Sthymuli motherboard
About the Sthymuli motherboard PCB
Sthymuli motherboard is an open source ESP32 PCB design by nathmo, published on GitHub under the Custom license license. It is a 4-layer board measuring 153.6 × 66.2 mm, with 189 components from 76 distinct parts.
Its main chip is the C2913199, from the ESP32 family. Other key parts include the C3021085, C22394458, C1880390, BQ25713RSNR and C47023. By type, the board carries 79 capacitors, 55 resistors, 13 ICs, 12 diodes, 10 transistors and 7 connectors.
It belongs with the robotics & motion, sensors and power & battery designs in this gallery.
From the project
Sthymuli is an educational Robot aimed for children. This repo contains the Kicad Implementation of the motherboard.
The motherboard is designed arround a doughnut shape with addons that plug in the center. the shape was chosen to encourage equal access to up to four children at a time interracting with the device.
the circuit is splitted between one motherboard and three cardinalboard this repo has the motherboard
the cardinal board can be found there : https://github.com/nathmo/Sthymuli-cardinalboard
Main components on the Sthymuli motherboard
Sthymuli motherboard bill of materials (BOM)
189 components, 76 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C2913199 ESP32-S3-WROOM-1 | ESP32-S3-WROOM-1 | U1 |
| 1 | C3021085 AP2112K-3.3 | SOT-23-5 | U2 |
| 1 | C22394458 BQ76905RGRR | IC_BQ76905RGRR | U3 |
| 2 | C1880390 AP62300WU | TSOT-23-6 | U4, U6 |
| 1 | BQ25713RSNR BQ25713 | QFN-32-1EP_4x4mm_P0.4mm_EP2.9x2.9mm | U5 |
| 1 | C47023 MCP23017x-x-SO | SOIC-28W_7.5x17.9mm_P1.27mm | U7 |
| 1 | C2150198 AP22913CN4 | WLCSP-4_0.89x0.89mm_Layout2x2_P0.5mm | U8 |
| 1 | C91447 IRM-H6xxT | Everlight_IRM-H6xxT | U9 |
| 2 | C9386 74HC4051 | SOIC-16_3.9x9.9mm_P1.27mm | U10, U12 |
| 1 | C145745 MCP6L01x-xOT | SOT-23-5 | U11 |
| 1 | C967633 LSM6DS3 | LGA-14_3x2.5mm_P0.5mm_LayoutBorder3x4y | U14 |
| 6 | C2876535 Q_NMOS_Depletion_GSD | VSON-8_3.3x3.3mm_P0.65mm_NexFET | Q1, Q2, Q3, Q4, Q5, Q6 |
| 1 | C111356 PMOS | VSON-8_3.3x3.3mm_P0.65mm_NexFET | Q7 |
| 2 | C551606 NX7002AK | SOT-23 | Q8, Q9 |
| 1 | C15127 Q_PMOS_GSD | TSOT-23 | Q10 |
| 1 | C42400252 USB_C_Receptacle_USB2.0_16P | USB_C_Receptacle_G-Switch_GT-USB-7010ASV | J1 |
| 1 | Conn_01x09 | PinSocket_1x09_P2.54mm_Vertical_SMD_Pin1Left | J2 |
| 1 | Conn_01x03 | PinSocket_1x03_P2.54mm_Vertical_SMD_Pin1Left | J3 |
| 1 | Conn_01x06 | ConnectorSpring | J4 |
| 3 | C41427537 Conn_02x08_Counter_Clockwise | PinSocket_2x08_P2.54mm_Vertical_SMD | J8, J11, J12 |
Show 56 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C7525438 Battery_Cell | Battery_Holder_18650_robop | BT4 |
| 1 | C365738 ES8374 | QFN-28-1EP_4x4mm_P0.45mm_EP2.4x2.4mm | ES1 |
| 1 | C18186315 Speaker | Speaker KELIKING KLJ-01304T-08R07W | LS1 |
| 1 | Microphone | SAMZO MIC-4013-G-G00 | MKTD4015BPN1 |
| 4 | C2884737 SW_Push | XKB5858 | SW1, SW2, SW3, SW4 |
| 1 | C13564 Thermistor | R_0603_1608Metric | TH1 |
| 7 | C2874885 WS2812B | LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D1, D2, D3, D4, D5, D6, D7 |
| 3 | C64898 D | D_SOD-123F | D30, D31, D34 |
| 2 | C5246195 LESD5D5.0C11G | D_SOD-523 | D32, D33 |
| 1 | C602029 2.2uH | FHD4020S-2R2MT | L1 |
| 2 | C167219 3.3uH | FXL0630-3R3-M | L2, L3 |
| 1 | C6913904 L | TDK VFS5045VA301 | L4 |
| 18 | C1525 100nF | C_0402_1005Metric | C1, C2, C3, C4, C5, C6, C7, C32 +10 |
