
C64-Switchless Quad Kernal Switcher
bwack/C64-Switchless-Multi-Kernal-27C256-adapter
Kernal switcher for the C64/C64C/C128

PCB designed to toggle lights on or off in a lending library. Based on an ATTINY85
LightBoard is an open-source printed circuit board by stuenkels, from the stuenkels/LendingLibrary-LightingController repository on GitHub. It is a 2-layer board of 47 × 43.8 mm with 28 parts on 18 nets, routed with 67 tracks and 9 vias.
It is built around the ATTINY85-20PU. Its parts include 11 resistors, 7 connectors, 5 transistors and 1 IC. It belongs with the AVR (ATmega, ATtiny) boards of this library.
This simple controller based off of an ATTINY85 was designed to control lights within a lending library. It may be simple but it works.
Top of the board

Bottom of the board

Finished Installment

| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | R_Small | Resistor_SMD:R_0805_2012Metric | R1, R2, R3, R4, R5, R7, R8, R9, R10, R11, R12 |
| 7 | Screw_Terminal_01x02 | TerminalBlock:TerminalBlock_Altech_AK300-2_P5.00mm | J1, J2, J3, J4, J5, J6, J7 |
| 5 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q4, Q5, Q6 |
| 1 | ATtiny85-20P | Package_DIP:DIP-8_W7.62mm | U1 |
The 24 most common of 28 parts.

bwack/C64-Switchless-Multi-Kernal-27C256-adapter
Kernal switcher for the C64/C64C/C128

plusvic/simplebus2-intercom
General description of the Simplebus2 protocol used by some Comelit's intercoms. Hardware for retransmitting Simplebus2 messages over UART.

osmocom/osmocom-analog
Software Implementation of analog cellular telephony systems like NMT, TACS, IMTS, A/B/C-Netz; mirror of https://gitea.osmocom.org/cellular-infrastructure/osmocom-analog

strickyak/jerboa-attiny85-mod-synth
Modular Synthesizer using an ATtiny85 chip for each module.


Hack-a-Day/Remoticon_KiCad_Blender
support files for the 2020 Remoticon KiCad to Blender > PCB renders workshop

It measures 47 × 43.8 mm and has 2 copper layers, 1.6 mm thick.
28 parts, built around the ATTINY85-20PU. 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.
From the stuenkels/LendingLibrary-LightingController repository on GitHub, at the commit this page was made from: the board is KiCad/lightBoard.kicad_pcb and its schematic KiCad/lightBoard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask stuenkels before reusing the design.