ATmega328 control Board
About the ATmega328 control Board
ATmega328 control Board is an open source AVR/Arduino PCB design by olexsu, published on GitHub under the MIT license. It is a 4-layer board measuring 124 × 89.4 mm, with 129 components from 49 distinct parts.
Its main chip is the ATMEGA16U2-A, from the AVR/Arduino family. Other key parts include the LMV358, MCP23017_ML, LP2985-3.3, NCP1117 and ATMEGA328PB-A. By type, the board carries 53 resistors, 21 capacitors, 16 diodes, 13 connectors, 7 ICs and 6 transistors.
It belongs with the displays & leds designs in this gallery.
From the project
Custom ATmega328 embedded control board designed in KiCad with Arduino firmware.
Custom embedded control board based on the ATmega328PU microcontroller, designed in KiCad and compatible with Arduino firmware.
hardware – KiCad PCB design firmware – Arduino firmware gerbers – manufacturing files bom – bill of materials docs – schematic PDF images – hardware prototype photos
Clock oscillator verified with oscilloscope.
Board powered and tested using laboratory power supply.
Main components on the ATmega328 control Board
ATmega328 control Board bill of materials (BOM)
129 components, 49 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LMV358 | SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | MCP23017_ML | QFN-28-1EP_6x6mm_P0.65mm_EP4.25x4.25mm | U2 |
| 1 | LP2985-3.3 | SOT-23-5 | U3 |
| 1 | ATMEGA16U2-A ATmega16U2-A | TQFP-32_7x7mm_P0.8mm | U4 |
| 1 | NCP1117 | SOT-223-3_TabPin2 | U5 |
| 1 | ATMEGA328PB-A ATmega328PB-A | TQFP-32_7x7mm_P0.8mm | U6 |
| 1 | MAX485E | SOIC-8_3.9x4.9mm_P1.27mm | U7 |
| 1 | DMG2305UX | SOT-23 | Q1 |
| 1 | FDN340P | SOT-23 | Q2 |
| 4 | AO3400A | SOT-23 | Q4, Q5, Q6, Q7 |
| 2 | ABLS-16.000MHZ-D-4-T | Crystal_SMD_HC49-SD_HandSoldering | Y1, Y2 |
| 1 | USB_B_Micro | USB_Micro-B_Molex-105017-0001 | J1 |
| 2 | AVR-ISP-6 | PinHeader_2x03_P2.54mm_Vertical | J2, J4 |
| 2 | Jack-DC | BarrelJack_CUI_PJ-102AH_Horizontal | J3, J8 |
| 1 | CONN_01X04_SOCKET Conn_01x04_Socket | JST_PH_B4B-PH-K_1x04_P2.00mm_Vertical | J5 |
| 1 | CONN_02X08_ODD_EVEN Conn_02x08_Odd_Even | PinHeader_2x08_P2.54mm_Vertical | J6 |
| 1 | SCREW_TERMINAL_01X03 Screw_Terminal_01x03 | TerminalBlock_Phoenix_MKDS-1,5-3-5.08_1x03_P5.08mm_Horizontal | J7 |
| 1 | CONN_02X05_ODD_EVEN Conn_02x05_Odd_Even | PinHeader_2x05_P2.54mm_Vertical | J9 |
| 4 | SCREW_TERMINAL_01X02 Screw_Terminal_01x02 | TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J10, J11, J12, J13 |
| 2 | MF-MSMF050-2 | Fuse_1812_4532Metric_Pad1.30x3.40mm_HandSolder | F1, F6 |
Show 29 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | TBU-CA-065-200-WH | Fuse_Bourns_TBU-CA | F2, F3 |
| 1 | 0805L200SLTHYR | Fuse_0805_2012Metric_Pad1.15x1.40mm_HandSolder | F4 |
| 1 | PTSAHT120624V050 | Fuse_1206_3216Metric_Pad1.42x1.75mm_HandSolder | F5 |
| 2 | CG0603MLC-05E | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | RV1, RV2 |
| 1 | SW_Push | SW_Tactile_SPST_NO_Straight_CK_PTS636Sx25SMTRLFS | SW1 |
| 7 | LED | D_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1, D4, D5, D9, D15, D16, D17 |
| 2 | CD1206-S01575 MMSD4148T1G | D_SOD-123 | D2, D6 |
| 1 | CD1206-S01575 B5819W | D_SOD-123 | D3 |
| 1 | SMAJ6.0A | D_SMA | D7 |
| 1 | CDSOT23-SM712 | SOT-23 | D8 |
| 4 | SS14 | D_SMA | D11, D12, D13, D14 |
| 2 | BLM21AG121BH1D | L_0805_2012Metric_Pad1.05x1.20mm_HandSolder | FB1, FB2 |
| 9 | 100NF 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C7, C9, C10, C11, C12, C18, C19 +1 |
| 4 | 22PF 22pF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C3, C13, C14 |
| 2 | 1UF 1uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4, C5 |
| 2 | 47UF 47uF | C_Radial_D5.0mm_H11.0mm_P2.00mm | C6, C8 |
| 2 | 0.1UF 0.1uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C15, C16 |
| 1 | 10UF 10uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C17 |
| 1 | 10NF 10nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C21 |
| 7 | 10K 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R7, R12, R20, R21, R22 |
| 2 | 1M | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3, R13 |
| 2 | 22 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4, R5 |
| 10 | 1k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6, R8, R9, R10, R11, R14, R28, R31 +2 |
| 6 | 100K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R15, R23, R25, R34, R35, R52 |
| 6 | 4K7 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R16, R17, R18, R19, R50, R51 |
| 1 | 120 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R24 |
| 15 | 100 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R26, R27, R29, R30, R38, R41, R42, R43 +7 |
| 2 | 680 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R36, R37 |
| 2 | 47 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R39, R40 |
ATmega328 control Board design files
The KiCad project lives in the olexsu/ATmega328_control_Board repository on GitHub; these links point at the commit this page was built from.
ATmega328 control Board: common questions
What microcontroller does the ATmega328 control Board use?
The ATmega328 control Board is built around the ATMEGA16U2-A, from the AVR/Arduino family.
How big is the ATmega328 control Board?
The ATmega328 control Board measures 124 × 89.4 mm, has 4 copper layers and is 1.600198 mm thick.
How many components are on the ATmega328 control Board?
129 components, from 49 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 ATmega328 control Board design files?
From the olexsu/ATmega328_control_Board 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 ATmega328 control Board design in my own project?
Yes, under the terms of its MIT license, which olexsu chose for the repository.
Can I test firmware for the ATmega328 control Board 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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