Mother Ctrl
About the Mother Ctrl PCB
Mother Ctrl is an open source STM32 PCB design by Tomoshibi-technology, published on GitHub under the MIT license. It is a 2-layer board measuring 100 × 60 mm, with 248 components from 58 distinct parts.
Its main chip is the STM32F446RETX, from the STM32 family. Other key parts include the CH340E, TWE-L-WX, AZ1084CD-3.3, BNO055 and MAX3485. By type, the board carries 103 resistors, 38 diodes, 37 capacitors, 32 transistors, 17 connectors and 8 ICs.
From the project
RoboCup JapanOpen 2024とEindohoven 2024に向けての回路開発
Main components on the Mother Ctrl
Mother Ctrl bill of materials (BOM)
248 components, 58 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CH340E | MSOP-10_3x3mm_P0.5mm | U1 |
| 1 | TWE-L-WX | MonoWireless_TWE-L-WX | U2 |
| 1 | AZ1084CD-3.3 | TO-252-2 | U3 |
| 1 | STM32F446RETX STM32F446RETx | LQFP-64_10x10mm_P0.5mm | U4 |
| 1 | BNO055 | BNO055 | U5 |
| 3 | MAX3485 | SOP-8_3.9x4.9mm_P1.27mm | U6, U7, U8 |
| 3 | MTP4835I3 | TO-252-2 | Q1, Q3, Q29 |
| 7 | BSS138 | SOT-23 | Q2, Q23, Q24, Q25, Q26, Q27, Q28 |
| 9 | SSM3J332R | SOT-23W | Q4, Q6, Q9, Q10, Q13, Q15, Q17, Q19 +1 |
| 13 | S8050 | SOT-23 | Q5, Q7, Q8, Q11, Q12, Q14, Q16, Q18 +5 |
| 1 | 16MHZ 16MHz | Crystal_SMD_3225-4Pin_3.2x2.5mm_HandSoldering | Y1 |
| 1 | 32.768KHZ 32.768kHz | Crystal_SMD_3215-2Pin_3.2x1.5mm | Y2 |
| 1 | CONN_01X02_MALE Conn_01x02_Male | AMASS_XT30PW-M_1x02_P2.50mm_Horizontal | J1 |
| 1 | CONN_01X02_FEMALE Conn_01x02_Female | AMASS_XT30PW-F_1x02_P2.50mm_Horizontal | J2 |
| 1 | USB_C_RECEPTACLE_USB2.0 USB_C_Receptacle_USB2.0 | USB_C_Receptacle_G-Switch_GT-USB-7010ASV | J3 |
| 1 | CONN_01X07_FEMALE Conn_01x07_Female | PinSocket_1x07_P2.54mm_Horizontal | J4 |
| 1 | CONN_01X10_MALE Conn_01x10_Male | BoxHeader_2x05_P1.27mm_Vertical_SMD | J5 |
| 1 | CONN_01X02_MALE Conn_01x02_Male | Molex_SPOX_5268-02A_1x02_P2.50mm_Horizontal | J6 |
| 2 | CONN_01X03_MALE Conn_01x03_Male | Molex_SPOX_5268-03A_1x03_P2.50mm_Horizontal | J7, J8 |
| 4 | CONN_01X04_MALE Conn_01x04_Male | Molex_SPOX_5268-04A_1x04_P2.50mm_Horizontal | J9, J10, J11, J12 |
Show 38 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | CONN_01X05_MALE Conn_01x05_Male | Molex_SPOX_5268-05A_1x05_P2.50mm_Horizontal | J13, J14 |
| 3 | CONN_01X12_FEMALE Conn_01x12_Female | PinSocket_1x12_P2.54mm_Vertical | J15, J16, J17 |
| 2 | JUMPER_2_OPEN Jumper_2_Open | PinHeader_1x02_P2.54mm_Vertical | JP1, JP2 |
| 1 | OKL-T/6-W12N-C | MURATA_OKL-T-6-W12N-C | MD1 |
| 1 | SW_SPDT | 3P_SPDT_5Pin_ToggleSwitch | SW1 |
| 4 | SW_SPST | SW_Push_1P1T_NO_Vertical_Wuerth_434133025816 | SW2, SW3, SW6, SW7 |
| 1 | SW_DPDT_X2 SW_DPDT_x2 | SW_CuK_JS202011CQN_DPDT_Straight | SW4 |
| 1 | SW_SPDT | 3P_SPDT_SlideSwitch | SW5 |
| 1 | TestPoint | TestPoint_THTPad_D2.0mm_Drill1.0mm | TP5 |
| 23 | 1N5819WS | D_SOD-323_HandSoldering | D1, D2, D5, D10, D11, D12, D13, D14 +15 |
| 3 | Yellow | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D3, D25, D26 |