| 5 | C16772 220nF | C_0402_1005Metric | C26, C27, C28, C29, C98 |
| 12 | C28323 1uF | C_0805_2012Metric | C30, C34, C35, C69, C70, C79, C81, C83 +4 |
| 6 | C1546 100pF | C_0402_1005Metric | C31, C33, C61, C62, C63, C66 |
| 13 | C15850 10uF | C_0805_2012Metric | C36, C37, C38, C41, C49, C50, C51, C53 +5 |
| 1 | C1531 1.8nF | C_0402_1005Metric | C39 |
| 1 | C47339 470nF | C_0402_1005Metric | C40 |
| 1 | C1562 33pF | C_0402_1005Metric | C42 |
| 1 | C1548 15pF | C_0402_1005Metric | C43 |
| 1 | C1754 680pF | C_0805_2012Metric | C44 |
| 2 | C1739 33nF | C_0805_2012Metric | C46, C47 |
| 3 | C15195 10nF | C_0402_1005Metric | C48, C72, C76 |
| 2 | C82219 47nF | C_0402_1005Metric | C52, C55 |
| 4 | C45783 22uF | C_0805_2012Metric | C59, C60, C68, C71 |
| 1 | C377773 2.2uF | C_0805_2012Metric | C64 |
| 1 | C1717 1.5nF | C_0805_2012Metric | C73 |
| 1 | C13533 330pF | C_0402_1005Metric | C74 |
| 1 | C1779 4.7uF | C_0805_2012Metric | C75 |
| 2 | C1523 1nF | C_0402_1005Metric | C80, C82 |
| 2 | C1554 20pF | C_0402_1005Metric | C85, C87 |
| 1 | C45783 22 uF | C_0805_2012Metric | C97 |
| 9 | C22859 10R | R_0603_1608Metric | R1, R2, R3, R4, R6, R9, R15, R36 +1 |
| 4 | C23186 5k1 | R_0603_1608Metric | R5, R7, R24, R28 |
| 7 | C22775 100R | R_0603_1608Metric | R8, R13, R16, R48, R59, R69, R70 |
| 1 | C7467246 0.001 R | R_1206_3216Metric | R14 |
| 1 | C25803 100K | R_0603_1608Metric | R17 |
| 1 | C23024 300K | R_0603_1608Metric | R18 |
| 2 | C7250 10M | R_0603_1608Metric | R19, R26 |
| 1 | C23178 470K | R_0603_1608Metric | R20 |
| 1 | C23024 270K | R_0603_1608Metric | R21 |
| 4 | C4190 2K2 | R_0603_1608Metric | R22, R23, R49, R58 |
| 1 | C12447 40.2K | R_0603_1608Metric | R25 |
| 1 | C22936 1R | R_0603_1608Metric | R27 |
| 2 | C23165 4.99R | R_0603_1608Metric | R29, R31 |
| 2 | C620909 0.01 R | R_0603_1608Metric | R30, R43 |
| 8 | C25804 10K | R_0603_1608Metric | R32, R33, R34, R42, R45, R46, R47, R71 |
| 1 | C22984 30K | R_0603_1608Metric | R35 |
| 1 | C25819 47K | R_0603_1608Metric | R38 |
| 1 | C22809 15K | R_0603_1608Metric | R39 |
| 1 | C22872 137K | R_0603_1608Metric | R40 |
| 1 | C23074 53.6K | R_0603_1608Metric | R41 |
| 1 | C21190 1K | R_0603_1608Metric | R44 |
| 2 | C22978 3K3 | R_0603_1608Metric | R50, R51 |
| 2 | C25190 27R | R_0603_1608Metric | R60, R61 |
Sthymuli motherboard design files
The KiCad project lives in the nathmo/Sthymuli-motherboard repository on GitHub; these links point at the commit this page was built from.
Sthymuli motherboard: common questions
What microcontroller does the Sthymuli motherboard use?
The Sthymuli motherboard is built around the C2913199, from the ESP32 family.
How big is the Sthymuli motherboard PCB?
The Sthymuli motherboard measures 153.6 × 66.2 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Sthymuli motherboard?
189 components, from 76 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 Sthymuli motherboard design files?
From the nathmo/Sthymuli-motherboard 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 Sthymuli motherboard design in my own project?
It is published under Custom license, which limits how it may be reused; read the license before building on it.
Can I test firmware for the Sthymuli motherboard without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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