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{
"version": 1,
"parts": [
{
"ref": "J1",
"libId": "Connector:USB_B_Micro",
"value": "USB_B_Micro",
"footprint": "Connector_USB:USB_Micro-B_Amphenol_10118193-0001LF_Horizontal",
"group": "Power Input"
},
{
"ref": "F1",
"libId": "Device:Polyfuse",
"value": "500mA",
"footprint": "Fuse:Fuse_1206_3216Metric",
"group": "Power Input"
},
{
"ref": "CP1",
"libId": "Device:C_Polarized",
"value": "47u/16V",
"footprint": "Capacitor_SMD:CP_Elec_6.3x7.7",
"group": "Power Input"
},
{
"ref": "U2",
"libId": "Regulator_Linear:AMS1117-3.3",
"value": "AMS1117-3.3",
"footprint": "Package_TO_SOT_SMD:SOT-223-3_TabPin2",
"group": "Regulation"
},
{
"ref": "C1",
"libId": "Device:C",
"value": "10u/16V",
"footprint": "Capacitor_SMD:C_0805_2012Metric",
"group": "Regulation"
},
{
"ref": "C2",
"libId": "Device:C",
"value": "10u/16V",
"footprint": "Capacitor_SMD:C_0805_2012Metric",
"group": "Regulation"
},
{
"ref": "U1",
"libId": "MCU_Microchip_ATmega:ATmega328P-A",
"value": "ATmega328P-A",
"footprint": "Package_QFP:TQFP-32_7x7mm_P0.8mm",
"group": "MCU"
},
{
"ref": "C3",
"libId": "Device:C",
"value": "100n",
"footprint": "Capacitor_SMD:C_0603_1608Metric",
"group": "MCU"
},
{
"ref": "C4",
"libId": "Device:C",
"value": "100n",
"footprint": "Capacitor_SMD:C_0603_1608Metric",
"group": "MCU"
},
{
"ref": "C6",
"libId": "Device:C",
"value": "100n",
"footprint": "Capacitor_SMD:C_0603_1608Metric",
"group": "MCU"
},
{
"ref": "R1",
"libId": "Device:R",
"value": "10k",
"footprint": "Resistor_SMD:R_0603_1608Metric",
"group": "MCU"
},
{
"ref": "R4",
"libId": "Device:R",
"value": "100k",
"footprint": "Resistor_SMD:R_0603_1608Metric",
"group": "MCU"
},
{
"ref": "R5",
"libId": "Device:R",
"value": "47k",
"footprint": "Resistor_SMD:R_0603_1608Metric",
"group": "MCU"
},
{
"ref": "Y1",
"libId": "Device:Crystal",
"value": "16MHz",
"footprint": "Crystal:Crystal_SMD_HC49-SD",
"group": "Clock"
},
{
"ref": "C7",
"libId": "Device:C",
"value": "22p",
"footprint": "Capacitor_SMD:C_0603_1608Metric",
"group": "Clock"
},
{
"ref": "C8",
"libId": "Device:C",
"value": "22p",
"footprint": "Capacitor_SMD:C_0603_1608Metric",
"group": "Clock"
},
{
"ref": "J2",
"libId": "Connector_Generic:Conn_01x04",
"value": "Conn_01x04",
"footprint": "Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical",
"group": "IO Headers"
},
{
"ref": "R2",
"libId": "Device:R",
"value": "4k7",
"footprint": "Resistor_SMD:R_0603_1608Metric",
"group": "IO Headers"
},
{
"ref": "R6",
"libId": "Device:R",
"value": "4k7",
"footprint": "Resistor_SMD:R_0603_1608Metric",
"group": "IO Headers"
},
{
"ref": "J3",
"libId": "Connector_Generic:Conn_01x06",
"value": "Conn_01x06",
"footprint": "Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical",
"group": "IO Headers"
},
{
"ref": "J4",
"libId": "Connector_Generic:Conn_02x03_Odd_Even",
"value": "Conn_02x03_Odd_Even",
"footprint": "Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical",
"group": "IO Headers"
},
{
"ref": "R3",
"libId": "Device:R",
"value": "1k",
"footprint": "Resistor_SMD:R_0603_1608Metric",
"group": "Status"
},
{
"ref": "D1",
"libId": "Device:LED",
"value": "green",
"footprint": "LED_SMD:LED_0603_1608Metric",
"group": "Status"
}
],
"nets": [
{
"name": "VBUS",
"pins": [
"J1.1",
"F1.1"
]
},
{
"name": "VBUS_F",
"pins": [
"F1.2",
"CP1.1",
"C1.1",
"U2.3",
"R4.1"
]
},
{
"name": "+3V3",
"pins": [
"U2.2",
"C2.1",
"U1.4",
"U1.6",
"U1.18",
"C3.1",
"C4.1",
"R1.1",
"R2.1",
"R6.1",
"R3.1",
"J2.1",
"J3.3",
"J4.2"
]
},
{
"name": "GND",
"pins": [
"J1.5",
"J1.SH",
"CP1.2",
"C1.2",
"C2.2",
"C3.2",
"C4.2",
"C6.2",
"C7.2",
"C8.2",
"U1.3",
"U1.5",
"U1.21",
"U2.1",
"R5.2",
"D1.1",
"J2.2",
"J3.1",
"J4.6"
]
},
{
"name": "nRESET",
"pins": [
"U1.29",
"R1.2",
"J4.5"
]
},
{
"name": "XTAL1",
"pins": [
"U1.7",
"Y1.1",
"C7.1"
]
},
{
"name": "XTAL2",
"pins": [
"U1.8",
"Y1.2",
"C8.1"
]
},
{
"name": "AREF",
"pins": [
"U1.20",
"C6.1"
]
},
{
"name": "VSENSE",
"pins": [
"R4.2",
"R5.1",
"U1.19"
]
},
{
"name": "SDA",
"pins": [
"U1.27",
"R2.2",
"J2.3"
]
},
{
"name": "SCL",
"pins": [
"U1.28",
"R6.2",
"J2.4"
]
},
{
"name": "UART_RX",
"pins": [
"U1.30",
"J3.4"
]
},
{
"name": "UART_TX",
"pins": [
"U1.31",
"J3.5"
]
},
{
"name": "ISP_MISO",
"pins": [
"U1.16",
"J4.1"
]
},
{
"name": "ISP_SCK",
"pins": [
"U1.17",
"J4.3"
]
},
{
"name": "ISP_MOSI",
"pins": [
"U1.15",
"J4.4"
]
},
{
"name": "LED_A",
"pins": [
"R3.2",
"D1.2"
]
}
],
"noConnect": [
"J1.2",
"J1.3",
"J1.4",
"J3.2",
"J3.6",
"U1.1",
"U1.2",
"U1.9",
"U1.10",
"U1.11",
"U1.12",
"U1.13",
"U1.14",
"U1.22",
"U1.23",
"U1.24",
"U1.25",
"U1.26",
"U1.32"
],
"hints": {
"groupOrder": [
"Power Input",
"Regulation",
"MCU",
"Clock",
"IO Headers",
"Status"
],
"date": "2026-08-04"
}
}