| 1 | MA10EB045 | DO-221BC | D4 |
| 5 | Red | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D6, D7, D8, D22, D23 |
| 2 | D_Zener | D_SOD-323_HandSoldering | D9, D21 |
| 4 | Green | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D27, D28, D29, D30 |
| 7 | 1UF 1uF | C_0402_1005Metric | C1, C9, C11, C13, C14, C19, C31 |
| 16 | 0.1UF 0.1uF | C_0402_1005Metric | C2, C4, C5, C6, C24, C25, C26, C27 +8 |
| 2 | 10UF 10uF | C_0805_2012Metric | C3, C10 |
| 1 | 22UF 22uF | C_0805_2012Metric | C7 |
| 2 | C14663 ADJ_ST | C_0603_1608Metric | C8, C12 |
| 4 | 22PF 22pF | C_0603_1608Metric | C15, C16, C17, C18 |
| 4 | 470UF 470uF | C_Elec_8x10.2 | C20, C21, C22, C23 |
| 1 | 4.7UF 4.7uF | C_0603_1608Metric | C30 |
| 57 | 10K 10k | R_0402_1005Metric | R1, R4, R9, R12, R13, R14, R16, R20 +49 |
| 5 | 100K 100k | R_0402_1005Metric | R2, R21, R29, R37, R60 |
| 3 | PullUP? | R_0603_1608Metric | R3, R5, R64 |
| 2 | 5.1K 5.1k | R_0402_1005Metric | R6, R10 |
| 1 | 33K 33k | R_0603_1608Metric | R7 |
| 1 | 10K 10k | R_0603_1608Metric | R8 |
| 15 | 1k | R_0402_1005Metric | R11, R15, R17, R18, R19, R22, R36, R62 +7 |
| 1 | 330 | R_0402_1005Metric | R23 |
| 1 | 10 | R_0402_1005Metric | R24 |
| 1 | 1.2k | R_0402_1005Metric | R26 |
| 2 | 10K PullUP | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R84, R85 |
| 3 | 7.5K 7.5k | R_0603_1608Metric | R88, R89, R92 |
| 3 | 20K 20k | R_0402_1005Metric | R90, R91, R93 |
| 6 | 2.2K 2.2k | R_0402_1005Metric | R94, R95, R96, R97, R100, R101 |
| 2 | 120 | R_0402_1005Metric | R98, R99 |
Mother Ctrl design files
The KiCad project lives in the Tomoshibi-technology/RCJ-Japan2024-Circuit repository on GitHub; these links point at the commit this page was built from.
Mother Ctrl: common questions
What microcontroller does the Mother Ctrl use?
The Mother Ctrl is built around the STM32F446RETX, from the STM32 family.
How big is the Mother Ctrl PCB?
The Mother Ctrl measures 100 × 60 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Mother Ctrl?
248 components, from 58 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 Mother Ctrl design files?
From the Tomoshibi-technology/RCJ-Japan2024-Circuit repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Mother Ctrl design in my own project?
Yes, under the terms of its MIT license, which Tomoshibi-technology chose for the repository.
Can I test firmware for the Mother Ctrl 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 RCJ-Japan2024-Circuit
STM32IR
96 × 138 mm190 parts2LMIT1
ESP32Pole
100 × 70 mm181 parts2LMIT1
STM32LargeMD
110 × 60 mm148 parts2LMIT1
STM32SmallMD
90 × 40 mm142 parts2LMIT1
STM32Panel
90 × 62 mm118 parts2LMIT1
Mother UI
100 × 60 mm92 parts2LMIT1
STM32Encoder
50 × 40 mm57 parts2LMIT1
LargePW
86 × 100 mm36 parts2LMIT1
LED lighting large
94 × 94 mm34 parts2LMIT1
SmallPW
76 × 40 mm18 parts2LMIT1
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