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Next micro

siderakb·next-micro·hardware/next-micro.kicad_pcb

Next micro PCB layout, top view — open source AVR/Arduino board by siderakb
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About the Next micro PCB

Next micro is an open source AVR/Arduino PCB design by siderakb, published on GitHub under the MIT license. It is a 2-layer board measuring 17.8 × 33 mm, with 21 components from 13 distinct parts.

Its main chip is the C112161, from the AVR/Arduino family. Other key parts include the C47773. By type, the board carries 9 capacitors, 5 resistors, 2 ICs, 1 crystal, 1 connector and 1 fuse.

It belongs with the keyboards designs in this gallery.

From the project

A Pro Micro/Elite-C compatible ATmega32U4 board design for keyboards, has USB-C and 25 available pins.

Next μ or Next Micro** is a Pro Micro/Elite-C compatible ATmega32U4 board, specialized design for keyboards.

It has mid-mount USB Type-C and more available pins (25 pins, all pins of ATmega32U4 except PE2/HWB) than both Pro Micro (18 pins) and Elite-C (24 pins). The on-board RESET button makes development easier.

Bottom row from left to right: PD6, PD5, PC7\*, PF1, PF0.

Next micro, from the project README
From the project README

Main components on the Next micro

C112161C47773

Next micro bill of materials (BOM)

21 components, 13 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
C112161
ATmega32U4-M
U1
1
C47773
RT9013-33GB
U2
1
C115962
8MHz
Y1
1
C168688
USB_C_Receptacle_USB2.0
J1
1
C269104
500mA, 6V
F1
1
C231329
RESET
SW1
1
C123899
B5817
D1
2
C1554
20pF
C1, C2
3
C307331
100nF
C3, C6, C7
4
C52923
1uF
C4, C5, C8, C9
2
C25905
5.1k
R1, R2
2
C25092
22
R3, R4
1
C25744
10k
R5

Next micro design files

The KiCad project lives in the siderakb/next-micro repository on GitHub; these links point at the commit this page was built from.

Next micro: common questions

What microcontroller does the Next micro use?

The Next micro is built around the C112161, from the AVR/Arduino family.

How big is the Next micro PCB?

The Next micro measures 17.8 × 33 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Next micro?

21 components, from 13 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 Next micro design files?

From the siderakb/next-micro 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 Next micro design in my own project?

Yes, under the terms of its MIT license, which siderakb chose for the repository.

Can I test firmware for the Next micro 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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