FreeEEG32-alpha1.5
FreeEEG32-alpha1.5 is an open source STM32 PCB design by neuroidss: a 4-layer, 70 × 70 mm board with 192 components (35 distinct parts). It is built around the AD7779, LP5907, ADR4525, FXO-SM7_OSC-SMD7050_short and more.
4xAD7771BCPZ 64 kSPS, ADR4525BRZ 2.5V REF +-0.02%, STM32H743ZIT6 MCU 1027 DMIPS
Built around
Parts list
192 components, 35 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | AD7779 | QFN-64-1EP_9x9mm_P0.5mm_EP7.3x7.3mm | U1, U2, U3, U4 |
| 3 | LP5907 | SOT-23-5 | U5, U6, U10 |
| 1 | ADR4525 | SOIC-8_3.9x4.9mm_P1.27mm | U7 |
| 1 | FXO-SM7_OSC-SMD7050_short | Oscillator_SMD_EuroQuartz_XO91-4Pin_7.0x5.0mm_HandSoldering | U8 |
| 1 | STM32F765ZITx | LQFP-144_20x20mm_P0.5mm | U9 |
| 1 | LSM6DS3 | Bosch_LGA-14_3x2.5mm_P0.5mm | U11 |
| 1 | SN6505A | SOT-23-6_Handsoldering | U12 |
| 1 | 473521001 | 473521001 | U13 |
| 1 | ADuM3160 | SOIC-16W_7.5x10.3mm_P1.27mm | U17 |
| 1 | ADUM1402BRWZ | SOIC-16W_7.5x10.3mm_P1.27mm | U18 |
| 1 | ISO7341c | SOIC-16W_7.5x10.3mm_P1.27mm | U19 |
| 1 | 32768Hz | Crystal_SMD_EuroQuartz_EQ161-2Pin_3.2x1.5mm_HandSoldering | Y1 |
| 1 | 16MHz | Crystal_SMD_EuroQuartz_MJ-4Pin_5.0x3.2mm_HandSoldering | Y2 |
| 2 | USB_B_Micro | USB_Micro-B_Molex-105017-0001 | J37, J51 |
| 4 | Conn_02x10_Odd_Even | PinHeader_2x10_P2.54mm_Horizontal | J53, J54, J55, J56 |
| 2 | Conn_02x03_Odd_Even | PinSocket_2x03_P2.54mm_Horizontal | J57, J58 |
| 4 | Conn_01x02 | PinSocket_2x01_P2.54mm_Horizontal | J61, J62, J63, J64 |
| 4 | Conn_01x02 | PinHeader_1x02_P2.54mm_Vertical | J65, J69, J73, J80 |
| 7 | Conn_01x02 | PinSocket_1x02_P2.54mm_Vertical | J78, J79, J81, J85, J88, J89, J90 |
| 2 | Conn_02x02_Odd_Even | PinSocket_2x02_P2.54mm_Horizontal | J82, J83 |
Show 15 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | SW_Push | SW_SPST_B3U-1000P-B | SW1, SW2 |
| 1 | da2303 | 750315371 | T1 |
| 2 | D_Schottky | SOD−123 | D1, D2 |
| 76 | 100n | C_0402_1005Metric | C1, C3, C5, C7, C9, C11, C13, C14 +68 |
| 40 | 1u | C_0402_1005Metric | C2, C4, C6, C8, C10, C12, C16, C18 +32 |
| 8 | 2.2u | C_0603_1608Metric | C85, C86, C87, C88, C100, C104, C109, C110 |
| 1 | 22u | C_0805_2012Metric | C90 |
| 3 | 10u | C_0603_1608Metric | C92, C113, C115 |
| 1 | 4.7u | C_0603_1608Metric | C122 |
| 2 | CL1 | C_0402_1005Metric | C123, C125 |
| 2 | CL2 | C_0402_1005Metric | C124, C126 |
| 1 | R_EXT | R_0402_1005Metric | R10 |
| 4 | 20 | R_0402_1005Metric | R99, R100, R101, R102 |
| 2 | 4k7 | R_0402_1005Metric | R108, R109 |
| 4 | 0 | R_0402_1005Metric | R114, R115, R116, R117 |
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