2 layers94.8 × 67.2 mm
2 layers204 × 20 mm
Dimmlet
oxidecomputer/hw-dimmlet1Breaks out I2C connections to 2x DIMM sockets.
- Size
- 204 × 20 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 23
- Nets
- 392
- Pads
- 631
- Tracks, vias
- 114, 21
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 24 Feb 2023
- Updated
- 24 Feb 2023
Overview
Dimmlet is an open-source printed circuit board by oxidecomputer, from the oxidecomputer/hw-dimmlet repository on GitHub, published under the MPL-2.0 licence. It is a 2-layer board of 204 × 20 mm with 23 parts on 392 nets, routed with 114 tracks and 21 vias.
It is built around the TXS0102YZP. Its parts include 7 connectors, 6 capacitors, 4 resistors and 2 ICs.
Main components
1README
README.mdhw-dimmlet
Breaks out I2C connections to 2x DIMM sockets to a PMOD i2c interface for SPD work. Works well with gimletlet
Status
Rev1 required MCNs as documented. CAD was updated to resolve these issues but new CAD was not actually built since the reworked rev1s served their purpose
Parts
23| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 1uF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C3, C4, C5, C6 |
| 4 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1, J2, J5, J6 |
| 4 | R_US | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R1, R2, R3, R4 |
| 2 | 2-2308107-0 | footprints:2-2308107-0 | J3, J7 |
| 2 | C | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C1, C2 |
| 2 | MountingHole_Pad | MountingHole:MountingHole_2.2mm_M2_DIN965_Pad | H1, H2 |
| 1 | Conn_01x06 | pmod:PMOD_6pin_peripheral_horizontal | J4 |
| 1 | DIMMLET | grumpy:Oxide_Board_Identifier_18x5mm | G*** |
| 1 | LOGO | grumpy:logo-4mm-mask | G*** |
| 1 | MIC5365-2.5YC5-TR | Package_TO_SOT_SMD:SOT-353_SC-70-5 | U2 |
| 1 | TXS0102 | Package_SO:VSSOP-8_2.4x2.1mm_P0.5mm | U1 |
Questions
How big is the Dimmlet PCB?
It measures 204 × 20 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Dimmlet use?
23 parts, built around the TXS0102YZP. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Dimmlet KiCad files?
From the oxidecomputer/hw-dimmlet repository on GitHub, at the commit this page was made from: the board is dimmlet.kicad_pcb and its schematic dimmlet.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Dimmlet design in my own project?
Its repository publishes it under the MPL-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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