6 layers134 × 84.2 mm
2 layers70 × 40 mm
Microhope
expeyes/expeyes-programs18programs for expeyes and expeyes-junior
- Size
- 70 × 40 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 30
- Nets
- 49
- Pads
- 157
- Tracks, vias
- 220, 12
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 17 Aug 2012
- Updated
- 22 May 2026
Overview
Microhope is an open-source printed circuit board by expeyes, from the expeyes/expeyes-programs repository on GitHub. It is a 2-layer board of 70 × 40 mm with 30 parts on 49 nets, routed with 220 tracks and 12 vias.
It is built around the CH340G and ATMEGA32U4. Its parts include 9 capacitors, 8 connectors, 4 resistors, 2 ICs and 2 diodes. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2README
README.mdexpeyes-programs
programs for expeyes and expeyes-junior
how to build all the programs:
some files are easily generated from sources and are not distributed in this repository.
In order to build all necessary files (including translations, and others),
one can run make from the topmost directory.
Parts
30| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | .1u | MyLib:C_0805 | C3, C4, C5, C6, C7, C8 |
| 4 | CONN_10 | MyLib:Pin_Header_Straight_1x10-oval | P1, P3, P4, P5 |
| 3 | 5K1 | MyLib:R_0805 | R2, R3, R4 |
| 2 | 15pF | MyLib:C_0805 | C1, C2 |
| 2 | LED | MyLib:C_0805 | D1, D2 |
| 2 | TST | MyLib:MountingHole-3mm | P2, P7 |
| 1 | 0.5A | MyLib:Fuse-1206-1812 | F1 |
| 1 | 10K | MyLib:R_0805 | R1 |
| 1 | 12M | MyLib:xtl-3225-3pin | X2 |
| 1 | 1u | MyLib:C_0805 | C9 |
| 1 | 8MHz | MyLib:Crystal_HC49-U_Vertical | X1 |
| 1 | ATMEGA32 | DIP-sockets:DIP-40__600 | U1 |
| 1 | CH340G | MyLib:SOIC-16_3.9x9.9mm_Pitch1.27mm | U2 |
| 1 | CONN_5 | MyLib:myPin_Header_Straight_1x05 | P6 |
| 1 | PCRST | MyLib:myPin_Header_Straight_1x02 | JP1 |
| 1 | RESET | MyLib:myPin_Header_Straight_1x02 | SW1 |
| 1 | USB | MyLib:USB_Micro-B-THsupport-2 | J1 |
Questions
How big is the Microhope PCB?
It measures 70 × 40 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Microhope use?
30 parts, built around the CH340G and 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 Microhope KiCad files?
From the expeyes/expeyes-programs repository on GitHub, at the commit this page was made from: the board is kuttyPy/hardware/microhope.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Microhope design in my own project?
Its repository states no licence, so its author keeps all rights: ask expeyes before reusing the design.
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