Main 3.1
About the Main 3.1 PCB
Main 3.1 is an open source AVR/Arduino PCB design by eesakiii, published on GitHub. It is a 2-layer board measuring 206 × 197.4 mm, with 65 components from 41 distinct parts.
Its main chip is the Arduino Compatible DC-DC Boost Module with Display, from the AVR/Arduino family. Other key parts include the TB67H420FTG Dual/Single Motor Driver Carrier, DEV-16771, Adafruit_BNO055_STEMMA_QT, Bluetooth_Module_(HC-05) and Bluetooth_Module_(HC-06). By type, the board carries 20 connectors, 16 ICs, 16 resistors, 9 capacitors, 2 transistors and 2 diodes.
Main components on the Main 3.1
Main 3.1 bill of materials (BOM)
65 components, 41 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ~ | Pololu 3.3V, 500mA Step-Down Voltage Regulator D24V5F3 | U1 |
| 1 | ~ | DC-DC Multi-output Buck Converter | U2 |
| 4 | ~ | SW_Cherry_MX_3mmLED | U3, U10, U11, U12 |
| 4 | TB67H420FTG Dual/Single Motor Driver Carrier | TB67H420FTG DualSingle Motor Driver Carrier | U4, U5, U6, U7 |
| 1 | DEV-16771 | MODULE_DEV-16771 | U8 |
| 1 | Arduino Compatible DC-DC Boost Module with Display | Arduino Compatible DC-DC Boost Module with Display | U9 |
| 1 | Adafruit_BNO055_STEMMA_QT | Adafruit IMU BNO055 | U13 |
| 1 | ~ | 5V, 5.5A Step-Down Voltage Regulator D36V50F5 | U14 |
| 1 | Bluetooth_Module_(HC-05) | PinHeader_1x06_P2.54mm_Vertical | U15 |
| 1 | Bluetooth_Module_(HC-06) | PinHeader_1x04_P2.54mm_Vertical | U16 |
| 1 | BSC040N10NS5 | TDSON-8-1 | Q1 |
| 1 | Q_Photo_NPN | LED_D3.0mm | Q2 |
| 1 | Battery Buzzer | PinHeader_1x09_P2.54mm_Vertical | J1 |
| 1 | BACKUP 3V3 | SolderWire-0.75sqmm_1x02_P4.8mm_D1.25mm_OD2.3mm | J3 |
| 1 | SPI | PinSocket_1x05_P2.54mm_Vertical | J5 |
| 1 | Solenoid | SolderWire-0.75sqmm_1x02_P4.8mm_D1.25mm_OD2.3mm | J6 |
| 1 | Motor 1 | PinSocket_1x06_P2.54mm_Vertical | J7 |
| 1 | Motor 2 | PinSocket_1x06_P2.54mm_Vertical | J8 |
| 1 | Motor 3 | PinSocket_1x06_P2.54mm_Vertical | J9 |
| 1 | Motor 4 | PinSocket_1x06_P2.54mm_Vertical | J10 |
Show 21 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LEFT HEADERS | PinHeader_1x24_P2.54mm_Vertical | J11 |
| 1 | RIGHT HEADERS | PinHeader_1x24_P2.54mm_Vertical | J12 |
| 1 | MID HEADERS | PinHeader_1x05_P2.54mm_Vertical | J13 |
| 1 | UART | PinSocket_1x03_P2.54mm_Vertical | J14 |
| 1 | I2C | PinSocket_1x03_P2.54mm_Vertical | J15 |
| 1 | 4S Battery | DEANS | J16 |
| 1 | Power Switch | AMASS_XT30UPB-F_1x02_P5.0mm_Vertical | J17 |
| 1 | Batt Bal | JST_XH_B5B-XH-A_1x05_P2.50mm_Vertical | J18 |
| 1 | 5V PI | SolderWire-0.75sqmm_1x02_P4.8mm_D1.25mm_OD2.3mm | J19 |
| 1 | ESC PWR | SolderWire-0.5sqmm_1x02_P4.6mm_D0.9mm_OD2.1mm | J20 |
| 1 | Line | JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J21 |
| 1 | ESC PWM | PinHeader_1x03_P2.54mm_Vertical | J23 |
| 1 | LED | LED_D3.0mm | D1 |
| 1 | STTH2002G-TRn | TO-263-2 | D4 |
| 4 | 10uF | C_0805_2012Metric | C1, C7, C8, C9 |
| 1 | 100uF | CP_Radial_D10.0mm_P5.00mm | C2 |
| 4 | 750uF | CP_Radial_D10.0mm_P5.00mm | C3, C4, C5, C6 |
| 4 | 30R | R_0805_2012Metric | R1, R3, R5, R7 |
| 8 | 10K | R_0805_2012Metric | R2, R4, R6, R9, R10, R11, R12, R14 |
| 3 | 15R | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R8, R15, R16 |
| 1 | 95R | R_0805_2012Metric | R13 |
Main 3.1 design files
The KiCad project lives in the eesakiii/SilverbackPCBs repository on GitHub; these links point at the commit this page was built from.
Main 3.1: common questions
What microcontroller does the Main 3.1 use?
The Main 3.1 is built around the Arduino Compatible DC-DC Boost Module with Display, from the AVR/Arduino family.
How big is the Main 3.1 PCB?
The Main 3.1 measures 206 × 197.4 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Main 3.1?
65 components, from 41 distinct parts. The full bill of materials is listed on this page.
Where can I download the Main 3.1 design files?
From the eesakiii/SilverbackPCBs repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Main 3.1 design in my own project?
The repository has no license, so all rights stay with eesakiii. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Main 3.1 without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
More boards in SilverbackPCBs
AVR/ArduinoChi Chi
169 × 170 mm100 parts2LNo license0
Line 3.0
206 × 197.4 mm100 parts2LNo license0
ESP32Bulma
100 × 85 mm77 parts2LNo license0
Line 3.1
206 × 197.4 mm72 parts2LNo license0
ESP32Line 2.3
214.9 × 206.5 mm54 parts2LNo license0
Line 2.4
214.9 × 206.5 mm53 parts2LNo license0
AVR/ArduinoMain 2.4
214.9 × 206.5 mm40 parts2LNo license0
ESP32Main 2.3
214.9 × 206.5 mm34 parts2LNo license0
ESP32Bulma2.2
85 × 118.3 mm32 parts2LNo license0
ESP32Rescue Line V2
61 × 57.3 mm16 parts2LNo license0
Coilgun 1.3 Main Control Board
66 × 55.9 mm10 parts2LNo license0
Similar boards
AVR/ArduinoRedox keyboard
mattdibi
162.2 × 126.5 mm77 parts2LMIT2.0k
AVR/ArduinoModuleV450
stuartpittaway
30 × 61.4 mm39 parts2LCC-BY-NC-4.01.1k
AVR/ArduinoV4
30 × 50 mm38 parts2LCC-BY-NC-4.01.1k
AVR/ArduinoDiscipline
coseyfannitutti
304.9 × 122.8 mm170 parts2LCC-BY-NC-4.01.0k
AVR/ArduinoMegadesk
gcormier
41.7 × 32.2 mm23 parts2LGPL-3.0818
AVR/ArduinoEasyduino Atmega Nano
Hanqaqa
43.4 × 18 mm30 parts4LCERN-OHL-P-2.0746