2 layers40 × 34 mm
2 layers97.6 × 81.8 mm
Dilpad
dillhicks/dilpad1dilpad: Hotswap Numpad/Macropad with QMK Support
- Size
- 97.6 × 81.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 37
- Nets
- 39
- Pads
- 217
- Tracks, vias
- 170, 0
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 1 Feb 2024
- Updated
- 14 Feb 2024
Overview
Dilpad is an open-source printed circuit board by dillhicks, from the dillhicks/dilpad repository on GitHub. It is a 2-layer board of 97.6 × 81.8 mm with 37 parts on 39 nets, routed with 170 tracks and 0 vias.
Its parts include 17 diodes, 2 switches, 1 IC and 1 connector. It belongs with the keyboards and input boards and the AVR (ATmega, ATtiny) boards of this library.
README
README.mddilpad: Hotswap Numpad/Macropad with QMK Support
Summary
Dilpad is a simple, easy to build numpad that is loosely based on the Dumbpad. Initially created as a fork of the Dumbpad combo_oled, but adds hotswap switches, screw holes for mounting the PCB to the case, and moved everything to the right. It was decided at that point to simply make another board to learn how to build keyboards from scratch!
This board presents a great introduction to making keyboards, and soldering to those who are new. The dilpad also sounds surprisingly good with a plate/shroud and case that resonates well. The dilpad was also designed with a little bit more space to the edges of the PCB, which can open the doors for some interesting mounting options, such as gasket mounting if anyone wants to try that.
Features
-
QMK & VIA Support
-
Hotswap Sockets
-
Rotary Encoder
-
Through-Hole Components: Designed for straightforward soldering.
Parts List
The following components are needed to build the dilpad. Costs have been added for convenience (based off of 2024 Aliexpress prices)
Mandatory Components
| Component | Quantity | Approx. Cost for 1 dilpad ($) |
|---|---|---|
| Dilpad PCB | 1 | 2.5 |
| MX-style mechanical switches | 16 | 4 |
| Kailh CPG151101S11 hotswap sockets | 16 | 3 |
| MX-style keycaps | 16 | 2.5 (or use those leftover with your keycap set!) |
| 1N4148 diodes (through-hole) | 17 | 0.5 |
| Arduino Pro Micro or a pin-compatible ATmega32u4-based MCU | 1 | 3.5 |
Optional Components
| Component | Quantity | Approx. Cost for 1 dilpad ($) |
|---|---|---|
| EC11 rotary encoder with pushbutton | 1 | 1 |
| SSD1306 OLED | 1 | 2 |
| 6mm push button | 1 | .25 |
In total, it should cost less than 25 dollars, even cheaper if you decide to forgo the OLED and rotary encoder!
Tools Needed
-
Soldering Iron
-
Flush Wire Cutters
-
Kapton Tape (to insulate the bottom of the OLED)
Assembly Instructions
I reccomend to solder the components in the following order to the starting from the back side of the PCB:
- Hotswap Sockets (insert on the back, soldered from the back)
- Diodes (insert on the front, solder from the back, then cut off diode leads)
- Arduino Pro Micro (insert on the front, solder from the back, then cut off leads)
- Rotary Encoder (insert on the front, solder from the back)
- OLED (Insert on the front, elevate over the Pro Micro, then solder from the back)
Flash Your Firmware:
- Download the .hex file included in the firmware folder, I reccomend the dilpad_via.hex file.
- Install QMK Toolbox, or another .hex flashing tool such as avrdude
- Turn on Auto-Flash in QMK Toolbox, or find what COM Port is used when the Pro Micro is reset in the next step
- Reset the Pro Micro by shorting GND and RESET, or if the 6mm button is installed, press the button
- QMK Toolbox should the flash the firmware, or start avrdude immediately after resetting, the firmware should then flash, and should be ready to go!
Case and Plate
TODO
-
Add Firmware to QMK and VIA for official support
-
Make version of shroud without rotary encoder and oled
-
Add additional tools to OLED
Parts
37| Qty | Value | Footprint | References |
|---|---|---|---|
| 17 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8, D10, D11, D12, D13, D14, D15, D16, D17 +1 |
| 16 | MX_SW_HS | PCM_marbastlib-mx:SW_MX_HS_1u | MX1, MX2, MX3, MX4, MX5, MX6, MX7, MX8, MX9, MX10, MX11, MX12, MX13, MX14, MX15, MX16 |
| 1 | Conn_01x04_Socket | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J1 |
| 1 | ProMicro | PCM_marbastlib-xp-promicroish:ProMicro_USBup | U1 |
| 1 | RotaryEncoder_Switch | PCM_marbastlib-various:ROT_Alps_EC11E-Switch | SW1 |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm_H8mm | SW2 |
Questions
How big is the Dilpad PCB?
It measures 97.6 × 81.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Dilpad use?
37 parts. 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 Dilpad KiCad files?
From the dillhicks/dilpad repository on GitHub, at the commit this page was made from: the board is dilpad.kicad_pcb and its schematic dilpad.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Dilpad design in my own project?
Its repository states no licence, so its author keeps all rights: ask dillhicks before reusing the design.
Similar boards
- 2 layers53.9 × 23.2 mm
Analog
hoglet67/RGBtoHDMI
Bare-metal Raspberry Pi project that provides pixel-perfect sampling of Retro Computer RGB/YUV video and conversion to HDMI
37 parts1kGPL-3.0 - 2 layers52 × 51.8 mm
Esp32-homeassistant rf bridge
hackclub/OnBoard
💡 Join 1,000 teenagers and make your first PCB with a $100 grant!
37 parts915 - 2 layers87.8 × 59.8 mm
FreeDeck SMD 2020-02
FreeYourStream/freedeck-hardware
all the stuff you need to build your own FreeDeck
37 parts772 - 2 layers65 × 28 mm
BMS Cell Module
stuartpittaway/diyBMS
Do it yourself battery management system for Lithium ion battery packs/cells
37 parts676GPL-3.0 - 2 layers48 × 32 mm
FlatSat
Pwnsat/FlatSat
Flatsat v1.0 is a hardware based platform for aerospace cybersecurity research
37 parts575GPL-2.0 - 2 layers38.1 × 153.7 mm
- 2 layers47.8 × 27.4 mm
Vsf stm32h7b0
vsfteam/vsf
Versaloon Software Framework -- a tiny preemptive-capable event-driven incremental software framework for embedded systems
37 parts341Apache-2.0