2 layers203.2 × 135.9 mm
2 layers61.3 × 101.4 mm
Flashpad
str-dst/USBasp-MultiPad4This work is licensed under a [Creative Commons Attribution-ShareAlike 4.0 International License][cc-by-sa].
- Size
- 61.3 × 101.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 30
- Nets
- 81
- Pads
- 158
- Tracks, vias
- 292, 0
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 16 Jun 2020
- Updated
- 16 Aug 2021
Overview
Flashpad is an open-source printed circuit board by str-dst, from the str-dst/USBasp-MultiPad repository on GitHub, published under the CC-BY-SA-4.0 licence. It is a 2-layer board of 61.3 × 101.4 mm with 30 parts on 81 nets, routed with 292 tracks and 0 vias.
It is built around the ATMEGA328P-PU, ATMEGA32A-PU and ATMEGA8A-PU. Its parts include 7 capacitors, 7 resistors, 3 ICs, 2 diodes and 2 crystals. 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)
ATMEGA32A-PU
DIP-40-40℃~+85℃ 10bit 16MHz 1KB 2.7V~5.5V 2KB 32 32KB 8 Bit AVR Built-in FLASH DIP-40 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)ATMEGA8A-PU
DIP-28-300mil-40℃~+85℃ 10bit 16MHz 1KB 2.7V~5.5V 23 512Byte 8 Bit 8KB AVR Built-in FLASH DIP-28-300mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
README
README.mdUSBasp MultiPad
USBasp flasher for Atmega32a and Atmega328p
Partslist
Most of the parts in this list are just examples and they can be replaced with any component with the same specs.
They don't have to be from any specific manufacturer or brand to work on this board.
| Count | Part | Designator | Octopart URL |
|---|---|---|---|
| 1 | ATmega8-16pu 28-pin DIP | U1 | Atmega8-16pu |
| 1 | 28 pin DIP socket (optional but highly recommended) | U1 | TE Connectivity 1-2199298-9 |
| 1 | 2x5 pin header 2.54mm (optional) | AVR | Würth 61201021621 |
| 1 | USB Type-B receptacle | USB1 | Molex 67068-8000 |
| 1 | 500 mA polyfuse | F1 | Bourns MF-R050 |
| 1 | 12 MHz quarz crystal | X1 | CTS ATS120 |
| 1 | 16 MHz quarz crystal | X2 | CTS ATS160 |
| 1 | 4.7 uF electrolytic capacitor | C1 | Panasonic ECA-1HM4R7I |
| 2 | 100 nF ceramic disk capacitor | C2, C3 | Kemet C315C104M5U5TA |
| 4 | 22 pF ceramic disk capacitor | C4, C5, C6, C7 | Kemet C317C220J1G5TA |
| 2 | 10 kΩ resistor | R2, R5 | Multicomp MF25 10k |
| 2 | 68 Ω resistor | R3, R4 | Multicomp MF25 68R |
| 3 | 1.5 kΩ resistor | R1, R6, R7 | Multicomp MF25 1k5 |
| 2 | 5mm LEDs | ACT, PWR | Vishay TLHG5400 |
| 2 | 3.6 V zener diode (DO-35 BZX55C3V6) | D1, D2 | ON Semiconductor BZX85C3V6 |
| 1 | 40-pin ZIF socket (15.24mm row spacing) | U2 | 3M Textool 240-3345 (or equivalent) |
| 1 | 28-pin ZIF socket (7.62mm row spacing) | U3 | 3M Textool 228-3341 (or equivalent) |
PCB preview
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Parts
30| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 22p | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C4, C5, C6, C7 |
| 2 | 1.5K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6, R7 |
| 2 | 100n | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm | C2, C3 |
| 2 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R5 |
| 2 | 3.6V | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2 |
| 2 | 68R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3, R4 |
| 2 | LED | LED_THT:LED_D5.0mm | ACT, PWR |
| 1 | 1.5k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2 |
| 1 | 12Mhz | Crystal:Crystal_HC49-4H_Vertical | X1 |
| 1 | 16Mhz | Crystal:Crystal_HC49-4H_Vertical | X2 |
| 1 | 4.7u | Capacitor_THT:CP_Radial_D4.0mm_P2.00mm | C1 |
| 1 | ATmega328P-PU | custom_parts:socket28dip | U3 |
| 1 | ATmega32A-PU | custom_parts:socket40dip | U2 |
| 1 | ATmega8A-PU | Package_DIP:DIP-28_W7.62mm | U1 |
| 1 | AVR-ISP-10 | Connector_IDC:IDC-Header_2x05_P2.54mm_Vertical | AVR |
| 1 | LOGO | custom_parts:elmo | G*** |
| 1 | Polyfuse | Fuse:Fuse_Littelfuse_395Series | F1 |
| 1 | SelfProg | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | SlowSCK | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP2 |
| 1 | USB_B | Connector_USB:USB_B_OST_USB-B1HSxx_Horizontal | USB1 |
The 29 most common of 30 parts.
Questions
How big is the Flashpad PCB?
It measures 61.3 × 101.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Flashpad use?
30 parts, built around the ATMEGA328P-PU, ATMEGA32A-PU and ATMEGA8A-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 Flashpad KiCad files?
From the str-dst/USBasp-MultiPad repository on GitHub, at the commit this page was made from: the board is flashpad.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Flashpad design in my own project?
Its repository publishes it under the CC-BY-SA-4.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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