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Micro mp

c04022004·micro-mp

Micro mp PCB layout, top view — open source AVR/Arduino board by c04022004

About the Micro mp PCB

Micro mp is an open source AVR/Arduino PCB design by c04022004, published on GitHub. It is a 2-layer board measuring 100 × 40 mm, with 47 components from 27 distinct parts.

Its main chip is the ProMicro, from the AVR/Arduino family. Other key parts include the MAX485E, CP2102-GMR_NRND, AT24CS01-SSHM and PCF8574. By type, the board carries 12 connectors, 11 resistors, 7 switches, 6 capacitors, 5 ICs and 5 diodes.

It belongs with the dev boards & breakouts, displays & leds and usb & debug tools designs in this gallery.

From the project

Arduino Micro Shield with additional peripherals

This is an attempt stuff functionalities onto an ATmega32U4-based board while keeping a moderate footprint and simple low-cost parts. The original version is made out of the necessity to replace dupont(jumper) wires for stability. The board gradually expanded into the current form. This is also my first few PCBs, so expect it to be less than optimal. I learnt a lot going through the design, soldering, debug process and enjoyed working on it.

Micro mp, from the project README
From the project README

Main components on the Micro mp

ProMicroMAX485ECP2102-GMR_NRNDAT24CS01-SSHMPCF8574

Micro mp bill of materials (BOM)

47 components, 27 distinct parts.

QtyPartRefs
1
ProMicro
U1
1
MAX485E
U2
1
CP2102-GMR_NRND
U3
1
AT24CS01-SSHM
U4
1
PCF8574
U5
2
Screw_Terminal_01x02
J1, J10
1
Conn_02x04_Odd_Even
J2
2
Conn_01x12_Male
J3, J5
1
Conn_02x05_Odd_Even
J4
2
Conn_01x03_Male
J6, J8
2
Conn_01x04_Female
J7, J9
1
USB_C_Receptacle_USB2.0
J11
1
Conn_01x08_Male
J12
1
Polyfuse
F1
6
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6
1
SW_DIP_x02
SW8
1
WS2812B
D1
4
RED
D2, D3, D4, D5
2
0.1uF
C1, C2
3
0.1u
C3, C5, C6
Show 7 more
QtyPartRefs
1
1u
C4
2
720R
R1, R3
1
470R
R2
1
130R
R4
3
1k
R5, R7, R8
1
220
R6
3
2k
R9, R10, R11

Micro mp design files

The KiCad project lives in the c04022004/micro-mp repository on GitHub; these links point at the commit this page was built from.

Micro mp: common questions

What microcontroller does the Micro mp use?

The Micro mp is built around the ProMicro, from the AVR/Arduino family.

How big is the Micro mp PCB?

The Micro mp measures 100 × 40 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Micro mp?

47 components, from 27 distinct parts. The full bill of materials is listed on this page.

Where can I download the Micro mp design files?

From the c04022004/micro-mp repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Micro mp design in my own project?

The repository has no license, so all rights stay with c04022004. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Micro mp 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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