2 layers120.1 × 52.3 mm
2 layers257.2 × 76.2 mm
UT51
Kyrremann/UT51A nordic spin on the UT47.2
- Size
- 257.2 × 76.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 137
- Nets
- 95
- Pads
- 611
- Tracks, vias
- 1,083, 99
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 15 Feb 2020
- Updated
- 10 Apr 2020
Overview
UT51 is an open-source printed circuit board by Kyrremann, from the Kyrremann/UT51 repository on GitHub. It is a 2-layer board of 257.2 × 76.2 mm with 137 parts on 95 nets, routed with 1,083 tracks and 99 vias.
It is built around the ATMEGA32U2-AU, PRTR5V0U2X and WS2812B. Its parts include 51 diodes, 14 capacitors, 6 resistors, 2 ICs and 1 switch. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
3
ATMEGA32U2-AU
TQFP-32(7x7)-40℃~+85℃ 16MHz 1KB 1KB 2.7V~5.5V 22 32KB 8 Bit AVR Built-in FLASH Power-on reset (POR)、Undervoltage detection (BOR/LVD/LVR/LVI)、Watchdog reset、External pin reset (NRST)、Built-in general-purpose timer、Programmable watchdog TQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontroller Units (MCUs/MPUs/SOCs)
PRTR5V0U2X
SOT-143-55℃~+125℃ 0.3pF、0.8pF 100W 10V、15V 5V 6.5V 6A 80nA ESD IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 Three channels Unidirectional SOT-143 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
WS2812B
5mm X 5mm Surface Mount RGB LED with Intelligent ControlWorldsemiUncategorised
README
README.mdUT51
Hot-swappable nordic 40% Keyboard PCB
The UT51 is a clone of the UT47.2 with an added cloumn for nordic letters. This also enables the use of the traditional arrow keys.
Keyboard Layout Editor layout: UT51 Layout
Diary
[rev1] - 2020-04-10
About two weeks ago I finally sat down and created the extended UT47.2 board that I wanted to make. It was some work, as I had messed up the footprint by updating them to a newer version. Also since I had to move all the components for the micro controller, I had to create most of the traces a new. I've now gotten the product back from production, but haven't had time to solder it yet.
Parts
137| Qty | Value | Footprint | References |
|---|---|---|---|
| 51 | MX-NoLED | footprints:Kailh_socket_MX | MX1, MX2, MX10, MX11, MX12, MX13, MX14, MX15, MX16, MX17, MX18, MX19, MX20, MX21, MX22, MX23 +35 |
| 51 | SOD-123 | Diode_SMD:D_SOD-123 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +35 |
| 10 | 0.1u | Capacitor_SMD:C_0603_1608Metric | C1, C2, CR1, CR2, CR3, CR4, CR5, CR6, CR7, CR8 |
| 8 | WS2812B | LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | RGB1, RGB2, RGB3, RGB4, RGB5, RGB6, RGB7, RGB8 |
| 2 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | 22 | Resistor_SMD:R_0603_1608Metric | R5, R6 |
| 2 | 22p | Capacitor_SMD:C_0603_1608Metric | C4, C5 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R3, R4 |
| 1 | 16MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm_HandSoldering | Y1 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric | C6 |
| 1 | 4.7u | Capacitor_SMD:C_0603_1608Metric | C3 |
| 1 | 500mA | Fuse:Fuse_0603_1608Metric | F1 |
| 1 | ATMEGA32U2-AU | Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.1x3.1mm | U1 |
| 1 | PRTR5V0U2X | footprints:SOT-143B | U2 |
| 1 | SW_Push | Button_Switch_SMD:SW_SPST_CK_RS282G05A3 | SW1 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | USB1 |
The 136 most common of 137 parts.
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Questions
How big is the UT51 PCB?
It measures 257.2 × 76.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the UT51 use?
137 parts, built around the ATMEGA32U2-AU, PRTR5V0U2X and WS2812B. 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 UT51 KiCad files?
From the Kyrremann/UT51 repository on GitHub, at the commit this page was made from: the board is UT51.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the UT51 design in my own project?
Its repository states no licence, so its author keeps all rights: ask Kyrremann before reusing the design.