2 layers89 × 100 mm
Hub16
joshajohnson/Hub16
A macro pad with 16 keys, two rotary encoders, a four port USB hub, and plenty of LEDs!
132 parts388
2 layers22.9 × 35.6 mm
Simple micro
Z2h-A6n/simple-microKiCad files for a simple microcontroller breakout board. Nearly a clone of the Sparkfun Pro Micro.
- Size
- 22.9 × 35.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 22
- Nets
- 38
- Pads
- 121
- Tracks, vias
- 325, 38
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 1 Jun 2017
- Updated
- 1 Jun 2017
Overview
Simple micro is an open-source printed circuit board by Z2h-A6n, from the Z2h-A6n/simple-micro repository on GitHub. It is a 2-layer board of 22.9 × 35.6 mm with 22 parts on 38 nets, routed with 325 tracks and 38 vias.
It is built around the ATMEGA32U4. Its parts include 10 capacitors, 4 connectors, 3 resistors, 1 IC and 1 crystal. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
1README
README.mdSimple Micro
KiCad files for a simple microcontroller breakout board. Nearly a clone of the Sparkfun Pro Micro
Overview
This is a simple breakout board for the Atmel ATMega32u4 microcontroller that is very closely based on the Pro Micro by Sparkfun Electonics. The primary differences between the Pro Micro and the Simple Micro are:
- The Pro Micro is physically smaller.
- The Simple Micro breaks out a few more of the I/O pins on the ATMega.
- The USB pins on the Simple Micro are broken out to through-hole pads as well as a surface-mount USB receptacle.
- The Simple Micro is cheaper (as of this writing).
- e.g. Making 3 Simple Micros with boards from OSH Park and components from DigiKey cost $34. See the example parts list.
- The Pro Micro comes pre-built.
- The Pro Micro was made by people who presumably know what they are doing, while the Simple Micro was designed by someone with no formal training in microcontroller use or PCB design.
Files in this repo
Most of the files in the repo are KiCad project files. The other files are:
- assembly.pdf
- A pdf showing the exposed pads on the bare PCB marked up with component labels to help with assembling the board.
- README.md
- This document.
Parts
22| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 0.1uF | Capacitors_SMD:C_0603 | C3, C7, C8, C9, C10 |
| 2 | 1uF | Capacitors_SMD:C_0603 | C4, C5 |
| 2 | 22 | Resistors_SMD:R_0603 | R1, R2 |
| 2 | 22pF | Capacitors_SMD:C_0603 | C1, C2 |
| 2 | CONN_01X14 | Simple_Micro:Pin_Header_Straight_1x14 | P1, P3 |
| 1 | 10K | Resistors_SMD:R_0603 | R3 |
| 1 | 10uF | Capacitors_Tantalum_SMD:Tantalum_Case-A_EIA-3216-18_Reflow | C6 |
| 1 | 16MHz | Simple_Micro:Crystal_SMD_3.2X2.5_4PAD | Y1 |
| 1 | 500mA | Fuse_Holders_and_Fuses:Fuse_SMD1206_Reflow | F1 |
| 1 | ATMEGA32U4 | Housings_QFP:TQFP-44_10x10mm_Pitch0.8mm | U1 |
| 1 | CONN_01X04 | Pin_Headers:Pin_Header_Straight_1x04 | P2 |
| 1 | SOLDER_JUMPER | Simple_Micro:Solder_Jumper | SJ1 |
| 1 | USB_B | Simple_Micro:USB_MICROB_SMD-TH | P4 |
The 21 most common of 22 parts.
Questions
How big is the Simple micro PCB?
It measures 22.9 × 35.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Simple micro use?
22 parts, built around the ATMEGA32U4. 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 Simple micro KiCad files?
From the Z2h-A6n/simple-micro repository on GitHub, at the commit this page was made from: the board is simple-micro.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Simple micro design in my own project?
Its repository states no licence, so its author keeps all rights: ask Z2h-A6n before reusing the design.
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