2 layers30 × 37 mm
Metronome
Bindless-Chicken/Metronome
:musical_keyboard: Tiny logic only metronome for when you are on the move
34 parts2MIT
2 layers73.8 × 63.9 mm
Kickswitch
hansliss/kickswitch2Kickstart switcher for Amiga 2000
- Size
- 73.8 × 63.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 15
- Nets
- 66
- Pads
- 174
- Tracks, vias
- 436, 16
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 22 Jun 2018
- Updated
- 13 Apr 2020
Overview
Kickswitch is an open-source printed circuit board by hansliss, from the hansliss/kickswitch repository on GitHub. It is a 2-layer board of 73.8 × 63.9 mm with 15 parts on 66 nets, routed with 436 tracks and 16 vias.
It is built around the ATMEGA328P-PU, SN74LVC1G08DBV and SN74LVC1G32. Its parts include 5 ICs, 3 capacitors, 2 connectors, 1 resistor and 1 diode. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
3
ATMEGA328P-PU
DIP-28-300mil-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH DIP-28-300mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
SN74LVC1G08DBV
SOT-23-5-40℃~+125℃ 1 1.2V、1.9V、2.3V、3.8V 1.65V~5.5V 1.7V、2V 10uA 2 300mV、450mV、550mV 32mA 32mA 4ns@5V,50pF 700mV、800mV 74LVC Series AND Gate Overvoltage-tolerant input、Rear drive protection、Level shifting、Local shutdown mode、Live insertion protection SOT-23-5 Logic Gates ROHSTexas InstrumentsLogic GatesSN74LVC1G32
UncategorisedTexas Instruments
README
README.mdkickswitch
Kickstart switcher for Amiga 2000
A switch for cramming 6 Kickstart images of different size into a single EPROM and make them switchable.
Switching is done by triggering a RESET low signal for at least two seconds, which can be done from the keyboard by holding down CTRL-Amiga-Amiga.
Note that for some models of A500, you may need pullups on the address lines: http://bax.comlab.uni-rostock.de/en/hardware/amiga500/kickstart-eprom/
A jumper is provided to select between pin 1 or 31 for A17 - older A2000 and A500 models used the wrong pin for this.
Parts
15| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 22pf | Capacitors_SMD:C_0603 | C1, C2 |
| 1 | 100nF | Capacitors_SMD:C_0603 | C3 |
| 1 | 10k | Resistors_SMD:R_0603 | R1 |
| 1 | 16MHz | Crystals:Crystal_HC49-4H_Vertical | Y1 |
| 1 | 1n4148 | Diodes_SMD:D_SOD-123F | D1 |
| 1 | 4k7 | Resistors_THT:R_Array_SIP9 | RN1 |
| 1 | 4k7 | Resistors_THT:R_Array_SIP10 | RN2 |
| 1 | ATMEGA328P-PU | Housings_DIP:DIP-28_W7.62mm | U3 |
| 1 | Conn_01x03 | Pin_Headers:Pin_Header_Straight_1x03_Pitch2.54mm | J2 |
| 1 | Conn_02x10_Odd_Even | Pin_Headers:Pin_Header_Straight_2x10_Pitch2.54mm | J1 |
| 1 | M27C160 | Housings_DIP:DIP-42_W15.24mm_Socket | U5 |
| 1 | MC23C4100_socket | Housings_DIP:DIP-40_W15.24mm_Socket | U4 |
| 1 | SN74LVC1G08 | TO_SOT_Packages_SMD:SOT-23-5 | U1 |
| 1 | SN74LVC1G32 | TO_SOT_Packages_SMD:SOT-23-5 | U2 |
Questions
How big is the Kickswitch PCB?
It measures 73.8 × 63.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Kickswitch use?
15 parts, built around the ATMEGA328P-PU, SN74LVC1G08DBV and SN74LVC1G32. 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 Kickswitch KiCad files?
From the hansliss/kickswitch repository on GitHub, at the commit this page was made from: the board is pcb/kickswitch.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Kickswitch design in my own project?
Its repository states no licence, so its author keeps all rights: ask hansliss before reusing the design.
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