Usb1
Usb1 is an open source STM32 PCB design by neuroidss: a 2-layer, 99.1 × 99.1 mm board with 185 components (27 distinct parts). It is built around the AD7771BCPZ, LP5907QMFX-3.3Q1, ADR4525BRZ, CB3LV-3I-8M1920 and more.
as FreeEEG32 plus alpha1.5 test passed, FreeEEG32 project changed to beta version
Docker container setup (Linux). Extract the following and run: - Compilation: ./gcc-arm-none-eabirun.sh - Flashing: sudo ./openocdflash.sh
The AC6 stuff is deprecated but the blue pill is still needed.
Assembly: https://github.com/neuroidss/FreeEEG32-beta/blob/master/AssemblyFiles/KiCAD/out/assembly.zip
BOM: https://github.com/neuroidss/FreeEEG32-beta/blob/master/AssemblyFiles/bom/components%20FreeEEG32%20beta.csv
Built around
Parts list
185 components, 27 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | AD7771BCPZ AD7779 | QFN-64-1EP_9x9mm_P0.5mm_EP7.3x7.3mm_ThermalVias | U1, U2, U3, U4 |
| 3 | LP5907QMFX-3.3Q1 LP5907 | SOT-23-5 | U5, U6, U10 |
| 1 | ADR4525BRZ ADR4525 | SOIC-8_3.9x4.9mm_P1.27mm | U7 |
| 1 | CB3LV-3I-8M1920 FXO-SM7_OSC-SMD7050_short | Oscillator_SMD_EuroQuartz_XO91-4Pin_7.0x5.0mm_HandSoldering | U8 |
| 1 | STM32H743ZIT6U STM32F765ZITx | LQFP-144_20x20mm_P0.5mm | U9 |
| 1 | LSM6DSOXTR LSM6DS3 | Bosch_LGA-14_3x2.5mm_P0.5mm | U11 |
| 1 | SN6505BDBVR SN6505A | SOT-23-6_Handsoldering | U12 |
| 1 | 47352-1001 473521001 | 473521001 | U13 |
| 3 | ISO7341c | SOIC-16W_7.5x10.3mm_P1.27mm | U14, U15, U16 |
| 16 | Conn_02x08_Odd_Even | PinHeader_2x08_P2.54mm_Vertical | J1, J2, J3, J4, J5, J6, J7, J8 +8 |
| 8 | Conn_01x03 | PinHeader_1x03_P2.54mm_Vertical | J17, J18, J19, J20, J29, J30, J32, J33 |
| 5 | Conn_01x04 | PinHeader_1x04_P2.54mm_Vertical | J21, J22, J31, J34, J38 |
| 4 | Conn_01x02 | PinHeader_1x02_P2.54mm_Vertical | J23, J24, J35, J36 |
| 4 | Conn_02x18_Odd_Even | PinHeader_2x18_P2.54mm_Vertical | J25, J26, J27, J28 |
| 1 | 105017-1001 Conn_01x05 | PinHeader_1x05_P2.54mm_Vertical | J37 |
| 6 | Conn_02x04_Odd_Even | PinHeader_2x04_P2.54mm_Vertical | J39, J40, J41, J42, J43, J44 |
| 1 | 750315371 da2303 | SMT Power Transformer | T1 |
| 2 | MBR0520LT1G D_Schottky | SOD−123 | D1, D2 |
| 58 | CL05B104KO5NNNC 100n | C_0402_1005Metric | C1, C3, C7, C9, C11, C13, C14, C15 +50 |
| 28 | CL05A105KO5NNNC 1u | C_0402_1005Metric | C2, C4, C8, C10, C12, C16, C21, C23 +20 |
Show 7 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 9 | CL05B104KO5NNNC 100n | C_0603_1608Metric | C5, C17, C26, C38, C47, C59, C68, C80 +1 |
| 8 | CL05A105KO5NNNC 1u | C_0603_1608Metric | C6, C18, C27, C39, C48, C60, C69, C81 |
| 8 | GRM188R71A225KE15D 2.2u | C_0603_1608Metric | C85, C86, C87, C88, C100, C104, C109, C110 |
| 1 | GRM21BR60J226ME39L 22u | C_0805_2012Metric | C90 |
| 3 | GRM188R60J106ME47D 10u | C_0603_1608Metric | C92, C113, C115 |
| 6 | 100n | C_0402_1005Metric | C116, C117, C118, C119, C120, C121 |
| 1 | C0603C475K9PACTU 4.7u | C_0603_1608Metric | C122 |
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