2 layers99.1 × 99.1 mm
Power supply panelized
thebiguno/microcontroller-projects
A home for a bunch of microcontroller projects which don't warrant their own repos.
223 parts75
2 layers49.4 × 34.2 mm
Microsd append
thebiguno/microcontroller-projects75A home for a bunch of microcontroller projects which don't warrant their own repos.
- Size
- 49.4 × 34.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 50
- Nets
- 57
- Pads
- 212
- Tracks, vias
- 615, 70
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 3
- Created
- 20 Nov 2014
- Updated
- 6 Jul 2024
Overview
Microsd append is an open-source printed circuit board by thebiguno, from the thebiguno/microcontroller-projects repository on GitHub. It is a 2-layer board of 49.4 × 34.2 mm with 50 parts on 57 nets, routed with 615 tracks and 70 vias.
It is built around the ATMEGA32U4-AU, 74LS125DC and DFLS130L. Its parts include 13 connectors, 8 resistors, 7 capacitors, 3 diodes and 2 ICs. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
3
ATMEGA32U4-AU
QFP-44(10x10)-40℃~+85℃ 10bit 16MHz 1KB 2.5KB 2.7V~5.5V 26 32KB 8 Bit AVR Built-in FLASH QFP-44(10x10) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)74LS125DC
-0℃~+70℃ 1 10ns@5.5V,50pF 15mA 18mA 24mA 4 4.5V~5.5V 74LS Power-off isolation、Output enable Tri-State Unidirectional - Buffers, Drivers, Receivers, TransceiversTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
DFLS130L
PowerDI-123-40℃~+125℃ 1 Independent 1A 1mA@30V 30V 310mV@1A 50A PowerDI-123 Schottky Diodes ROHSDiodes IncorporatedSchottky Diodes
README
README.mdmicrocontroller-projects
A home for my microcontroller projects, including Stubby the Hexapod and others. It includes libraries for avr-gcc along with sample programs on how to use them, some KiCad modules, and the source code for a number of projects.
Some major projects include:
- Stubby the Hexapod (http://stubby.digitalcave.ca/stubby/) (Now extracted into its own repo at https://github.com/thebiguno/stubby)
- DrumMaster (http://drummaster.digitalcave.ca/drummaster/)
- Chiindii (http://chiindii.digitalcave.ca/chiindii/)
Some of the AVR libraries included here are:
- serial communications
- TWI (I2C), with support for master read / master write / slave read / slave write, plus callback functions for asyncronous communications
- reading data from a PS2 controller
- timer functions
- and much more
Parts
50| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | CONN_5 | PIN_ARRAY_5x1 | P2, P3, P4, P5, P6, P7 |
| 5 | 1k | SM0603_VALUE | R4, R5, R6, R7, R8 |
| 3 | 1uF | SM0603_VALUE | C3, C4, C5 |
| 3 | VAL** | mouse_bites | mouse_bites, mouse_bites, mouse_bites |
| 2 | 1u | SM0603_VALUE | C1, C2 |
| 2 | 22 | SM0603_VALUE | R2, R3 |
| 2 | CONN_2 | PIN_ARRAY_2X1 | P1, P2 |
| 2 | NCP1400A | SOT23-5 | VR1, VR1 |
| 2 | P*** | 1pin | 1PIN, 1PIN |
| 2 | SW_PUSH_SMALL | SW_6x3 | SW1, SW2 |
| 1 | 10k | SM0603_VALUE | R1 |
| 1 | 10uF | SM0805 | C1 |
| 1 | 22uH | SM1007 | L1 |
| 1 | 47uF | SM1206POL | C2 |
| 1 | 74LS125 | SSOP-14 | U1 |
| 1 | ATMEGA32U4-A | TQFP44 | U1 |
| 1 | CONN_13 | 475710001 | P2 |
| 1 | CONN_5 | SIL-5 | P1 |
| 1 | CONN_8 | SIL-8 | P1 |
| 1 | DFLS130L | POWERDI_123 | D1 |
| 1 | DIGITALCAVE_AUTHOR | DIGITALCAVE_AUTHOR | VAL |
| 1 | ISP | ISP_EDGE | P1 |
| 1 | MCP1702 | SOT23 | VR1 |
| 1 | REF | DIGITALCAVE_LOGO | VAL |
| 1 | RESONATOR | RESONATOR_SMD-3 | X1 |
| 1 | RGB_LED_COMMON_ANODE | LED_RGB_4-PLCC_ALT1 | D2 |
| 1 | RGB_LED_COMMON_ANODE_ALT1 | LED_RGB_4-PLCC_ALT1 | D1 |
| 1 | USB-MINI-B | USB_MINI_B_fixed | CON1 |
| 1 | VAL** | WJ10 | WJ10 |
| 1 | VAL** | DIGITALCAVE_URL | DIGITALCAVE_URL |
| 1 | Val** | PIN_ARRAY_4x1 | PIN_ARRAY_4X1 |
Questions
How big is the Microsd append PCB?
It measures 49.4 × 34.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Microsd append use?
50 parts, built around the ATMEGA32U4-AU, 74LS125DC and DFLS130L. 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 Microsd append KiCad files?
From the thebiguno/microcontroller-projects repository on GitHub, at the commit this page was made from: the board is projects/microsd/microsd-append.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Microsd append design in my own project?
Its repository states no licence, so its author keeps all rights: ask thebiguno before reusing the design.
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