
Dial MVP2
borgel/bolton_buttons
Small devices to add keys to devices that have too few

Small devices to add keys to devices that have too few
Linear MVP3 is an open-source printed circuit board by borgel, from the borgel/bolton_buttons repository on GitHub, published under the MPL-2.0 licence. It is a 4-layer board of 25.5 × 157.5 mm with 43 parts on 69 nets, routed with 740 tracks and 75 vias.
It is built around the TCA9555RTWR(UMW). Its parts include 17 switches, 8 capacitors, 6 ICs, 5 resistors and 2 diodes. It belongs with the NXP (LPC, Kinetis, i.MX RT) boards of this library.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C101, C102, C103, C104, C105, C106, C107, C108 |
| 8 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW201, SW202, SW207, SW208, SW210, SW211, SW214, SW215 |
| 4 | R_Pack 10k | Resistor_SMD:R_Array_Convex_4x1206 | RN101, RN102, RN103, RN104 |
| 4 | Rotary_Encoder_Switch | Borgel Custom:PEC11R | SW101, SW102, SW103, SW104 |
| 4 | SW_Push | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx83-2LFS | SW203, SW205, SW212, SW213 |
| 3 | APA102_5050 | Borgel Custom:LED-5050 | U102, U105, U108 |
| 2 | 4.7k | Resistor_SMD:R_0805_2012Metric | R101, R102 |
| 2 | 500r | Resistor_SMD:R_0805_2012Metric | R114, R202 |
| 2 | LED_ALT | Borgel Custom:LED_0603_SmallSilk | D101, D201 |
| 1 | 10k | Resistor_SMD:R_0805_2012Metric | R201 |
| 1 | 24LC16-SOT-23-5 | Package_TO_SOT_SMD:SOT-23-5 | U103 |
| 1 | LOGO | Borgel Custom:BTG Logo 0.5in | G*** |
| 1 | SW_Push | Borgel Custom:Schurter-MTG | SW105 |
| 1 | TCA9555RTWR | Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm | U201 |
| 1 | Teensy-LC | teensy:Teensy30_31_32_LC | U101 |

borgel/bolton_buttons
Small devices to add keys to devices that have too few

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Open the .kicadpro file in KiCad. The design includes files originating from an older KiCad workflow; review schematic links, footprints, design rules, zones, and manufacturing outputs after any conversion or upgrade.
It measures 25.5 × 157.5 mm and has 4 copper layers, 1.6 mm thick.
43 parts, built around the TCA9555RTWR(UMW). 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 borgel/bolton_buttons repository on GitHub, at the commit this page was made from: the board is mvp3/Linear-MVP3/Linear-MVP3.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
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).