Keychain
About the Keychain PCB
Keychain is an open source PCB design by GlassyBridge, published on GitHub under the MIT license. It is a 2-layer board measuring 83 × 97.9 mm, with 16 components from 11 distinct parts.
By type, the board carries 8 resistors, 2 switches, 2 diodes, 1 module, 1 transistor and 1 battery holder.
From the project
My first PCB design. Made for solder at hack club. Thanks PCBway.
Keychain bill of materials (BOM)
16 components, 11 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Motor_DC | PinHeader_1x02_P2.54mm_Vertical | M1 |
| 1 | NPN | TO-92L_HandSolder | Q1 |
| 1 | Battery_Cell | BatteryHolder_Keystone_3034_1x20mm | BT1 |
| 1 | R_Potentiometer | Potentiometer_Vishay_T73YP_Vertical | RV1 |
| 2 | SW_Push | SW_PUSH_6mm | SW1, SW2 |
| 2 | LED | LED_D5.0mm | D1, D2 |
| 1 | R-4.7kΩ | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | R_Photo | R_LDR_5.1x4.3mm_P3.4mm_Vertical | R2 |
| 1 | R-220Ω | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3 |
| 1 | R-220Ω each = 44Ω | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4 |
| 4 | ~ | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R5, R6, R7, R8 |
Keychain design files
The KiCad project lives in the GlassyBridge/Keychain-PCB repository on GitHub; these links point at the commit this page was built from.
- LayoutFidget_keychain.kicad_pcb
- SchematicFidget_keychain.kicad_sch
- BOMProduction/bom.csv
Keychain: common questions
How big is the Keychain PCB?
The Keychain measures 83 × 97.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Keychain?
16 components, from 11 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Keychain design files?
From the GlassyBridge/Keychain-PCB repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Keychain design in my own project?
Yes, under the terms of its MIT license, which GlassyBridge chose for the repository.