2 layers219.2 × 20.9 mm
Backplane
mschuldt/control_bricks
A collection of composable PCBs for building simple automation solutions.
27 parts2
2 layers34.3 × 77.5 mm
A collection of composable PCBs for building simple automation solutions.
- Size
- 34.3 × 77.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 25
- Nets
- 45
- Pads
- 138
- Tracks, vias
- 613, 66
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 2 Nov 2018
- Updated
- 17 Dec 2018
Overview
Count is an open-source printed circuit board by mschuldt, from the mschuldt/control_bricks repository on GitHub. It is a 2-layer board of 34.3 × 77.5 mm with 25 parts on 45 nets, routed with 613 tracks and 66 vias.
It is built around the ATMEGA328-AU and LTC-4724JR. Its parts include 5 capacitors, 5 resistors, 4 switches, 3 connectors and 2 ICs. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2Parts
25| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad | H1, H2, H3, H4 |
| 3 | 1k | Resistor_SMD:R_0603_1608Metric | R5, R6, R7 |
| 2 | 0.1mf | Capacitor_SMD:C_0603_1608Metric | C4, C5 |
| 2 | 10k | Resistor_SMD:R_0603_1608Metric | R2, R4 |
| 2 | 22pf | Capacitor_SMD:C_0603_1608Metric | C2, C3 |
| 1 | 10mf | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | ATmega328-AU | Package_QFP:TQFP-32_7x7mm_P0.8mm | U1 |
| 1 | BUS | Connector_PinHeader_2.54mm:PinHeader_2x07_P2.54mm_Vertical | J5 |
| 1 | Crystal | Crystal:Crystal_SMD_HC49-SD | Y1 |
| 1 | DIODE | Diode_SMD:D_0603_1608Metric | D2 |
| 1 | FTDI | autoblocks:edge_connector_3 | J3 |
| 1 | ID | Package_DIP:DIP-16_W7.62mm_SMDSocket_SmallPads | SW6 |
| 1 | LTC-4724JR | autoblocks:LTC-4724JR | U2 |
| 1 | NEXT | Package_DIP:DIP-16_W7.62mm_SMDSocket_SmallPads | SW4 |
| 1 | bootloader | autoblocks:edge_connector_3 | J1 |
| 1 | reset | Button_Switch_SMD:SW_SPST_TL3305C | SW3 |
| 1 | resetCount | autoblocks:SW_PUSH_6mm_H5mm | SW2 |
Questions
How big is the Count PCB?
It measures 34.3 × 77.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Count use?
25 parts, built around the ATMEGA328-AU and LTC-4724JR. 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 Count KiCad files?
From the mschuldt/control_bricks repository on GitHub, at the commit this page was made from: the board is hw/count/count.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Count design in my own project?
Its repository states no licence, so its author keeps all rights: ask mschuldt before reusing the design.
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