2 layers100 × 100 mm
HeatingElement
Keyaan-07/Hotplate
Check out the Project's files on KiCanvas(PCB and Heating element) and Onshape!
10 partsMIT
4 layers60 × 45 mm
Hotplate
Keyaan-07/HotplateCheck out the Project's files on KiCanvas(PCB and Heating element) and Onshape!
- Size
- 60 × 45 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 85
- Nets
- 71
- Pads
- 293
- Tracks, vias
- 391, 92
- Pours
- 16
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 15 Jun 2026
- Updated
- 5 Oct 2026
Overview
Hotplate is an open-source printed circuit board by Keyaan-07, from the Keyaan-07/Hotplate repository on GitHub, published under the MIT licence. It is a 4-layer board of 60 × 45 mm with 85 parts on 71 nets, routed with 391 tracks and 92 vias.
It is built around the ESP32-C3, LM2842YQMK and MCP1416-E/OT, with the TMP100NA, TPS56339DDC and W25Q128JVPIQ among its other parts. Its parts include 27 capacitors, 19 resistors, 10 ICs, 5 diodes and 4 connectors. It belongs with the ESP32 and RISC-V boards of this library.
Main components
10
ESP32-C3
QFN-32-EP(5x5)12bit 160MHz 22 3V~3.6V Others QFN-32-EP(5x5) Microcontrollers (MCU/MPU/SOC) ROHSEspressif SystemsMicrocontrollers (MCU/MPU/SOC)
LM2842YQMK
TSOT-23-6L-40℃~+125℃@(TJ) 1 1.25MHz 1.35mA 4.5V~42V 600mA 765mV~34V Adjustable Buck Buck Built-in No TSOT-23-6L DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
MCP1416-E/OT
SOT-23-5-40℃~+150℃ 1 1.5A 1.5A 20ns 20ns 4.5V~18V 41ns 48ns 650uA Interleaved conduction protection Low Side MOSFET SOT-23-5 Gate Drivers ROHSMicrochip TechnologyGate DriversTMP100NA
SOT23-6-55°C to +125°C, ±3.0°C Accuracy, Digital Temperature Sensor with I2C InterfaceTexas InstrumentsUncategorisedTPS56339DDC
TSOT-23-6-40℃~+125℃@(TJ) 1 3A 4.5V~24V 500kHz 800mV~16V 98uA Adjustable Buck Buck Built-in Yes TSOT-23-6 DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
W25Q128JVPIQ
WSON-8-EP(5x6)-40℃~+85℃ 100,000 cycles 10uA 120ms@(32KB) 128Mbit 133MHz 2.7V~3.6V 20 Years Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection、Power lock protection SPI WSON-8-EP(5x6) NOR FLASH ROHSWinbond ElecNOR FLASHTXS0101DBV
SOT-23-6-40℃~+85℃ 1 1 1.65V~3.6V 2.3V~5.5V 24Mbps Automatic direction detection、Output enable high-impedance、Integrated pull-up resistor Bidirectional Level translator Push-Pull、Open-drain SOT-23-6 Translators, Level Shifters ROHSTexas InstrumentsTranslators, Level Shifters
AON7262E
DFN-8(3x3)-55℃~+150℃ 1 N-channel 1.652nF 10mΩ@10V 2.2V 34A 43W 45nC@10V 520pF 52pF 60V N-Channel DFN-8(3x3) MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
ESDA5V3L
SOT-23-40℃~+125℃@(Tj) 15A@2.5us 2 220pF 2uA 300W 3V 5.3V 5.3V ESD IEC 61000-4-2 Unidirectional SOT-23 ESD and Surge Protection (TVS/ESD) ROHSSTMicroelectronicsESD And Surge Protection (TVS/ESD)
1N4148W
SOD-123150mA 1A 1V@50mA 1uA@75V 400mW 4ns 75V Independent SOD-123 Switching Diodes ROHSSTMicroelectronicsSwitching Diodes
README
README.mdHotplate
An open-source hotplate designed to take power from USB type-C and then be configured and controlled over Wi-Fi. It uses the ESP32-C3 microcontroller, along with 16MB of storage. There are two terminal blocks to connect with the heating element and it's temperature sensor. There is short circuit protection along with accurate current measurement on the power lines. The control frequency is 10KHz for the heating element. The heating element can be mounted on standoffs so as to not heat the surface below it.
Check out the Project's files on KiCanvas(PCB and Heating element) and Onshape!
Features:
- Upto 45W heating
- Wi-Fi Controlled
- Overcurrent protection & shortcircuit protection.
- accurate current measurement
- Integrated temperature sensor
- Open Source!
- integrated ADC for NTC temperature readings
wiring diagram between two parts:
(made by yours truly in paint)
Why i made this project
I really wanted to build a custom hotplate so that i could make my own PCBs with ease and not struggle! The heating element is made up of an aluminium PCB so that there is good thermal conductivity.
Assembly instructions
- Upload the gerber files from the production folder to your specific PCB fab.
- Order PCBs and a stencil for soldering.
