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Numpad TMR1

livid05·ProofOfConcept·schematics/numpad_tmr1/Numpad_TMR1.kicad_pcb

Numpad TMR1 PCB layout, top view — open source board by livid05

About the Numpad TMR1 PCB

Numpad TMR1 is an open source PCB design by livid05, published on GitHub. It is a 2-layer board measuring 81 × 85.7 mm, with 95 components from 8 distinct parts.

Other key parts include the TMR2615F. By type, the board carries 15 ICs, 15 LEDs, 15 diodes, 4 resistors and 1 connector.

It belongs with the keyboards, iot & wireless and dev boards & breakouts designs in this gallery.

From the project

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A custom 4×4 keypad with rotary encoder and per-key RGB, built on an RP2040, that transmits keystrokes wirelessly to a PC via either BLE (Bluetooth Low Energy) or a 2.4 GHz proprietary radio link using a Nordic nRF52840 bridge board.

Hardware path: RP2040 keypad → UART (GP0) → TENSTAR nRF52840 → BLE or 2.4 GHz → PC

1. Project Overview 2. Hardware 3. Repository Structure 4. System Architecture 5. Wireless Protocol 6. QMK Firmware (RP2040) 7. BLE Bridge (blebridge) 8. 2.4 GHz ESB Bridge + Dongle (esbbridge / esb_dongle) 9. Keymap & Layers 10. RGB Matrix 11. Rotary Encoder 12. HC4067 Analog…

Main components on the Numpad TMR1

TMR2615F

Numpad TMR1 bill of materials (BOM)

95 components, 8 distinct parts — part numbers from the project's BOM.

QtyPartRefs
15
TMR2615F
U1, U2, U3, U4, U5, U6, U7, U8 +7
1
CONN_01X30_PIN
Conn_01x30_Pin
J1
30
0.1UF
0.1uF
CL2, CL3, CL4, CL5, CL6, CL7, CL8, CL9 +22
15
MX_SW_HS
MX1, MX2, MX3, MX4, MX5, MX6, MX7, MX8 +7
15
SK6812MINI-E
LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8 +7
15
D_Small
D1, D2, D3, D4, D5, D6, D7, D8 +7
1
330
R1
3
10K
10k
R2, R3, R4

Numpad TMR1 design files

The KiCad project lives in the livid05/ProofOfConcept repository on GitHub; these links point at the commit this page was built from.

Numpad TMR1: common questions

How big is the Numpad TMR1 PCB?

The Numpad TMR1 measures 81 × 85.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Numpad TMR1?

95 components, from 8 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 Numpad TMR1 design files?

From the livid05/ProofOfConcept 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 Numpad TMR1 design in my own project?

The repository has no license, so all rights stay with livid05. Use it as a reference, and ask the author before reusing the design.

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