Flat hierarchy
About the Flat hierarchy PCB
Flat hierarchy is an open source PIC PCB design by nickradfc, published on GitHub. It is a 2-layer board measuring 160 × 99.1 mm, with 57 components from 36 distinct parts.
Its main chip is the PIC_18_PINS, from the PIC family. Other key parts include the 24Cxx, 74HC125, 7805, LT1373 and PIC_8_PINS. By type, the board carries 21 resistors, 12 diodes, 9 capacitors, 6 ICs, 3 transistors and 3 connectors.
It belongs with the usb & debug tools designs in this gallery.
Main components on the Flat hierarchy
Flat hierarchy bill of materials (BOM)
57 components, 36 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 24Cxx | DIP-8_W7.62mm_LongPads | U1 |
| 1 | 74HC125 | DIP-14_W7.62mm_LongPads | U2 |
| 1 | 7805 | TO-220-3_Horizontal_TabDown | U3 |
| 1 | LT1373 | DIP-8_W7.62mm_LongPads | U4 |
| 1 | PIC_18_PINS | DIP-18_W7.62mm_Socket_LongPads | U5 |
| 1 | PIC_8_PINS | DIP-8_W7.62mm_LongPads | U6 |
| 1 | BC237 | TO-92 | Q1 |
| 2 | BC307 | TO-92 | Q2, Q3 |
| 1 | CONN_2 | Altech_AK300_1x02_P5.00mm_45-Degree | P1 |
| 1 | SUPP28 | DIP-28_W7.62mm_Socket_LongPads | P2 |
| 1 | SUPP40 | DIP-40_W15.24mm_Socket_LongPads | P3 |
| 1 | JUMPER | PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | 1K | RV2X4 | RV1 |
| 1 | 1N4004 | D_DO-35_SOD27_P12.70mm_Horizontal | D1 |
| 7 | BAT43 | D_DO-35_SOD27_P7.62mm_Horizontal | D2, D3, D4, D5, D6, D7, D11 |
| 1 | RED-LED | LED_D5.0mm | D8 |
| 1 | GREEN-LED | LED_D5.0mm | D9 |
| 1 | SCHOTTKY | D_DO-35_SOD27_P12.70mm_Horizontal | D10 |
| 1 | YELLOW-LED | LED_D5.0mm | D12 |
| 1 | 22uH | INDUCTOR_V | L1 |
Show 16 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 100uF | CP_Axial_L18.0mm_D6.5mm_P25.00mm_Horizontal | C1 |
| 1 | 220uF | CP_Axial_L18.0mm_D6.5mm_P25.00mm_Horizontal | C2 |
| 1 | 22uF/25V | CP_Axial_L11.0mm_D6.0mm_P18.00mm_Horizontal | C3 |
| 1 | 0 | C_Disc_D5.1mm_W3.2mm_P5.00mm | C4 |
| 1 | 10nF | C_Disc_D5.1mm_W3.2mm_P5.00mm | C5 |
| 3 | 100nF | C_Disc_D5.1mm_W3.2mm_P5.00mm | C6, C7, C8 |
| 1 | 22OnF | C_Disc_D5.1mm_W3.2mm_P5.00mm | C9 |
| 7 | 10K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R3, R4, R5, R6, R7 |
| 1 | 1K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R8 |
| 3 | 2.2K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R9, R19, R20 |
| 1 | 5.1K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R10 |
| 2 | 22K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R11, R17 |
| 4 | 470 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R12, R13, R14, R21 |
| 1 | 6.2K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R15 |
| 1 | 62K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R16 |
| 1 | 220 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R18 |
Flat hierarchy design files
The KiCad project lives in the nickradfc/kicad-demo-projects repository on GitHub; these links point at the commit this page was built from.
Flat hierarchy: common questions
What microcontroller does the Flat hierarchy use?
The Flat hierarchy is built around the PIC_18_PINS, from the PIC family.
How big is the Flat hierarchy PCB?
The Flat hierarchy measures 160 × 99.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Flat hierarchy?
57 components, from 36 distinct parts. The full bill of materials is listed on this page.
Where can I download the Flat hierarchy design files?
From the nickradfc/kicad-demo-projects repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Flat hierarchy design in my own project?
The repository has no license, so all rights stay with nickradfc. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Flat hierarchy without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug PIC firmware against it before you order a PCB.
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