SmartReflow
About the SmartReflow PCB
SmartReflow is an open source STM32 PCB design by walclu, published on GitHub. It is a 4-layer board measuring 43 × 89 mm, with 88 components from 49 distinct parts.
Its main chip is the STM32WBxx_QFN48, from the STM32 family. Other key parts include the 918-468K2029E50001, AMS1117-3.3, USBLC6-2SC6, CH340G and MAX31855KASA. By type, the board carries 34 capacitors, 11 connectors, 11 resistors, 10 ICs, 5 transistors and 5 inductors.
From the project
Repository for STM32WB55 based reflow toaster oven controller.
The smartReflowV2 is a STm32WB55 based toaster oven reflow controller for reflowing PCBs at home.
Main components on the SmartReflow
SmartReflow bill of materials (BOM)
88 components, 49 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 918-468K2029E50001 | 918-468K2029E50001 | U1, U2 |
| 1 | AMS1117-3.3 | SOT-223-3_TabPin2 | U3 |
| 1 | STM32WBxx_QFN48 | QFN50P700X700X60-49N | U4 |
| 2 | USBLC6-2SC6 | SOT-23-6 | U5, U6 |
| 1 | CH340G | SOIC-16_3.9x9.9mm_P1.27mm | U7 |
| 2 | MAX31855KASA | SOIC-8_3.9x4.9mm_P1.27mm | U8, U9 |
| 1 | ZD24C128A | SOP-8_3.9x4.9mm_P1.27mm | U10 |
| 5 | BSS316NH6327 | SOT-23 | Q1, Q2, Q3, Q4, Q5 |
| 1 | NX2016_32MHz | Crystal_SMD_2016-4Pin_2.0x1.6mm | Y1 |
| 1 | NX2012_32K768Hz | Crystal_SMD_2012-2Pin_2.0x1.2mm_HandSoldering | Y2 |
| 1 | 12M | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y3 |
| 1 | SSR2 | JST_254_2P_V | J2 |
| 1 | SSR1 | JST_254_2P_V | J3 |
| 1 | FAN1 | JST_254_2P_V | J4 |
| 1 | FAN2 | JST_254_2P_V | J5 |
| 1 | T1 | JST_254_2P_V | J6 |
| 1 | T2 | JST_254_2P_V | J7 |
| 1 | SWD | JST_254_5P_V | J8 |
| 1 | NEXTION_FRONT | JST_254_4P_V | J9 |
| 1 | NEXTION_OB | JST_254_4P_H | J10 |
Show 29 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | PWR | TerminalBlock_Phoenix_MKDS-1,5-2_1x02_P5.00mm_Horizontal | J11 |
| 1 | A-1JB | AMPHENOL_A-1JB | J12 |
| 1 | ANT3216LL00R2400A | ANT3216LL00R2400A | ANT1 |
| 1 | PS1240P02BT | Buzzer_TDK_PS1240P02BT_D12.2mm_H6.5mm | BZ1 |
| 1 | MLPF-WB55-01E3 | MLPF-WB55-01E3 | F1 |
| 2 | Open | R_0603_1608Metric | JP1, JP2 |
| 1 | B3F-4055 | SW_B3F-4055 | SW1 |
| 1 | PW | LED_0603_1608Metric | D1 |
| 1 | ST_LED | LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D2 |
| 1 | PSBD1DF40V1H | D_SOD-123F | D3 |
| 1 | 100O@100M | L_0603_1608Metric | FB1 |
| 1 | FCM1608KF-601T03 | L_0603_1608Metric | FB2 |
| 2 | 0R | L_0402_1005Metric | L2, L4 |
| 1 | 10u | L_0603_1608Metric | L3 |
| 6 | NF | C_0402_1005Metric | C1, C4, C26, C32, C35, C36 |
| 2 | 10p | C_0402_1005Metric | C2, C6 |
| 2 | 10u | C_0603_1608Metric | C3, C9 |
| 8 | 100n | C_0603_1608Metric | C5, C7, C8, C12, C14, C15, C17, C33 |
| 2 | 22p | C_0402_1005Metric | C10, C11 |
| 2 | 10n | C_0805_2012Metric | C13, C16 |
| 7 | 100n | C_0402_1005Metric | C18, C22, C23, C27, C28, C29, C31 |
| 1 | 100p | C_0402_1005Metric | C19 |
| 2 | 10n | C_0402_1005Metric | C24, C34 |
| 2 | 4u7 | C_0402_1005Metric | C25, C30 |
| 6 | 10k | R_0603_1608Metric | R1, R5, R7, R8, R9, R10 |
| 1 | 470 | R_0603_1608Metric | R2 |
| 1 | 10k | R_0402_1005Metric | R3 |
| 2 | 4k7 | R_0603_1608Metric | R4, R11 |
| 1 | 1k | R_0603_1608Metric | R6 |
SmartReflow design files
The KiCad project lives in the walclu/smartReflow repository on GitHub; these links point at the commit this page was built from.
SmartReflow: common questions
What microcontroller does the SmartReflow use?
The SmartReflow is built around the STM32WBxx_QFN48, from the STM32 family.
How big is the SmartReflow PCB?
The SmartReflow measures 43 × 89 mm, has 4 copper layers and is 1.66 mm thick.
How many components are on the SmartReflow?
88 components, from 49 distinct parts. The full bill of materials is listed on this page.
Where can I download the SmartReflow design files?
From the walclu/smartReflow repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the SmartReflow design in my own project?
The repository has no license, so all rights stay with walclu. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the SmartReflow 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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