MainBoard
About the MainBoard PCB
MainBoard is an open source AVR/Arduino PCB design by andresR8, published on GitHub. It is a 2-layer board measuring 55.6 × 64 mm, with 41 components from 23 distinct parts.
Its main chip is the ATMEGA168A-AU, from the AVR/Arduino family. Other key parts include the TC1262-3.3VDBTR, CLV1A-FKB-CHMKPEHBB7A363, NRF24L01, TB6552 and BATTERY. By type, the board carries 13 resistors, 12 capacitors, 7 connectors, 6 ICs, 2 relays and 1 transistor.
It belongs with the robotics & motion designs in this gallery.
From the project
A mini-sized robot for investigation in robotics and control systems
Main components on the MainBoard
MainBoard bill of materials (BOM)
41 components, 23 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ATMEGA168A-AU ATMEGA168A-A Atmel | TQFP32 | IC1 |
| 1 | TC1262-3.3VDBTR TC1262 Microchip Technology | SOT223 | U1 |
| 1 | CLV1A-FKB-CHMKPEHBB7A363 CLV1AFK Cree, Inc. | LEDRGB | U2 |
| 1 | NRF24L01 Nordic Semiconductor | Nrf24l01 | U3 |
| 1 | TB6552 Toshiba | ssop_16 | U4 |
| 1 | BATTERY | Battery3x2 | U6 |
| 1 | MMBT3904LT3G NPN ON Semiconductor | SOT23_MOD | Q5 |
| 1 | MOTOR1 | MotorLeft | P1 |
| 1 | MOTOR2 | MotorRight | P2 |
| 1 | M20-7820446 BT Harwin Inc. | PIN_ARRAY_4x1 | P3 |
| 1 | PPTC032LFBN-RC AVRSPI Sullins Connector Solutions | pin_array_3x2 | P4 |
| 1 | BATT | PIN_ARRAY_2X1 | P5 |
| 1 | M20-7820446 I2C Harwin Inc. | PIN_ARRAY_4x1 | P6 |
| 1 | 720-SFH4545 CONN_10X2 Osram Opto Semiconductor | IR_Sensors | P7 |
| 2 | HALL | HALL | K1, K2 |
| 2 | 8.75105E+11 10uF Wurth Electronics Inc | c_elec_6.3x5.3 | C1, C7 |
| 2 | VJ0805Y105KXQTW1BC 1uF Vishay / Vitramon | c_0805 | C2, C4 |
| 7 | CC0805ZRY5V9BB104 0.1uF Yageo | c_0805 | C3, C5, C8, C9, C10, C11, C12 |
| 1 | CC0805ZRY5V9BB104 100nF Yageo | c_0805 | C6 |
| 3 | ESR18EZPF1002 10K ROHM Semiconductor | SM1206 | R1, R17, R18 |
Show 3 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 5 | RC1206JR-071K5L 1.5K Yageo | SM1206 | R2, R4, R6, R12, R14 |
| 2 | ESR18EZPJ330 33 ROHM Semiconductor | SM1206 | R3, R9 |
| 3 | RC1206FR-07430RL 430 Yageo | SM1206 | R11, R15, R16 |
MainBoard design files
The KiCad project lives in the andresR8/Robotics4Control repository on GitHub; these links point at the commit this page was built from.
MainBoard: common questions
What microcontroller does the MainBoard use?
The MainBoard is built around the ATMEGA168A-AU, from the AVR/Arduino family.
How big is the MainBoard PCB?
The MainBoard measures 55.6 × 64 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the MainBoard?
41 components, from 23 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 MainBoard design files?
From the andresR8/Robotics4Control repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the MainBoard design in my own project?
The repository has no license, so all rights stay with andresR8. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the MainBoard 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.
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