FocusBeam
About the FocusBeam PCB
FocusBeam is an open source ESP32 PCB design by StuckAtPrototype, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 120 × 25 mm, with 66 components from 20 distinct parts.
Its main chip is the ESP32-H2-MINI-1, from the ESP32 family. Other key parts include the AP2205. By type, the board carries 22 capacitors, 22 resistors, 10 LEDs, 6 switches, 2 ICs and 1 transistor.
It belongs with the iot & wireless designs in this gallery.
From the project
A compact Pomodoro timer device with visual LED progress bar, tactile button controls, and audio feedback. Designed to help you stay focused and productive.
A compact Pomodoro timer device with visual LED progress bar, tactile button controls, and audio feedback. Designed to help you stay focused and productive.
- Visual Progress Bar: 10 WS2812 addressable RGB LEDs show timer progress - 5 Preset Durations: Quick-select buttons for 5, 15, 30, 45, and 60 minute focus sessions - Audio Feedback: Piezo buzzer for startup jingle, completion notification, and alert sounds - Intuitive States: Color-coded LED feedback for different timer states - USB-C Powered: Modern, reversible connector for easy power - Compact Design: Custom PCB with 3D-printable…
Main components on the FocusBeam
FocusBeam bill of materials (BOM)
66 components, 20 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AP2205 | AP2204 | U6 |
| 1 | ESP32-H2-MINI-1 | MODULE_ESP32-H2-MINI-1-H2 | U7 |
| 1 | BSS138 | SOT-23 | Q1 |
| 1 | USB_C_Plug_USB2.0 | GCT_USB4105-GF-A | P1 |
| 1 | SMT1240SHT | SMT1240SHT | LS1 |
| 1 | SWITCH_0SMTRLFS | SWITCH_0SMTRLFS | S2 |
| 5 | TL1016AAF220QG | TL1016AAF220QG | S3, S4, S5, S6, S7 |
| 10 | IN-PI15TAT5R5G5B | IN-PI15_INL | LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8 +2 |
| 1 | TPD1E10B06 | D_SOD-523 | D5 |
| 1 | 47uF | C_0603_1608Metric | C9 |
| 1 | 1uF | C_0603_1608Metric | C10 |
| 18 | 0.1uF | C_0603_1608Metric | C11, C12, C13, C16, C17, C18, C19, C20 +10 |
| 2 | 10uF | C_0603_1608Metric | C21, C22 |
| 9 | 10k | R_0603_1608Metric | R1, R4, R11, R12, R20, R24, R26, R28 +1 |
| 1 | 470 | R_0603_1608Metric | R5 |
| 2 | 1M | R_0603_1608Metric | R16, R31 |
| 2 | 5K1 | R_0603_1608Metric | R17, R18 |
| 5 | 100k | R_0603_1608Metric | R19, R23, R25, R27, R29 |
| 2 | 22 | R_0603_1608Metric | R21, R22 |
| 1 | 100 | R_0603_1608Metric | R32 |
FocusBeam design files
The KiCad project lives in the StuckAtPrototype/FocusBar repository on GitHub; these links point at the commit this page was built from.
FocusBeam: common questions
What microcontroller does the FocusBeam use?
The FocusBeam is built around the ESP32-H2-MINI-1, from the ESP32 family.
How big is the FocusBeam PCB?
The FocusBeam measures 120 × 25 mm, has 2 copper layers and is 1.66 mm thick.
How many components are on the FocusBeam?
66 components, from 20 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 FocusBeam design files?
From the StuckAtPrototype/FocusBar 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 FocusBeam design in my own project?
Yes, under the terms of its Apache-2.0 license, which StuckAtPrototype chose for the repository.
Can I test firmware for the FocusBeam without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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