marcuswu/leaf-fallDuring the planning phase for my ULP switches, u/dynam1keNL posted about his mikefives, a radical new build that was diodeless, wireless, portless, and ultra-low power due to use of the Nordic Gazell wireless protocol…
Leaf dongle is an open-source printed circuit board by marcuswu, from the marcuswu/leaf-fall repository on GitHub, published under the MIT licence. It is a 2-layer board of 21 × 60.4 mm with 8 parts on 75 nets, routed with 150 tracks and 24 vias.
It is built around the SN74LVC1T45DCK, SK6812 and UP20-C-F-G-FL-P12-TR. Its parts include 2 ICs, 2 diodes, 2 connectors and 1 resistor.
Leaf Fall is a 6x3+4keys column-staggered split portable folding keyboard using Ultra-Low Profile (ULP) switches which builds on the Leaf Fold to add it to the unwired family tree (Lotus 58 unWired, Mitosis, and mikefives)
[Image blocked: Leaf Fold Pic]
This board is under active development and is not ready for builds yet. In particular, some of the models, the bill of materials, etc are not up to date.
During the planning phase for my ULP switches, u/dynam1keNL posted about his mikefives, a radical new build that was diodeless, wireless, portless, and ultra-low power due to use of the Nordic Gazell wireless protocol among other innovations.
The ultra-low power design had me entralled and I knew I had to make a version of my Leaf Fold that builds in some of those features. This became the Leaf Fall.
This repository contains:
A bill of materials for constructing the keyboard is also available
A build guide is in the works.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | SK6812 | LED_SMD:LED_SK6812_PLCC4_5.0x5.0mm_P3.2mm | D1, D2 |
| 1 | 5.1k | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | SN74LVC1T45DCK | Package_TO_SOT_SMD:SOT-363_SC-70-6 | U2 |
| 1 | TC2030 | Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J2 |
| 1 | UP20-C-F-G-FL-P12-TR | keeblib:SAMESKY_UP20-C-F-G-FL-P12-TR | J1 |
| 1 | ~ | keeblib:MODULE_RP2040_SHIELD | 1 |
| 1 | ~ | keeblib:Raytac_MDBT42Q_P | U1 |
It measures 21 × 60.4 mm and has 2 copper layers, 1.6 mm thick.
8 parts, built around the SN74LVC1T45DCK, SK6812 and UP20-C-F-G-FL-P12-TR. 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.
From the marcuswu/leaf-fall repository on GitHub, at the commit this page was made from: the board is dongle/leaf_dongle.kicad_pcb and its schematic PCB/Left/3leaf_fall.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
marcuswu/leaf-fall
During the planning phase for my ULP switches, u/dynam1keNL posted about his mikefives, a radical new build that was diodeless, wireless, portless, and ultra-low power due to use of the Nordic Gazell wireless protocol…
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