2 layers38.1 × 25.4 mm
2 layers27.9 × 27.9 mm
Tiny84EncoderReader
UserHackable/RotaryEncoderRotaryEncoder
- Size
- 27.9 × 27.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 13
- Nets
- 17
- Pads
- 51
- Tracks, vias
- 113, 3
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 8 Apr 2016
- Updated
- 20 Jul 2026
Overview
Tiny84EncoderReader is an open-source printed circuit board by UserHackable, from the UserHackable/RotaryEncoder repository on GitHub. It is a 2-layer board of 27.9 × 27.9 mm with 13 parts on 17 nets, routed with 113 tracks and 3 vias.
It is built around the ATTINY84A-PU. Its parts include 2 resistors, 1 IC, 1 connector and 1 switch. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
1README
README.mdTiny84EncoderReader
Board dimensions
- (110000, 110000) original units
- (1.1000, 1.1000) inches
- (27.9400, 27.9400) mm
| Front | Back |
|---|---|
 |  |
TinyEncoderReader
Board dimensions
- (150000, 100000) original units
- (1.5000, 1.0000) inches
- (38.1000, 25.4000) mm
| Front | Back |
|---|---|
 |  |
Parts
13| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 100 | 0805 | B0, G0 |
| 1 | 1X05 | JP2 | |
| 1 | dummyfp1 | UNK_HOLE_1 | |
| 1 | ENCODER_LED_3 | SW1 | |
| 1 | dummyfp0 | UNK_HOLE_0 | |
| 1 | dummyfp2 | UNK_HOLE_2 | |
| 1 | 1X04 | JP1 | |
| 1 | dummyfp3 | UNK_HOLE_3 | |
| 1 | 10k | 0805 | R1 |
| 1 | 150 | 0805 | R0 |
| 1 | ATTINY84 | SO14 | U1 |
| 1 | ICSP | 2X3-NS | J1 |
Questions
How big is the Tiny84EncoderReader PCB?
It measures 27.9 × 27.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Tiny84EncoderReader use?
13 parts, built around the ATTINY84A-PU. 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 Tiny84EncoderReader KiCad files?
From the UserHackable/RotaryEncoder repository on GitHub, at the commit this page was made from: the board is KiCad/Tiny84EncoderReader/Tiny84EncoderReader.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Tiny84EncoderReader design in my own project?
Its repository states no licence, so its author keeps all rights: ask UserHackable before reusing the design.
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