Oscar components
Oscar components is an open source STM32 PCB design by dchwebb: a 4-layer, 71 × 100 mm board with 63 components (40 distinct parts). It is built around the LT1117-3.3, ILI9341_SPI_DAUGHTERBOARD, STM32F446RETX, TL074 and more. Filed under audio and test & measurement and displays & leds.
Eurorack 3 Channel Oscilloscope based on ARM STM32F446 MCU
Oscar is a three channel oscilloscope, tuner, spectrum analyser and MIDI event viewer designed for use in a Eurorack modular synthesiser.
Version 3 changes: - Optimised for DIY building - Build Guide - Bill of Materials - Illuminated buttons for quick channel selection - USB input for firmware updates and USB MIDI analysis - An opto-coupler and passive mult on the serial MIDI input - Dedicated Menu button
Built around
Parts list
63 components, 40 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LT1117-3.3 | SOT-223-3_TabPin2 | U1 |
| 1 | ILI9341_SPI_DAUGHTERBOARD ILI9341_SPI_Daughterboard | ILI9341_SPI_daughterboard_v2 | U2 |
| 1 | STM32F446RETX STM32F446RETx | LQFP-64_10x10mm_P0.5mm | U3 |
| 1 | TL074 | SOIC-14_3.9x8.7mm_P1.27mm | U4 |
| 1 | MCP6004 | SOIC-14_3.9x8.7mm_P1.27mm | U5 |
| 1 | H11L1 | H11L1 | U6 |
| 1 | 8MHZ 8MHz | Crystal_SMD_5032-2Pin_5.0x3.2mm_Large_Pads | Y1 |
| 1 | ChannelC_In | THONKICONN_hole | J3 |
| 1 | ChannelA_In | THONKICONN_hole | J4 |
| 1 | ChannelB_In | THONKICONN_hole | J5 |
| 1 | ChC_Buff_Out | THONKICONN_hole | J6 |
| 1 | ChA_Buff_Out | THONKICONN_hole | J7 |
| 1 | ChB_Buff_Out | THONKICONN_hole | J8 |
| 1 | MIDI_IN | Thonkiconn_Stereo-PJ366ST | J9 |
| 1 | MIDI_THROUGH | Thonkiconn_Stereo-PJ366ST | J10 |
| 1 | USB_C_Receptacle | USB_C_Receptacle_Amphenol_12401951E412A | J11 |
| 1 | Reset_Button | SW_PUSH_6mm_aligned | SW1 |
| 1 | Menu_Button | SW_PUSH_6mm_aligned | SW2 |
| 1 | Left_Encoder | Encoder | SW3 |
| 1 | Right_Encoder | Encoder | SW4 |
Show 20 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ChA_Btn | Low_Profile_LED_Button | BTN1 |
| 1 | ChB_Btn | Low_Profile_LED_Button | BTN2 |
| 1 | ChC_Btn | Low_Profile_LED_Button | BTN3 |
| 2 | 1N5819 | D_SOD-123 | D1, D2 |
| 1 | 1N4148W | D_SOD-123 | D3 |
| 1 | RCLAMP0502B | SOT-416 | D4 |
| 1 | C1017 L | R_0805_2012Metric | L1 |
| 4 | 4.7UF 4.7uF | C_0805_2012Metric | C1, C9, C11, C15 |
| 2 | 22UF 22uF | CP_Elec_4x5.8 | C2, C8 |
| 6 | 100NF 100nF | C_0805_2012Metric | C3, C6, C7, C10, C12, C13 |
| 2 | 30PF 30pF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C4, C5 |
| 1 | 1UF 1uF | C_0805_2012Metric | C14 |
| 1 | 150 | R_0805_2012Metric | R1 |
| 6 | 100K 100k | R_0805_2012Metric | R2, R3, R4, R5, R6, R7 |
| 3 | 15K 15k | R_0805_2012Metric | R8, R9, R10 |
| 2 | C23162 10k | R_0805_2012Metric | R11, R12 |
| 3 | 100 | R_0805_2012Metric | R13, R14, R15 |
| 1 | 220 | R_0805_2012Metric | R16 |
| 1 | 470 | R_0805_2012Metric | R17 |
| 3 | C23162 1.5k | R_0805_2012Metric | R18, R19, R20 |
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