From 36edf704f12bde05475c4e39272c9124c5559b7f Mon Sep 17 00:00:00 2001 From: Kieran Klukas Date: Mon, 31 Mar 2025 20:23:40 -0400 Subject: [PATCH] feat: add bom --- README.md | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/README.md b/README.md index 5ebbed3..313887c 100644 --- a/README.md +++ b/README.md @@ -5,6 +5,37 @@ > ### More deets coming soon 👀 > A split, low-profile, wireless mechanical keyboard inspired by the Corne design. Made possible through the [`hackpad`](https://hackpad.hackclub.com) grant from Hack Club. +## BOM + +| Part | Quantity | Price | Link | Description | Notes | +| --- | --- | --- | --- | --- | --- | +| SuperMini NRF52840 (Nice!Nano footprint) | 2 | `$4.15` | [AliExpress](https://www.aliexpress.us/item/3256805848952479.html) | Wireless Microcontroller | | +| Machine Sockets 2.54mm | 1 | `$1.75` | [AliExpress](https://www.aliexpress.us/item/2251832794091942.html) | 26x2 needed to socket the two MCUs | comes in a 10 pack of 40x1 rows | +| Machine Pins | 1 | `$3.99` | [AliExpress](https://www.aliexpress.us/item/2251832672116019.html) | 26x2 needed to socket the two MCUs | comes in a 100 pack of 4 per header | +| Power Switch | 4 | `$0.39` | [DigiKey](https://www.digikey.com/en/products/detail/same-sky-formerly-cui-devices/SLW-1277744-3A-N-D/24399208) | one for each half | added an extra switch for each side as backup | +| JST PH 2.0mm 2-pin Connector | 4 | `$0.10` | [DigiKey](https://www.digikey.com/en/products/detail/jst-sales-america-inc/S2B-PH-K-S/926626) | for battery connection | | +| 301230 3.7V 110mAh LiPo Battery | 2 | `$6.30` | [AliExpress](https://www.aliexpress.us/item/3256805162053912.html) | comes pre jst ph-ifised | two lot | +| PCB | 1 | `$25.15` | [JLCPCB](https://jlcpcb.com) | 2-layer, 1.6mm, black, leaded Hasl | I wanted to get ENIG but that bumped the price by `$20` | +| Diodes | 42 | `$1.43` | [DigiKey](https://www.digikey.com/en/products/detail/diotec-semiconductor/1N4148/13164514) | 1N4148 | | +| Choc v1 switches | 50 | `$27.50` | [Chosfox](https://chosfox.com/products/kailh-chocs?variant=42514648006850) | pink variant: `20+-5 gf` linear | | +| 1u keycaps | 40 | `$14.00` | [Chosfox](https://chosfox.com/collections/low-profile-keycaps/products/chocfox-cfx-choc-keycaps) | White PBT low profile | | +| 1u homing keycaps | 2 | `$0.80` | [Chosfox](https://chosfox.com/collections/low-profile-keycaps/products/chocfox-cfx-choc-keycaps) | White PBT low profile | | +| 1.75u keycaps | 2 | `$1.65` | [Chosfox](https://chosfox.com/collections/low-profile-keycaps/products/chocfox-cfx-choc-keycaps) | White PBT low profile | | + +Total cost: `$85.11` + +### Store breakdown + +| Store | Shipping | Subtotal | Total | Items | +| --- | --- | --- | --- | --- | +| AliExpress | `$9.43` | `$26.64` | `$36.07` | 2x SuperMini NRF52840, Machine Sockets, Machine Pins, 2x LiPo Battery | +| DigiKey | `$6.99` | `$4.49` (tarrifs and tax) | `$11.48` | 4x Power Switch, 4x JST Connector, 42x Diodes | +| Chosfox | `$5.00` | `$43.95` | `$48.95` | 50x Choc v1 switches, 40x 1u keycaps, 2x 1u homing keycaps, 2x 1.75u keycaps | +| JLCPCB | `$10.55` | `$14.60` | `$25.15` | 1x PCB | + +Total shipping: `$31.97` +Total cost: `$122.67` (including shipping, tax, and tarrifs) + ## Schematics ![schematic](https://raw.githubusercontent.com/taciturnaxolotl/thyme/main/.github/images/schematic.svg) -- knotmirror 0.0.1