2 layers275.7 × 105.3 mm
Hector
RickKross/hector
Hector is a 38-key column staggered keyboard with HE magnetic sensors
224 parts18CERN-OHL-W-2.0
2 layers287 × 138 mm
Harmora
rbarbier-p/Harmora1- Size
- 287 × 138 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 204
- Nets
- 201
- Pads
- 859
- Tracks, vias
- 1,963, 218
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 2 Dec 2025
- Updated
- 14 May 2026
Overview
Harmora is an open-source printed circuit board by rbarbier-p, from the rbarbier-p/Harmora repository on GitHub. It is a 2-layer board of 287 × 138 mm with 204 parts on 201 nets, routed with 1,963 tracks and 218 vias.
It is built around the ATMEGA32U4-AU, ATMEGA328P-AU and SS49E, with the USBLC6-2SC6, 74AC151SC and 74LVC1G157GV among its other parts. Its parts include 61 capacitors, 36 resistors, 27 diodes, 15 ICs and 9 connectors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
7
ATMEGA32U4-AU
QFP-44(10x10)-40℃~+85℃ 10bit 16MHz 1KB 2.5KB 2.7V~5.5V 26 32KB 8 Bit AVR Built-in FLASH QFP-44(10x10) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
ATMEGA328P-AU
TQFP-32(7x7)-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH TQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
SS49E
TO-92S-0.7% -40℃~+100℃ 1.4mV/Gs 2.7V~6.5V 6mA ±100mT TO-92S Linear Hall Sensors ROHSHoneywellLinear Hall Sensors
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
74AC151SC
SOIC-16-40℃~+85℃ 24mA 24mA 2V~6V 40uA 74AC 8.5ns@5V,50pF Single Supply SOIC-16 Signal Switches, Multiplexers, Decoders ROHSonsemiSignal Switches, Multiplexers, Decoders
74LVC1G157GV
TSOP-6-1.5mm-40℃~+125℃ 1.65V~5.5V 2.7ns@3.3V,50pF 2/1 32mA 32mA 4uA 74LVC Multiplexer Power-off protection、Level shifting Single Supply TSOP-6-1.5mm Signal Switches, Multiplexers, Decoders ROHSNexperiaSignal Switches, Multiplexers, Decoders
CD74HC4067M
SOIC-24-300mil-55℃~+125℃ 16 160Ω 16:1 22ns 2V~6V 345ns 365ns 89MHz Bidirectional analog channel、Glitch-free switching SOIC-24-300mil Analog Switches, Multiplexers ROHSTexas InstrumentsAnalog Switches, Multiplexers
Parts
204| Qty | Value | Footprint | References |
|---|---|---|---|
| 50 | 100nF | Footprints:0603_C | C1, C2, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23 +34 |
| 26 | APA102 | Footprints:APA102 LED | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +10 |
| 25 | ~ | Footprints:Mechanical Switch | B1, B2, B10, B11, B12, B13, B14, B15, B16, B17, B18, B19, B20, B21, B22, B23 +9 |
| 17 | 10k | Footprints:0603_R | R14, R15, R16, R17, R18, R25, R26, R27, R28, R29, R30, R31, R32, R33, R34, R35 +1 |
| 12 | SS49E | Footprints:SLSS49E-3 Hall Sensor (SOT-23-3) | U1, U2, U3, U4, U5, U6, U7, U8, U9, U10, U11, U12 |
| 6 | 330 | Footprints:0603_R | R19, R20, R21, R22, R23, R24 |
| 6 | ~ | Footprints:Rotary Encoder EC11E | EN1, EN2, EN3, EN4, EN5, EN6 |
| 5 | 2.2k | Footprints:0603_R | R1, R2, R3, R4, R5 |
| 4 | 10k | Footprints:Rotary Potentiometer RK09 | P1, P2, P3, P4 |
| 4 | 22 | Footprints:0603_R | R10, R11, R12, R13 |
| 4 | 22pF | Footprints:0603_C | C77, C78, C79, C80 |
| 4 | 5.1k | Footprints:0603_R | R6, R7, R8, R9 |
| 3 | 1uF | Footprints:0603_C | C73, C74, C76 |
| 3 | 22uF | Footprints:C_Electrolytic_4x5.4 | C70, C71, C72 |
| 3 | ~ | Footprints:MTS-102 Switch | S1, S2, S3 |
| 2 | 16Mhz | Footprints:Crystal Oscillator 16MHz | Y1, Y2 |
| 2 | 74AC151SC | Footprints:74AC151SC SOIC-16 8_1 MUX | DM2, DM3 |
| 2 | ~ | Footprints:MCP23017 GPIO Expander | EX1, EX2 |
| 2 | ~ | Footprints:ISP port | J2, J3 |
| 1 | 128x64 2.42 inc | Footprints:SPI Screen PinHeader | J5 |
| 1 | 1nF | Footprints:0603_C | C75 |
| 1 | 500mA | Footprints:Resettable Fuse 1206 | F1 |
| 1 | 600Ω@100MHz | Footprints:0603_FB | FB1 |
| 1 | 74LVC1G157 | Footprints:74LVC1G157 SOT-363 2_1 MUX | DM1 |
| 1 | ATMEGA32U4-AU | Footprints:ATMEGA32U4-AU | U15 |
| 1 | ATmega328p-AU | Footprints:ATMEGA328P-AU | U14 |
| 1 | CD74HC4067M | Footprints:CD74HC4067M Analog Mux (SOIC-24) | AM1 |
| 1 | JST-EH | Footprints:JST-EH port | J4 |
| 1 | USBC | Footprints:USB C Receptacle USB2.0 16PIN | J1 |
| 1 | USBLC6-2SC6 | Footprints:ESD Prot SOT-23-6 | U16 |
| 1 | ~ | Footprints:TVS Diode SOD-123FL | D27 |
The 192 most common of 204 parts.
Questions
How big is the Harmora PCB?
It measures 287 × 138 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Harmora use?
204 parts, built around the ATMEGA32U4-AU, ATMEGA328P-AU, SS49E and USBLC6-2SC6. 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 Harmora KiCad files?
From the rbarbier-p/Harmora repository on GitHub, at the commit this page was made from: the board is PCB/Harmora.kicad_pcb and its schematic PCB/Harmora.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Harmora design in my own project?
Its repository states no licence, so its author keeps all rights: ask rbarbier-p before reusing the design.
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