- Order all the parts from the links in the bom.csv file.
- Get some solder paste and paste it onto the PCB. pick and place all the components.
- heat the PCB in an oven/a reflow station.
- connect all the THT components
- flash the firmware via a USB to UART converter.
- connect the heating element. You are done!
Note about firmware
I dont think i will be able to do the firmware unless and until i have the project in hand, because this requires proper PID tuning to just get the temperature right, and also it needs to be adjusted for errors in temperature measurement and power control!
BOM
License
Licensed under the MIT license.
Parts
85| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 100n | Capacitor_SMD:C_0402_1005Metric | C1, C4, C6, C7, C14, C15, C16, C17, C20, C21, C22, C23 |
| 6 | 10u | Capacitor_SMD:C_0805_2012Metric | C2, C3, C5, C25, C26, C27 |
| 6 | TestPoint | TestPoint:TestPoint_Pad_D1.5mm | TP1, TP2, TP3, TP4, TP5, TP6 |
| 5 | 10k | Resistor_SMD:R_0402_1005Metric | R3, R6, R16, R18, TH1 |
| 4 | 15p | Capacitor_SMD:C_0402_1005Metric | C8, C9, C10, C11 |
| 4 | 5.1k | Resistor_SMD:R_0402_1005Metric | R9, R10, R14, R15 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 3 | 100 | Resistor_SMD:R_0402_1005Metric | R4, R7, R8 |
| 3 | 1u | Capacitor_SMD:C_0402_1005Metric | C18, C19, C24 |
| 3 | AON7262E | footprints:DFN-5-1EP_3x3mm_P0.65mm_AON7262E | Q1, Q2, Q3 |
| 2 | 100k | Resistor_SMD:R_0402_1005Metric | R12, R13 |
| 2 | 4.7u | Inductor_SMD:L_0805_2012Metric | L1, L2 |
| 2 | ESDA5V3L | Package_TO_SOT_SMD:SOT-23-3 | D3, D4 |
| 2 | LED | LED_SMD:LED_0402_1005Metric | D1, D2 |
| 2 | Screw_Terminal_01x02 | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm | J2, J3 |
| 2 | TXS0101DBV | Package_TO_SOT_SMD:SOT-23-6 | U4, U6 |
| 1 | 1.2p | Capacitor_SMD:C_0402_1005Metric | C13 |
| 1 | 1.8p | Capacitor_SMD:C_0402_1005Metric | C12 |
| 1 | 1N4148W | Diode_SMD:D_SOD-123 | D5 |
| 1 | 1k | Resistor_SMD:R_0402_1005Metric | R11 |
| 1 | 30 | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 31.6k | Resistor_SMD:R_0402_1005Metric | R17 |
| 1 | 32.786KHz | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y2 |
| 1 | 3n | Inductor_SMD:L_0402_1005Metric | L3 |
| 1 | 40MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 56k | Resistor_SMD:R_0402_1005Metric | R2 |
| 1 | 5m | Resistor_SMD:R_0805_2012Metric | R5 |
| 1 | ADS1110 | Package_TO_SOT_SMD:SOT-23-6 | U7 |
| 1 | AP33772SDKZ-xx-FA02 | Package_DFN_QFN:Texas_RTW_WQFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm | U3 |
| 1 | Antenna_Shield | RF_Antenna:Texas_SWRA117D_2.4GHz_Left | AE1 |
| 1 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | ESP32-C3 | Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.7x3.7mm | U1 |
| 1 | LM2842Y | Package_TO_SOT_SMD:TSOT-23-6 | U8 |
| 1 | LOGO | LOGO | G*** |
| 1 | MCP1416 | Package_TO_SOT_SMD:SOT-23-5 | U9 |
| 1 | TMP100 | Package_TO_SOT_SMD:SOT-23-6 | U5 |
| 1 | TPS56339DDC | Package_TO_SOT_SMD:SOT-23-6 | U2 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_XKB_U262-16XN-4BVC11 | J1 |
| 1 | W25Q128JVP | Package_SON:WSON-8-1EP_6x5mm_P1.27mm_EP3.4x4.3mm | U10 |
More from Keyaan-07/Hotplate
1Similar boards
- 2 layers
- 2 layers100 × 100 mm
- 2 layers391 × 131.1 mm
- 2 layers347.7 × 123.8 mm
- 4 layers22 × 48.4 mm
Tracer
NovaCentrix/chris-tracer-pcb
Tracer -- A module for simulating conductive ink PCB traces
21 parts - 2 layers391 × 131.2 mm
- 4 layers150 × 50 mm
- 2 layers24.4 × 35.8 mm
Questions
How big is the Hotplate PCB?
It measures 60 × 45 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Hotplate use?
85 parts, built around the ESP32-C3, LM2842YQMK, MCP1416-E/OT and TMP100NA. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Hotplate KiCad files?
From the Keyaan-07/Hotplate repository on GitHub, at the commit this page was made from: the board is hardware/hotplate.kicad_pcb and its schematic HeatingElement/HeatingElement.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Hotplate design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).