Mt32-cm3plus
About the Mt32-cm3plus PCB
Mt32-cm3plus is an open source PCB design by peon374, published on GitHub. It is a 2-layer board measuring 76.2 × 104.1 mm, with 60 components from 29 distinct parts.
Other key parts include the DDR2_SODIMM_CM_3_Lite, PCM5102 and H11L1. By type, the board carries 29 capacitors, 14 resistors, 8 connectors, 4 ICs, 2 diodes and 2 inductors.
From the project
This is a CM3+ version of the MT32Pi hardware.
The schematic will require some custom parts that can be found in our other repository RPiCM3Parts. The schematic contains everything required to get the CM3L to run. The rest of the pins are free to be used for any project. These files are meant to help jumpstart a project that wants to build around the CM3L.
Main components on the Mt32-cm3plus
Mt32-cm3plus bill of materials (BOM)
60 components, 29 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | DDR2_SODIMM_CM_3_Lite | Socket_SODIMM_DDR2 | U1 |
| 1 | PCM5102 | TSSOP-20_4.4x6.5mm_P0.65mm | U4 |
| 2 | H11L1 | DIP-6_W7.62mm_SMDSocket_SmallPads | U6, U7 |
| 1 | USB_B_Micro | USB_Micro-B_Amphenol_10103594-0001LF_Horizontal | J1 |
| 1 | Conn_Coaxial_x2 | DUALRCA | J2 |
| 2 | MIDI-IN | SWITCHCRAFT_57PC5FS | J3, J4 |
| 1 | HD44780 | PinHeader_2x05_P2.54mm_Vertical | J5 |
| 1 | OLED | PinHeader_2x02_P2.54mm_Vertical | J6 |
| 1 | Barrel_Jack | BarrelJack_Horizontal | J7 |
| 1 | Buttons | PinHeader_1x07_P2.54mm_Vertical | J8 |
| 1 | SD_ebay-uSD-push_push_SMD | Conn_uSDcard | XS1 |
| 2 | 1N4148 | D_SOD-323F | D1, D2 |
| 2 | 4.7uH | L_Bourns-SRN4018 | L1, L2 |
| 2 | 4.7uF | C_0603 | C1, C10 |
| 3 | 100nF | C_0402_1005Metric | C2, C7, C9 |
| 4 | 10uF | C_0805_2012Metric | C3, C6, C15, C16 |
| 3 | 1uF | C_0402_1005Metric | C4, C5, C8 |
| 6 | 47uF | C_1206_3216Metric | C11, C12, C13, C17, C30, C31 |
| 1 | 4.7uF | C_0402_1005Metric | C14 |
| 2 | 2.2uF | C_0603_1608Metric | C18, C19 |
Show 9 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 10uF | C_0603_1608Metric | C20, C22, C24 |
| 3 | 100nF | C_0603_1608Metric | C21, C23, C25 |
| 2 | 2.2nF | C_0603_1608Metric | C26, C27 |
| 3 | 100k | R_0402 | R1, R3, R5 |
| 2 | 220R | R_0402_1005Metric | R2, R4 |
| 1 | 100k | R_0402_1005Metric | R6 |
| 2 | 1K | R_0402_1005Metric | R7, R8 |
| 4 | 100k | R_0603_1608Metric | R9, R10, R11, R12 |
| 2 | 470 | R_0603_1608Metric | R13, R14 |
Mt32-cm3plus design files
The KiCad project lives in the peon374/mt32-cm3plus repository on GitHub; these links point at the commit this page was built from.
Mt32-cm3plus: common questions
How big is the Mt32-cm3plus PCB?
The Mt32-cm3plus measures 76.2 × 104.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Mt32-cm3plus?
60 components, from 29 distinct parts. The full bill of materials is listed on this page.
Where can I download the Mt32-cm3plus design files?
From the peon374/mt32-cm3plus repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Mt32-cm3plus design in my own project?
The repository has no license, so all rights stay with peon374. Use it as a reference, and ask the author before reusing the design.