Top and bottom
About the Top and bottom PCB
Top and bottom is an open source STM32 PCB design by shimotoriharuki, published on GitHub. It is a 2-layer board measuring 91 × 67.7 mm, with 118 components from 44 distinct parts.
Its main chip is the STM32F446RE, from the STM32 family. Other key parts include the A3921, ICM20648, SD_SLOT and ADuM7640. By type, the board carries 37 capacitors, 36 resistors, 12 connectors, 7 ICs, 5 switches and 4 diodes.
Main components on the Top and bottom
Top and bottom bill of materials (BOM)
118 components, 44 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | A3921 | TSSOP-28-1EP_4.4x9.7mm_Pitch0.65mm | IC1, IC2, IC3 |
| 1 | STM32F446RE | stm32f401 | U1 |
| 1 | ICM20648 | ICM20648 | U2 |
| 1 | SD_SLOT | micro_SDcard | U3 |
| 1 | ADuM7640 | ADUM7640ARQZ | U4 |
| 1 | DMG3415U | DMG3415U | Q1 |
| 1 | TC25L5I32K7680 | TC25L5I32K7680 | Y1 |
| 1 | ASDMB-8.000MHZ-LY-T | ASDMB-8.000MHZ-LY-T | Y2 |
| 1 | FFC_to_bottom | CN-FFC-SMT2(CN-FFC(0.5)14PD) | J1 |
| 1 | XA | XA_top_2pin | J2 |
| 3 | SH | JST_SH_BM03B-SRSS-TB_03x1.00mm_Straight | J3, J5, J8 |
| 1 | SH | JST_SH_BM06B-SRSS-TB_06x1.00mm_Straight | J4 |
| 4 | SH | JST_SH_BM04B-SRSS-TB_04x1.00mm_Straight | J6, J7, J9, J10 |
| 1 | FFC_to_sensor | CN-FFC(0.5)8PD | J11 |
| 1 | FFC_to_top | CN-FFC-SMT2(CN-FFC(0.5)14PD) | J14 |
| 6 | IRF8915 | IRF8915 | FET1, FET2, FET3, FET4, FET5, FET6 |
| 6 | ST32ETA102 | ST_32EA | RV1, RV2, RV3, RV4, RV5, RV6 |
| 4 | SKRPACE010 | SKRPACE010 | SW1, SW2, SW3, SW5 |
| 1 | ERD216RSZ | rotary_switch | SW4 |
| 1 | OSTB0603C1C-A | OSTB0603C1C-A | LED1 |
Show 24 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | LED | LED 1608 | D1, D2, D3 |
| 1 | 1SMB5930BT3G | 1SMB5930BT3G | D6 |
| 1 | 330 | R_1608_HandSoldering | L1 |
| 20 | 0.1u | C_1608_HandSolderring | C1, C3, C4, C6, C7, C9, C10, C11 +12 |
| 7 | 1u | C_1608_HandSolderring | C2, C13, C14, C17, C39, C43, C44 |
| 1 | 0.1 | C_1608_HandSolderring | C5 |
| 1 | 4.7u | C_1608_HandSolderring | C8 |
| 2 | 180u | CP_Elec_6.3x5.8 | C23, C38 |
| 2 | 47u | c_3225 | C28, C29 |
| 1 | 0.39u | C_1608_HandSolderring | C40 |
| 1 | 2.2u | c_1005 | C41 |
| 2 | 82u | CP_Elec_5x5.8 | C42, C45 |
| 1 | 150k | R_1608_HandSoldering | R1 |
| 19 | 10k | R_1608_HandSoldering | R2, R3, R4, R5, R6, R8, R9, R10 +11 |
| 1 | 39 | R_1608_HandSoldering | R7 |
| 3 | 47K | R_1608_HandSoldering | R19, R20, R21 |
| 1 | 1.2k | R_1608_HandSoldering | R22 |
| 1 | 680 | R_1608_HandSoldering | R23 |
| 1 | 470 | R_1608_HandSoldering | R24 |
| 2 | 560 | R_1608_HandSoldering | R25, R32 |
| 2 | 270 | R_1608_HandSoldering | R26, R33 |
| 1 | 12K | R_1608_HandSoldering | R30 |
| 1 | 1k | R_1608_HandSoldering | R31 |
| 3 | 10k | my_RN | RN1, RN2, RN3 |
Top and bottom design files
The KiCad project lives in the shimotoriharuki/2019RoboTrace_Kicad repository on GitHub; these links point at the commit this page was built from.
Top and bottom: common questions
What microcontroller does the Top and bottom use?
The Top and bottom is built around the STM32F446RE, from the STM32 family.
How big is the Top and bottom PCB?
The Top and bottom measures 91 × 67.7 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Top and bottom?
118 components, from 44 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Top and bottom design files?
From the shimotoriharuki/2019RoboTrace_Kicad repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Top and bottom design in my own project?
The repository has no license, so all rights stay with shimotoriharuki. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Top and bottom without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
More boards in 2019RoboTrace_Kicad
STM32MainCircuit v1
91 × 33 mm168 parts2LNo license0
MainCircuit v2 bottom
91 × 33 mm86 parts2LNo license0
STM32MainCircuit v2 top
91 × 33 mm84 parts2LNo license0
Line and sensor
70.2 × 81.4 mm15 parts2LNo license0
LineSensorCircuit v1
70.2 × 14.3 mm15 parts2LNo license0
SubSensor v1
25 × 4.1 mm6 parts2LNo license0
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