Heizrelaissteuerung
About the Heizrelaissteuerung PCB
Heizrelaissteuerung is an open source STM32 PCB design by robin7331, published on GitHub. It is a 2-layer board measuring 155.6 × 86 mm, with 93 components from 39 distinct parts.
Its main chip is the STM32F103RBTx, from the STM32 family. Other key parts include the LM2596S-5, LD1117S33CTR and SN65HVD10DR. By type, the board carries 21 connectors, 18 resistors, 15 diodes, 15 capacitors, 7 transistors and 7 relays.
Main components on the Heizrelaissteuerung
Heizrelaissteuerung bill of materials (BOM)
93 components, 39 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM2596S-5 | TO-263-5_TabPin3 | U1 |
| 1 | LD1117S33CTR | SOT-223-3_TabPin2 | U2 |
| 1 | STM32F103RBTx | LQFP-64_10x10mm_P0.5mm | U3 |
| 1 | SN65HVD10DR | SOIC-8_3.9x4.9mm_P1.27mm | U4 |
| 7 | BSS138 | SOT-23 | Q1, Q2, Q3, Q4, Q5, Q6, Q7 |
| 1 | 8MHz(16pF) | Crystal_SMD_5032-2Pin_5.0x3.2mm | Y1 |
| 1 | 32.768kHz | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y2 |
| 7 | WJ126V-5.0-3P | TerminalBlock_bornier-3_P5.08mm | J1, J2, J3, J6, J7, J8, J15 |
| 4 | WJ126V-5.0-2P 5mm | TerminalBlock_bornier-2_P5.08mm | J4, J5, J17, J21 |
| 1 | 3.3V | PinHeader_1x04_P2.54mm_Vertical | J9 |
| 1 | 5V | PinHeader_1x04_P2.54mm_Vertical | J10 |
| 1 | GND | PinHeader_1x04_P2.54mm_Vertical | J11 |
| 2 | 5_3.3V Select | PinHeader_1x03_P2.54mm_Vertical | J12, J13 |
| 1 | UART3 / I2C2 | JST_XH_B04B-XH-A_1x04_P2.50mm_Vertical | J14 |
| 1 | SPI1 | JST_XH_B06B-XH-A_1x06_P2.50mm_Vertical | J16 |
| 1 | GPIO | PinHeader_1x04_P2.54mm_Vertical | J18 |
| 1 | SWD | JST_XH_B06B-XH-A_1x06_P2.50mm_Vertical | J19 |
| 1 | UART1 | JST_XH_B04B-XH-A_1x04_P2.50mm_Vertical | J20 |
| 1 | Fuse | Fuseholder_Cylinder-5x20mm_Schurter_0031_8201_Horizontal_Open | F1 |
| 7 | G5LA-14-DC5 | Relay_SPDT_Omron-G5LE-1 | K1, K2, K3, K4, K5, K6, K7 |
Show 19 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | SW_Push | SW_PUSH_6mm_H4.3mm | SW1 |
| 7 | LED | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D1, D3, D6, D8, D10, D12, D14 |
| 1 | SOD4001 | D_SOD-123F | D2 |
| 6 | 1N4007 | D_SOD-123F | D4, D7, D9, D11, D13, D15 |
| 1 | 1N5824 | D_SMB_Handsoldering | D5 |
| 1 | Ferrite_Bead | L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | FB1 |
| 1 | 33uH | L_Bourns_SRN6045TA | L1 |
| 7 | 100nF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C1, C3, C4, C5, C6, C7, C11 |
| 1 | 1uF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C2 |
| 2 | 20pF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C8, C9 |
| 1 | 680uF | CP_Elec_10x10.5 | C10 |
| 1 | 10uF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C12 |
| 2 | 4.3pF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C13, C14 |
| 1 | 220uF | CP_EIA-6032-28_Kemet-C_Pad2.25x2.35mm_HandSolder | C15 |
| 7 | 100k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R1, R3, R5, R7, R10, R12, R14 |
| 7 | 500 | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R2, R4, R6, R8, R11, R13, R18 |
| 1 | 10K | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R9 |
| 2 | 20k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R15, R17 |
| 1 | 120 | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R16 |
Heizrelaissteuerung design files
The KiCad project lives in the robin7331/heizrelaissteuerung repository on GitHub; these links point at the commit this page was built from.
Heizrelaissteuerung: common questions
What microcontroller does the Heizrelaissteuerung use?
The Heizrelaissteuerung is built around the STM32F103RBTx, from the STM32 family.
How big is the Heizrelaissteuerung PCB?
The Heizrelaissteuerung measures 155.6 × 86 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Heizrelaissteuerung?
93 components, from 39 distinct parts. The full bill of materials is listed on this page.
Where can I download the Heizrelaissteuerung design files?
From the robin7331/heizrelaissteuerung repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Heizrelaissteuerung design in my own project?
The repository has no license, so all rights stay with robin7331. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Heizrelaissteuerung 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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