This is my own custom development board, made for the ATmega328P. I created this both as learning experience (in PCB design and in soldering SMD components), and as a practical device to assist in prototyping.
Devboard is an open-source printed circuit board by sam-james-harding, from the sam-james-harding/atmega328p-devboard repository on GitHub, published under the MIT licence. It is a 2-layer board of 26.4 × 50.7 mm with 26 parts on 49 nets, routed with 292 tracks and 14 vias.
It is built around the ATMEGA328P-AU and MCP2221A-I/ST. Its parts include 6 resistors, 5 capacitors, 4 diodes, 4 connectors and 3 ICs. It belongs with the microcontroller boards boards and the AVR (ATmega, ATtiny) boards of this library.
This is my own custom development board, made for the ATmega328P. I created this both as learning experience (in PCB design and in soldering SMD components), and as a practical device to assist in prototyping.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 470R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R3, R4 |
| 2 | 10pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2 |
| 2 | 4.7uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C4 |
| 2 | 5K1 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5, R6 |
| 2 | Conn_01x15_Pin | Connector_PinHeader_2.54mm:PinHeader_1x15_P2.54mm_Vertical | J3, J4 |
| 2 | SPDT | devboard:slide_switch | SW2, SW3 |
| 2 | YELLOW | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2, D3 |
| 1 | 10K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | 1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5 |
| 1 | ATmega328P-A | Package_QFP:TQFP-32_7x7mm_P0.8mm | U1 |
| 1 | AVR-ISP-6 | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J2 |
| 1 | Crystal_GND24 | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm_HandSoldering | Y1 |
| 1 | D_Schottky | Diode_SMD:D_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1 |
| 1 | LED_RED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D4 |
| 1 | MCP1825S | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3 |
| 1 | MCP2221A-I/ST | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U2 |
| 1 | Pushbutton | Button_Switch_SMD:SW_Push_1P1T_NO_CK_KMR2 | SW1 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
sam-james-harding/atmega328p-devboard
This is my own custom development board, made for the ATmega328P. I created this both as learning experience (in PCB design and in soldering SMD components), and as a practical device to assist in prototyping.
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It measures 26.4 × 50.7 mm and has 2 copper layers, 1.6 mm thick.
26 parts, built around the ATMEGA328P-AU and MCP2221A-I/ST. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the sam-james-harding/atmega328p-devboard repository on GitHub, at the commit this page was made from: the board is rev_2/devboard/devboard.kicad_pcb and its schematic rev_1/devboard/devboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
