Esc sigma-4s
About the Esc sigma-4s PCB
Esc sigma-4s is an open source STM32 PCB design by mstoilov, published on GitHub. It is a 4-layer board measuring 27 × 52 mm, with 121 components from 29 distinct parts.
Its main chip is the STM32F411RETx, from the STM32 family. Other key parts include the TPS70933, ACS711 and L6398. By type, the board carries 49 resistors, 33 capacitors, 15 diodes, 9 connectors, 6 ICs and 6 transistors.
From the project
Sigmadrone Electronic Speed Controller (ESC)
This is the sigmadrone ESC repository. It contains hardware designs and firmware software for the Sigmadrone ESC.
Main components on the Esc sigma-4s
Esc sigma-4s bill of materials (BOM)
121 components, 29 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TPS70933 | SOT-23-5 | U2 |
| 1 | ACS711 | SOIC-8_3.9x4.9mm_Pitch1.27mm | U3 |
| 3 | L6398 | SOIC-8_3.9x4.9mm_Pitch1.27mm | U4, U6, U7 |
| 1 | STM32F411RETx | LQFP-64_10x10mm_Pitch0.5mm | U5 |
| 6 | STL160NS3LLH7 | PQFN_5x6_SGD | Q1, Q2, Q3, Q4, Q5, Q6 |
| 1 | ABM3-8.000MHZ-D2Y-T | Crystal_SMD_Abracon_ABM3-2pin_5.0x3.2mm | Y1 |
| 1 | CONN_02X05 | Pin_Header_Straight_2x05_Pitch1.27mm | J2 |
| 5 | PAD | SolderWirePad_single_SMD_2x3mm | P1, P4, P6, P7, P8 |
| 3 | PAD | SolderWirePad_single_SMD_1.5x2.5mm | P2, P3, P5 |
| 1 | WURTH_434153017835 | SW_SPST_WURTH_434153017835 | USR1 |
| 1 | GREEN | LED_0603 | D1 |
| 10 | BAT30KFILM | D_SOD-523 | D2, D3, D6, D7, D9, D10, D12, D13 +2 |
| 1 | RED | LED_0603 | D4 |
| 3 | STPS0560Z | D_SOD-123 | D8, D11, D14 |
| 1 | BEAD/0.6OHM/0.2A/2.2 kOhm @ 100MHz | R_0805 | FB1 |
| 3 | 100uF | CP_Elec_6.3x7.7 | C1, C2, C6 |
| 8 | 100nF 50V | C_0603 | C3, C4, C10, C14, C19, C24, C25, C30 |
| 11 | 1uF 100V | C_0805 | C5, C8, C13, C17, C20, C22, C26, C28 +3 |
| 3 | 4.7uF 25V | C_0805 | C9, C15, C29 |
| 6 | 100pF 100V | C_0603 | C16, C18, C21, C23, C33, C35 |
Show 9 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 27pF/50V/1% | C_0603 | C27, C32 |
| 2 | 2.2k | R_0603 | R1, R4 |
| 9 | 21 | R_0603 | R2, R3, R5, R23, R24, R33, R34, R43 +1 |
| 8 | 47k | R_0603 | R6, R15, R44, R45, R47, R48, R50, R51 |
| 4 | 4.7k | R_0603 | R7, R46, R49, R52 |
| 10 | 10k | R_0603 | R8, R10, R14, R19, R22, R27, R32, R37 +2 |
| 1 | 100 | R_0603 | R9 |
| 6 | 10 | R_0603 | R17, R20, R28, R30, R38, R40 |
| 9 | 5 | R_0603 | R18, R25, R26, R29, R35, R36, R39, R54 +1 |
Esc sigma-4s design files
The KiCad project lives in the mstoilov/sigmadrone-esc repository on GitHub; these links point at the commit this page was built from.
Esc sigma-4s: common questions
What microcontroller does the Esc sigma-4s use?
The Esc sigma-4s is built around the STM32F411RETx, from the STM32 family.
How big is the Esc sigma-4s PCB?
The Esc sigma-4s measures 27 × 52 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Esc sigma-4s?
121 components, from 29 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 Esc sigma-4s design files?
From the mstoilov/sigmadrone-esc repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Esc sigma-4s design in my own project?
The repository has no license, so all rights stay with mstoilov. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Esc sigma-4s 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.
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