4 layers234 × 84 mm
Main panel
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
234 parts3kApache-2.0
2 layers12 × 60 mm
PomoClockBar
LeonEcke/pomoljusPomoljus is a programmable sequential interval timer with a light based alert method. In other words, its a clock aimed to function in a way inspired by the Pomodoro technique using only RGB LEDs.
- Size
- 12 × 60 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 20
- Nets
- 14
- Pads
- 61
- Tracks, vias
- 142, 19
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 12 Aug 2023
- Updated
- 3 Jun 2024
Overview
PomoClockBar is an open-source printed circuit board by LeonEcke, from the LeonEcke/pomoljus repository on GitHub. It is a 2-layer board of 12 × 60 mm with 20 parts on 14 nets, routed with 142 tracks and 19 vias.
It is built around the SK6812MINI-E. Its parts include 6 capacitors, 5 resistors, 5 diodes, 2 switches and 1 transistor.
Main components
1README
README.mdPomoljus Interval Timer
Pomoljus is a programmable sequential interval timer with a light based alert method. In other words, its a clock aimed to function in a way inspired by the Pomodoro technique using only RGB LEDs.
Milestones
The development of the Pomoljus is slow and is lead by a single slow person. To keep the development pointing in the correct direction a series of more achievable milestones have are listed below. This can also give an idea of where the development of this project is.
[Insert PBI]
Here is a rough estimation of the three major areas of the Pomoljus development.
- Firmware
- ▰▰▱▱▱▱▱▱▱▱▱▱▱▱▱▱▱▱▱▱ [10%]
- Electrical
- ▰▰▰▰▰▱▱▱▱▱▱▱▱▱▱▱▱▱▱▱ [25%]
- Housing
- ▱▱▱▱▱▱▱▱▱▱▱▱▱▱▱▱▱▱▱▱ [00%]
Support
If you wish to shout encouraging words at me then you can find me at @bpall@mstdn.social. You can also find my blog/project hub over at bPall.se .
More
My blog post about the initial concept generation.
Getting it running
The Pomoljus is designed to run on an RP2040 using the Raspberry Pi Pico C/C++ SDK. The LEDs are SK6812Minis. It's all mounted on custom designed PCBs created using KiCad. The housing is designed in [TBD].
Firmware files are found in /firmware/. Electrical diagrams and PCB design files are found in /pcb/. Housing and mechanical designs will live in /cad/.
Building firmware from source
[Insert instructions on how to build...]
Parts
20| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 104 | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C3, C4, C5, C6 |
| 5 | SK6812MINI | LED_SMD:LED_SK6812MINI_PLCC4_3.5x3.5mm_P1.75mm | D1, D2, D3, D4, D5 |
| 3 | 5k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R4, R5 |
| 2 | 3.3k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R3 |
| 2 | SW_SPST | CustomFootprints:MyButton | SW1, SW2 |
| 1 | 103 | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1 |
| 1 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | Conn_01x06 | Connector_JST:JST_SH_SM06B-SRSS-TB_1x06-1MP_P1.00mm_Horizontal | J1 |
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Questions
How big is the PomoClockBar PCB?
It measures 12 × 60 mm and has 2 copper layers, 1.6 mm thick.
What parts does the PomoClockBar use?
20 parts, built around the SK6812MINI-E. 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 PomoClockBar KiCad files?
From the LeonEcke/pomoljus repository on GitHub, at the commit this page was made from: the board is pcb/PomoClockBar/PomoClockBar.kicad_pcb and its schematic pcb/PomoClockBar/PomoClockBar.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the PomoClockBar design in my own project?
Its repository states no licence, so its author keeps all rights: ask LeonEcke before reusing the design.