2 layers75 × 95 mm
6 layers50 × 50 mm
Hardware of the librecalc project
- Size
- 50 × 50 mm
- Copper layers
- 6
- Thickness
- 1.6 mm
- Parts
- 118
- Nets
- 220
- Pads
- 688
- Tracks, vias
- 5,334, 394
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 18 Dec 2015
- Updated
- 18 Dec 2015
Overview
Calc is an open-source printed circuit board by pparent76, from the pparent76/Librecalc-Hardware repository on GitHub. It is a 6-layer board of 50 × 50 mm with 118 parts on 220 nets, routed with 5,334 tracks and 394 vias.
It is built around the PIC16F722A-I/SS, FT230XQ-R and JUMPER-2.0/B. Its parts include 67 capacitors, 24 resistors, 7 ICs, 7 connectors and 5 diodes. It belongs with the PIC boards of this library.
Main components
3
PIC16F722A-I/SS
SSOP-28-208mil-40℃~+85℃ 1.8V~5.5V 128Byte 20MHz 25 3.5KB 8 Bit 8bit Built-in FLASH PIC SSOP-28-208mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
FT230XQ-R
QFN-16-EP(4x4)-40℃~+85℃ 125uA 3.3V~5V 8mA USB 2.0 USB to UART QFN-16-EP(4x4) USB Converters ROHSFTDIUSB ConvertersJUMPER-2.0/B
-- Lack of specifications ROHSNINIGIUncategorised
Parts
118| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | 22uF | SM0805 | C16, C17, C20, C21, C22, C24, C25, C39, C42, C44, C48, C50, C51, C52, C53, C54 +2 |
| 17 | 100nF | SM0603 | C19, C26, C28, C29, C31, C34, C37, C40, C43, C45, C46, C49, C55, C58, C64, C65 +1 |
| 9 | 100nf | SM0603 | C18, C23, C27, C30, C32, C36, C38, C41, C59 |
| 6 | 1uF | SM0603 | C33, C35, C47, C56, C57, C66 |
| 5 | 100nf | SM0603_Capa | C1, C2, C3, C4, C14 |
| 5 | 47k | SM0805 | R13, R14, R15, R16, R17 |
| 4 | 100nF | SM0603_Capa | C11, C12, C13, C15 |
| 4 | 10k | SM0805 | R1, R2, R5, R21 |
| 4 | 10pf | SM0603_Capa | C5, C6, C7, C8 |
| 4 | 1k(1%) | SM0805 | R3, R4, R6, R7 |
| 3 | 100 | SM0805 | R8, R10, R18 |
| 3 | 4.7k | SM0805 | R9, R11, R12 |
| 3 | LED | LED-0805 | D1, D2, D5 |
| 2 | 22uH | INDUCTOR_BOURNS | L1, L2 |
| 2 | 27R | SM0805 | R25, R26 |
| 2 | 47pF | SM0603 | C62, C63 |
| 2 | CONN_4 | CONN_USB_MINI_PIERRE | P1, P2 |
| 2 | DDR_SDRAM_MT46_X16 | TSOP66_JEDEC_DDR_SDRAM | IC1, IC2 |
| 2 | DIODE | SOD123 | D3, D4 |
| 1 | 0R | SM0603 | R22 |
| 1 | 100k | SM0805 | R20 |
| 1 | 1K | SM0805 | R19 |
| 1 | 1uf | SM0603_Capa | C10 |
| 1 | 24Mhz | SMDXTAL24mhz | X2 |
| 1 | 32.768kHz | xtal32.768 | X1 |
| 1 | CONN_1 | PIN_ARRAY_1 | reg_5v1 |
| 1 | CONN_10 | FPC10 | P7 |
| 1 | CONN_18 | FPC22 | P4 |
| 1 | CONN_2 | PIN_ARRAY_2X1 | P3 |
| 1 | CONN_20X2 | FPC37 | P8 |
| 1 | CONN_5 | PIN_ARRAY_5x1 | P5 |
| 1 | CONN_MICROSD | Memory_card_microsd_alps | U1 |
| 1 | FT230X | QFN16_p0.65mm_MSP430F20xx | U4 |
| 1 | IMX233-BGA | BGA169_0.8mmPitch_11x11mm | IC3 |
| 1 | JUMPER-2 | SM0805 | JP1 |
| 1 | NA(100pf) | SM0603_Capa | C9 |
| 1 | PIC16F722A | SSOP28 | U2 |
| 1 | SP6641A | SOT23-5_Opendous | U3 |
| 1 | SWITCH_INV | PIN_ARRAY_3X1 | SW1 |
| 1 | ferite | SM0603 | L3 |
Questions
How big is the Calc PCB?
It measures 50 × 50 mm and has 6 copper layers, 1.6 mm thick.
What parts does the Calc use?
118 parts, built around the PIC16F722A-I/SS, FT230XQ-R and JUMPER-2.0/B. 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 Calc KiCad files?
From the pparent76/Librecalc-Hardware repository on GitHub, at the commit this page was made from: the board is proto2-IMX233BGA/calc.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Calc design in my own project?
Its repository states no licence, so its author keeps all rights: ask pparent76 before reusing the design.
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