USB-C-Reflow-Hotplate·Manufacturing/HotPlate/HotPlate.kicad_pcb

HotPlate PCB layout, top view — open source STM32 board by Markuselectronics

About the HotPlate PCB

HotPlate is an open source STM32 PCB design by Markuselectronics, published on GitHub. It is a 4-layer board measuring 89 × 38 mm, with 69 components from 40 distinct parts.

Its main chip is the STM32F103C8T6, from the STM32 family. Other key parts include the STUSB4500QTR, TPS54331DR and MAX6675ISA_. By type, the board carries 23 capacitors, 22 resistors, 8 diodes, 4 ICs, 4 transistors and 3 switches.

It belongs with the displays & leds and sensors designs in this gallery.

From the project

A compact, open-source DIY Reflow Hotplate powered by USB-C PD and STM32. Features a custom aluminum PCB heater, OLED display, and PID temperature control for portable SMD soldering.

A professional, pocket-sized soldering hotplate powered by USB-C Power Delivery.

This repository contains all design files for the project. 👉 Full Tutorial & Guide: [Link to your Instructables Page]

/Manufacturing: Gerber files for JLCPCB. HotPlate.zip (Use SMT Assembly) Plate (Order as Aluminum PCB!) /Firmware: Source code for the STM32 microcontroller.

Main components on the HotPlate

STM32F103C8T6STUSB4500QTRTPS54331DRMAX6675ISA_

HotPlate bill of materials (BOM)

69 components, 40 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32F103C8T6
U1
1
STUSB4500QTR
U2
1
TPS54331DR
U3
1
MAX6675ISA_
U4
1
MDD50N03D
Q2
1
SS8050
Q4
2
AO4485
Q5, Q6
1
8MHZ
8MHz
X1
1
C2765186
USB-C
J1
1
C96093
Buzzer
BZ1
2
TS-1088-AR02016
S1, S3
1
C370970
RotaryEncoder
SW1
1
C2297
green
D1
2
ESDA25P35-1U1M
D2, D3
1
ESDA25W
D4
2
SS14
D5, D6
1
1N5819WS
D7
1
C2296
yellow
D8
1
120R
FB1
1
18UH
18uH
L1
Show 20 more
QtyPartRefs
6
1UF
1uF
C1, C2, C3, C4, C17, C21
7
100NF
100nF
C5, C8, C11, C13, C14, C18, C22
2
10UF
10uF
C6, C12
1
6N8
6n8
C7
1
8N2
8n2
C9
2
47UF
47uF
C10, C15
1
10NF
10nF
C16
2
20PF
20pF
C19, C20
1
10PF
10pF
C23
1
470R
R1
1
1k
R2
8
10K
10k
R3, R9, R11, R14, R17, R18, R19, R22
1
22K
22k
R4
2
100K
100k
R5, R7
1
100R
R6
1
4K99
4k99
R8
1
3K3
3k3
R10
4
4K7
4k7
R12, R13, R20, R21
1
270R
R15
1
3K9
3k9
R16

HotPlate design files

The KiCad project lives in the Markuselectronics/DIY-USB-C-Reflow-Hotplate repository on GitHub; these links point at the commit this page was built from.

HotPlate: common questions

What microcontroller does the HotPlate use?

The HotPlate is built around the STM32F103C8T6, from the STM32 family.

How big is the HotPlate PCB?

The HotPlate measures 89 × 38 mm, has 4 copper layers and is 1.599978 mm thick.

How many components are on the HotPlate?

69 components, from 40 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 HotPlate design files?

From the Markuselectronics/DIY-USB-C-Reflow-Hotplate 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 HotPlate design in my own project?

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

Can I test firmware for the HotPlate 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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