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Adelheid Plus

Skycode22·HIDs·Not My Projects/Not My Keyboards/adelheid-plus-main/pcb-mu/adelheid.kicad_pcb

Adelheid Plus PCB layout, top view — open source AVR/Arduino board by Skycode22
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About the Adelheid Plus PCB

Adelheid Plus is an open source AVR/Arduino PCB design by Skycode22, published on GitHub. It is a 2-layer board measuring 339.1 × 143.2 mm, with 322 components from 41 distinct parts.

Its main chip is the ATMEGA32U4-MU, from the AVR/Arduino family. Other key parts include the USBLC6-2SC6. By type, the board carries 83 diodes, 17 speakers, 13 connectors, 9 capacitors, 5 resistors and 2 ICs.

It belongs with the keyboards designs in this gallery.

From the project

HID projects

The Adelheid Plus is a fork of Flookay's Adelheid case and PCB.

- pcb: KiCad files - pcb-mu: KiCad files for Atmega32u4-MU chip (same pinout as Atmega32u4-AU, but smaller footprint) - case: High profile case files - wrist-rest: Wrist rest files

I modifed the pcb a bit to accept an Atmega32u4-MU since those seem to be in stock more often.

- USB-C connector - Option for 2U backspace - Extra B key - Option for rotary encoder at F13 position - Option for 2.25U left space + 1.25U modifier combo (requires modification to plate)

Adelheid Plus, from the project README
From the project README

Main components on the Adelheid Plus

USBLC6-2SC6ATMEGA32U4-MU

Adelheid Plus bill of materials (BOM)

322 components, 41 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
USBLC6-2SC6
U1
1
ATMEGA32U4-MU
ATmega32U4-MU
U2
1
2N7002
Q1
1
CRYSTAL_GND24
Crystal_GND24
Y1
1
USB_C_Receptacle_USB2.0
J1
1
MISO
J2
2
VCC
J3, J12
1
SCK
J4
1
MOSI
J5
1
RES
J6
2
GND
J7, J15
1
PF4
J8
1
PF5
J9
1
D+
J13
1
D-
J14
17
LED
LS1, LS2, LS3, LS4, LS5, LS6, LS7, LS8 +9
72
MX-LED
MX1, MX2, MX7, MX8, MX9, MX10, MX11, MX12 +64
5
MX-LED
MX3, MX6, MX17, MX56, MX74
2
MX-LED
MX4, MX66
1
MX-LED
MX4_1
Show 21 more
QtyPartRefs
1
MX-LED
MX5
1
MX-LED
MX17.125
1
MX-LED
MX28
2
MX-LED
MX28.225, MX70
1
MX-LED
MX45
1
MX-LED
MX78_1
1
Rotary_Encoder_Switch
RE_SW1
99
C17798
R
RL1, RL2, RL3, RL4, RL5, RL6, RL7, RL8 +91
1
R
RL34_1
2
5.1K
RU1, RU2
1
SW_Push
SWR1
82
C81598
D
D1, D2, D3, D4, D5, D6, D7, D8 +74
1
D
D34_1
2
22PF
22pF
C1, C2
1
10UF
10uF
C3
1
C28323
1uF (±10%)
C4
1
1UF
1uF
C5
4
0.1UF
0.1uF
C6, C7, C8, C9
2
22
R1, R2
2
10K
R3, R4
1
1.5K
R5

Adelheid Plus design files

The KiCad project lives in the Skycode22/HIDs repository on GitHub; these links point at the commit this page was built from.

Adelheid Plus: common questions

What microcontroller does the Adelheid Plus use?

The Adelheid Plus is built around the ATMEGA32U4-MU, from the AVR/Arduino family.

How big is the Adelheid Plus PCB?

The Adelheid Plus measures 339.1 × 143.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Adelheid Plus?

322 components, from 41 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 Adelheid Plus design files?

From the Skycode22/HIDs repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Adelheid Plus design in my own project?

The repository has no license, so all rights stay with Skycode22. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Adelheid Plus without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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