4 layers120 × 120 mm
2 layers120 × 120 mm
Task 1 microcontroller
TanviTalvadekar/IPD-Task-1-Microcontroller-PCB-- Size
- 120 × 120 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 37
- Nets
- 60
- Pads
- 172
- Tracks, vias
- 414, 11
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 18 Mar 2026
- Updated
- 18 Mar 2026
Overview
Task 1 microcontroller is an open-source printed circuit board by TanviTalvadekar, from the TanviTalvadekar/IPD-Task-1-Microcontroller-PCB- repository on GitHub. It is a 2-layer board of 120 × 120 mm with 37 parts on 60 nets, routed with 414 tracks and 11 vias.
It is built around the ATMEGA328-PU, AMS1117-3.3 and L7805, with the ULN2803A among its other parts. Its parts include 10 capacitors, 10 connectors, 5 ICs, 4 resistors and 2 diodes. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
4
ATMEGA328-PU
PDIP-28-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH PDIP-28 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
L7805
TO-220ST0℃~+125℃@(Tj) 1 1.2A 20V 2V@(1A) 42uV 500uA 5V 73dB@(120Hz) Fixed Positive Short Circuit Protection TO-220ST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSOSENVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
ULN2803A
SOP-18-300mil-40℃~+85℃ 0.93mA 100uA 15pF 20uA 30V 500mA 50V 8 SOP-18-300mil Darlington Transistor Arrays ROHSUMWDarlington Transistor Arrays
README
README.mdIPD-Task-1-Microcontroller-PCB-
Parts
37| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | R | Resistor_SMD:R_0805_2012Metric | R1, R2, R3, R5 |
| 3 | 100nf | Capacitor_THT:CP_Radial_D4.0mm_P2.00mm | C5, C7, C10 |
| 3 | Conn_01x08 | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J8, J12, J13 |
| 2 | 1u | Capacitor_THT:CP_Axial_L11.0mm_D5.0mm_P18.00mm_Horizontal | C1, C2 |
| 2 | 22pf | Capacitor_SMD:C_1206_3216Metric | C3, C4 |
| 2 | Barrel_Jack | Connector_BarrelJack:BarrelJack_Horizontal | J1, J4 |
| 2 | LED | LED_THT:LED_D5.0mm | D1, D2 |
| 2 | Screw_Terminal_01x02 | TerminalBlock:TerminalBlock_Xinya_XY308-2.54-2P_1x02_P2.54mm_Horizontal | J5, J6 |
| 1 | 100uf | Capacitor_THT:CP_Radial_D8.0mm_P5.00mm | C12 |
| 1 | 10nf | Capacitor_SMD:C_0805_2012Metric | C6 |
| 1 | 1uf | Capacitor_THT:CP_Axial_L11.0mm_D5.0mm_P18.00mm_Horizontal | C11 |
| 1 | 2N7000 | Package_TO_SOT_THT:TO-92_Inline | Q1 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3 |
| 1 | ATmega328-P | Package_DIP:DIP-28_W7.62mm | U1 |
| 1 | Buzzer | Capacitor_THT:CP_Radial_D4.0mm_P2.00mm | BZ1 |
| 1 | Conn_01x06 | Connector_Wago:Wago_734-138_1x08_P3.50mm_Vertical | J16 |
| 1 | Conn_02x03_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J14 |
| 1 | Crystal | Crystal:Crystal_HC49-U_Vertical | Y1 |
| 1 | FerriteBead | Ferrite_THT:LairdTech_28C0236-0JW-10 | FB1 |
| 1 | L293 | Package_DIP:DIP-16_W7.62mm | U4 |
| 1 | L7805 | Package_TO_SOT_THT:TO-220-3_Vertical | U2 |
| 1 | Push to ON Switch (Momentary) | Button_Switch_THT:SW_PUSH_6mm | SW3 |
| 1 | Screw_Terminal_01x06 | TerminalBlock:TerminalBlock_Xinya_XY308-2.54-6P_1x06_P2.54mm_Horizontal | J7 |
| 1 | ULN2803A | Package_DIP:DIP-18_W7.62mm | U5 |
| 1 | push to lock switch | Button_Switch_THT:SW_PUSH_6mm_H4.3mm | SW2 |
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Questions
How big is the Task 1 microcontroller PCB?
It measures 120 × 120 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Task 1 microcontroller use?
37 parts, built around the ATMEGA328-PU, AMS1117-3.3, L7805 and ULN2803A. 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.
Where can I download the Task 1 microcontroller KiCad files?
From the TanviTalvadekar/IPD-Task-1-Microcontroller-PCB- repository on GitHub, at the commit this page was made from: the board is task 1 microcontroller.kicad_pcb and its schematic task 1 microcontroller.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Task 1 microcontroller design in my own project?
Its repository states no licence, so its author keeps all rights: ask TanviTalvadekar before reusing the design.