Mad Bot
About the Mad Bot PCB
Mad Bot is an open source ESP32 PCB design by Incomprehensible, published on GitHub under the MIT license. It is a 4-layer board measuring 133.2 × 115.3 mm, with 88 components from 47 distinct parts.
Its main chip is the ESP32-S3-WROOM-1-N8R8, from the ESP32 family. Other key parts include the RT6150BGQW, MP6550GG-Z, U3V40F6, MCP73831T-2ACI/OT and VL53L7CX. By type, the board carries 33 capacitors, 26 resistors, 12 ICs, 6 diodes, 5 connectors and 2 switches.
It belongs with the iot & wireless, robotics & motion and power & battery designs in this gallery.
From the project
Exploratory project in Embedded and Multi-Agent Robotics
Warning: This is an ongoing project, and the repository is under construction!
Note: Software support for some features is still in progress.
Main components on the Mad Bot
Mad Bot bill of materials (BOM)
88 components, 47 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | RT6150BGQW | SON50P250X250X80-11N-D | IC1 |
| 3 | MP6550GG-Z | IC12_MP6550_MNP | U1, U2, U3 |
| 1 | U3V40F6 | U3V40F6_upd | U4 |
| 1 | MCP73831T-2ACI/OT MCP73831T-2ACI_OT | SOT95P280X145-5N | U5 |
| 1 | ESP32-S3-WROOM-1-N8R8 | XCVR_ESP32S3WROOM1N8R8 | U6 |
| 1 | VL53L7CX | CONN_S4B-XH-SM4-TB_JST | U7 |
| 1 | PCA9685PW,118 PCA9685PW_118 | SOP65P640X110-28N | U8 |
| 1 | MPU-6500 | QFN24_3X3X0P9_MPU6500 | U9 |
| 1 | ArducamOV2640 | Arducam_Socket_2x09_P2.54mm_Vertical_SMD | U10 |
| 1 | WMM7027ATSN1 | WMM7027ATSN1-4TR | U11 |
| 1 | Q_PMOS_GSD | SOT-23 | Q2 |
| 3 | EncoderConn | JST_S6B-ZR-SM4A-TF_1.5mm | J1, J2, J3 |
| 1 | LiPo | JST_S2B-PH-SM4-TB_LF__SN_ | J4 |
| 1 | TYPE-C-31-M-12 | HRO_TYPE-C-31-M-12 | J5 |
| 1 | Flash_En | Flash_Jumper_1x02_P2.00mm_Vertical | JP1 |
| 1 | PTS526 SK15 SMTR2 LFS MCU_RST | PTS526SK15SMTR2LFS | S1 |
| 1 | PWROFF_Switch | DV7SA-02F-01_SW_DIP_SPSTx02_Slide | SW3 |
| 1 | WS2812B | WS2812B | LED1 |
| 1 | CHRG_LED | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D1 |
| 1 | PWR_LED_6V | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2 |
Show 27 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | D_Schottky | D_SOD-123F | D3 |
| 2 | ESDA5V3L | SOT-23 | D4, D5 |
| 1 | PWR_LED_3.3V | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D6 |
| 1 | 2.2uH | FNR4020S2R2MT | L1 |
| 3 | 0.1nF | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C1, C10, C14 |
| 10 | 0.1uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C7, C11, C20, C26, C30, C31, C33 +2 |
| 1 | 100nF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3 |
| 4 | 1uF | CP_EIA-3216-18_Kemet-A_Pad1.58x1.35mm_HandSolder | C5, C8, C12, C22 |
| 5 | 10uF | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C6, C9, C13, C24, C29 |
| 2 | 4.7uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C15, C17 |
| 2 | 47uF | C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C16, C18 |
| 1 | 22uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C19 |
| 2 | 20pF | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C21, C23 |
| 1 | Reserv | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C25 |
| 1 | 10nF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C32 |
| 1 | C | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C35 |
| 3 | 8.5k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R5 |
| 1 | 1M | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3 |
| 2 | 4.7k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R11 |
| 10 | 250k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6, R8, R10, R21, R22, R23, R24, R25 +2 |
| 1 | 2k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7 |
| 1 | 470 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R9 |
| 2 | 5.1k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R12, R15 |
| 1 | 150k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R13 |
| 2 | 1k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R14, R18 |
| 2 | 22 | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R16, R17 |
| 1 | 22 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R27 |
Mad Bot design files
The KiCad project lives in the Incomprehensible/Mad_Bot repository on GitHub; these links point at the commit this page was built from.
Mad Bot: common questions
What microcontroller does the Mad Bot use?
The Mad Bot is built around the ESP32-S3-WROOM-1-N8R8, from the ESP32 family.
How big is the Mad Bot PCB?
The Mad Bot measures 133.2 × 115.3 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Mad Bot?
88 components, from 47 distinct parts. The full bill of materials is listed on this page.
Where can I download the Mad Bot design files?
From the Incomprehensible/Mad_Bot repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Mad Bot design in my own project?
Yes, under the terms of its MIT license, which Incomprehensible chose for the repository.
Can I test firmware for the Mad Bot 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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