Stm32
Stm32 is an open source STM32 PCB design by eddyem: a 2-layer, 98 × 63.5 mm board with 98 components (68 distinct parts). It is built around the BME280, STM32F303CBT6, ISO1050DUB, 74HC4051 and more. Filed under sensors.
Code samples and ready projects based on bare-metal STM32
CAN/USB management of 2 relays and some other things ===================================================
The device can also work as USB-CAN converter.
CAN protocol is quite simple. The node receives data to selected CAN ID, transmission done with the ID = CANID + 0x100.
Pinout: - PA0/1 - Relay0/1 - PA2..5 - Button0..3 (user buttons) - PA6/7 - ADC inputs through resistive divider (0..5 and 0..12V) - PA8..10 - PWM0..2 outputs (opendrain through SI2300, 5 or 12V) - PA13/14 - SWD; the SWD pin +3.3V connected through 22Ohm resistor - PA11. PA12 - USB DM/DP - PB0..PB7 - CAN ID - PB8, PB9 - CAN…
Built around
Parts list
98 components, 68 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BME280 MCP2551-I/SN | SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | STM32F303CBT6 ISO1050DUB | SOP-8_6.62x9.15mm_P2.54mm | U2 |
| 1 | ISO1050DUB STM32F072C8Tx | LQFP-48_7x7mm_P0.5mm | U3 |
| 1 | 74HC4051 LM2576 Texas Instruments | TO-220-5_P3.4x3.7mm_StaggerEven_Lead3.8mm_Vertical | U4 |
| 1 | 74HC4051 LM1117-3.3 | SOT-223-3_TabPin2 | U5 |
| 1 | PC844 IP4220CZ6 | TSOP-6_1.65x3.05mm_P0.95mm | U6 |
| 1 | B0505S-1W B0505S | B0x0xS | Q1 |
| 1 | B0509S-1W SI2300 | SOT-23_Handsoldering | Q2 |
| 1 | SI2308 SI2300 | SOT-23_Handsoldering | Q3 |
| 1 | B2424S-2W AO3407 | SOT-23_Handsoldering | Q4 |
| 1 | B0505S-2W SI2300 | SOT-23_Handsoldering | Q5 |
| 1 | SI2300 | SOT-23_Handsoldering | Q6 |
| 1 | SI2300 | SOT-23_Handsoldering | Q7 |
| 1 | +3.3V | PinHeader_1x01_P2.54mm_Vertical | J1 |
| 1 | NRST | PinHeader_1x01_P2.54mm_Vertical | J2 |
| 1 | BOOT0 | PinHeader_1x01_P2.54mm_Vertical | J3 |
| 1 | SWDIO | PinHeader_1x01_P2.54mm_Vertical | J4 |
| 1 | SWCLK | PinHeader_1x01_P2.54mm_Vertical | J5 |
| 1 | GND | PinHeader_1x01_P2.54mm_Vertical | J6 |
| 1 | 01x05 | PinHeader_1x05_P2.54mm_Vertical | J7 |
Show 48 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Connector_Generic:Conn_02x04_Odd_Even | PinHeader_2x04_P2.54mm_Vertical | J8 |
| 1 | RS-485 Conn_01x02_Female | PinSocket_1x02_P2.54mm_Vertical | J9 |
| 1 | Screw_Terminal_01x02 | TerminalBlock_Phoenix_MKDS-1,5-2_1x02_P5.00mm_Horizontal | J10 |
| 3 | Screw_Terminal_01x03 | TerminalBlock_Phoenix_MKDS-1,5-3_1x03_P5.00mm_Horizontal | J11, J12, J17 |
| 1 | USB_B | USB_B_OST_USB-B1HSxx_Horizontal | J13 |
| 1 | 01x03 | PinSocket_1x03_P2.54mm_Vertical | J15 |
| 1 | Conn_01x02_Female | PinSocket_1x02_P2.54mm_Vertical | J16 |
| 1 | 01x05 | PinSocket_1x05_P2.54mm_Vertical | J18 |
| 7 | Hole | Hole_3mm | P1, P2, P3, P4, P5, P6, P7 |
| 1 | SOLDERJUMPER_2_OPEN NON-ISOL | R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | JP1 |
| 1 | G5LE-1-5VDC G5LE-1 | Relay_SPDT_SANYOU_SRD_Series_Form_C | K1 |
| 1 | G5LE-1 | Relay_SPDT_SANYOU_SRD_Series_Form_C | K2 |
| 1 | SW_DIP_X01 SW_DIP_x08 | SW_DIP_SPSTx08_Slide_9.78x22.5mm_W7.62mm_P2.54mm | SW1 |
| 1 | SW_DIP_X04 SW_DIP_x01 | SW_DIP_SPSTx01_Slide_6.7x4.1mm_W7.62mm_P2.54mm_LowProfile | SW2 |
| 1 | 5V | PinSocket_1x01_P2.54mm_Vertical | TP1 |
| 1 | 3.3V | PinSocket_1x01_P2.54mm_Vertical | TP2 |
| 1 | PESD1CAN | SOT-23 | D1 |
| 3 | SS14 | D_SMA-SMB_Universal_Handsoldering | D2, D4, D8 |
| 1 | USB6B1 | SOIC-8_3.9x4.9mm_P1.27mm | D3 |
| 1 | MM3Z7V5 | D_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D5 |
| 2 | CESD3v3 | D_SOD-523 | D6, D7 |
| 1 | SMBJ30A SS14 | D_SMA-SMB_Universal_Handsoldering | D9 |
| 1 | PESD1CAN SS14 | D_SMA-SMB_Universal_Handsoldering | D10 |
| 1 | 1N5822 | D_DO-201_P3.81mm_Vertical_AnodeUp | D11 |
| 1 | 100U 100u | L_12x12mm_H4.5mm | L1 |
| 1 | 0.1 1 | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C1 |
| 6 | 0.1 | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C2, C4, C6, C7, C8, C11 |
| 3 | 0.1 | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C3, C9, C15 |
| 1 | 1 | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C5 |
| 2 | 100u 16V | CP_Radial_D8.0mm_P3.50mm | C10, C14 |
| 1 | 47u 6V | CP_EIA-3216-18_Kemet-A_Pad1.58x1.35mm_HandSolder | C12 |
| 1 | 47u 10V | CP_EIA-6032-28_Kemet-C_Pad2.25x2.35mm_HandSolder | C13 |
| 1 | 10K 10k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R1 |
| 1 | 4K7 4k7 | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R2 |
| 3 | 330 22 | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R3, R10, R11 |
| 4 | 330 680 | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R4, R5, R6, R7 |
| 1 | 330 10k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R8 |
| 1 | 330 | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R9 |
| 1 | 4K7 2k2 | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R12 |
| 1 | 3K3 120 | R_1210_3225Metric_Pad1.42x2.65mm_HandSolder | R13 |
| 2 | 3K3 10k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R14, R17 |
| 1 | 3K3 330 | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R15 |
| 1 | 3K3 2k2 | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R16 |
| 1 | 3K3 47k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R18 |
| 2 | 3K3 15k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R19, R20 |
| 4 | 560 10k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R21, R25, R26, R27 |
| 2 | 560 330 | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R22, R24 |
| 1 | 120 330 | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R23 |
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