component
ESP32-S2-SOLO-U-N4R2
Public Made by Adomby adom
Espressif Systems RF and Wireless, 40-SMD Module. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "esp32-s2-solo-u-n4r2",
"version": "0.1.0",
"type": "component",
"description": "Espressif Systems RF and Wireless, 40-SMD Module. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"rf and wireless",
"esp32-s2-solo-u-n4r2",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"esp32-s2-solo-u-n4r2.kicad_sym",
"esp32-s2-solo-u-n4r2.kicad_mod",
"esp32-s2-solo-u-n4r2.glb",
"esp32-s2-solo-u-n4r2.step",
"esp32-s2-solo-u-n4r2.lbr",
"docs/hero.png",
"docs/esp32-s2-solo-u-n4r2-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html"
],
"component": {
"mpn": "ESP32-S2-SOLO-U-N4R2",
"manufacturer": "Espressif Systems",
"package": "40-SMD Module",
"pin_count": 41,
"category": "RF and Wireless",
"subcategory": "RF and Wireless",
"datasheet": "https://www.espressif.com/sites/default/files/documentation/esp32-s2-solo_esp32-s2-solo-u_datasheet_en.pdf",
"parts": {
"symbol": "esp32-s2-solo-u-n4r2.kicad_sym",
"footprint": "esp32-s2-solo-u-n4r2.kicad_mod",
"model_3d": "esp32-s2-solo-u-n4r2-etched.glb",
"model_3d_plain": "esp32-s2-solo-u-n4r2.glb",
"model_3d_step": "esp32-s2-solo-u-n4r2-etched.step",
"model_3d_step_plain": "esp32-s2-solo-u-n4r2.step",
"lbr": "esp32-s2-solo-u-n4r2.lbr"
},
"distributor_links": {
"digikey": "1965-ESP32-S2-SOLO-U-N4R2TR-ND",
"mouser": "356-ESP32S2SOLOUN4R2"
},
"distributor_check": {
"checked_at": "2026-10-28T17:47:09Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "1965-ESP32-S2-SOLO-U-N4R2TR-ND",
"status": "found"
},
"mouser": {
"pn": "356-ESP32S2SOLOUN4R2",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "GND",
"type": "power_in",
"description": "Ground pin of the module."
},
{
"number": "2",
"name": "3V3",
"type": "power_in",
"description": "Module power supply input; the datasheet's recommended supply range is 3.0 V to 3.6 V with 3.3 V typical."
},
{
"number": "3",
"name": "EN",
"type": "input",
"description": "Chip enable: high enables the chip and low powers it off, and the pin must not be left floating."
},
{
"number": "4",
"name": "IO4",
"type": "bidirectional",
"description": "General-purpose I/O also providing RTC_GPIO4, TOUCH4 and ADC1_CH3 functions."
},
{
"number": "5",
"name": "IO5",
"type": "bidirectional",
"description": "General-purpose I/O also providing RTC_GPIO5, TOUCH5 and ADC1_CH4 functions."
},
{
"number": "6",
"name": "IO6",
"type": "bidirectional",
"description": "General-purpose I/O also providing RTC_GPIO6, TOUCH6 and ADC1_CH5 functions."
},
{
"number": "7",
"name": "IO7",
"type": "bidirectional",
"description": "General-purpose I/O also providing RTC_GPIO7, TOUCH7 and ADC1_CH6 functions."
},
{
"number": "8",
"name": "IO15",
"type": "bidirectional",
"description": "General-purpose I/O also providing RTC_GPIO15, U0RTS, ADC2_CH4 and XTAL_32K_P functions."
},
{
"number": "9",
"name": "IO16",
"type": "bidirectional",
"description": "General-purpose I/O also providing RTC_GPIO16, U0CTS, ADC2_CH5 and XTAL_32K_N functions."
},
{
"number": "10",
"name": "IO17",
"type": "bidirectional",
"description": "General-purpose I/O also providing RTC_GPIO17, U1TXD, ADC2_CH6 and DAC_1 functions."
},
{
"number": "11",
"name": "IO18",
"type": "bidirectional",
"description": "General-purpose I/O also providing RTC_GPIO18, U1RXD, ADC2_CH7, DAC_2 and CLK_OUT3 functions."
},
{
"number": "12",
"name": "IO8",
"type": "bidirectional",
"description": "General-purpose I/O also providing RTC_GPIO8, TOUCH8 and ADC1_CH7 functions."
},
{
"number": "13",
"name": "IO19",
"type": "bidirectional",
"description": "General-purpose I/O also providing RTC_GPIO19, U1RTS, ADC2_CH8, CLK_OUT2 and USB_D- functions."
},
{
"number": "14",
"name": "IO20",
"type": "bidirectional",
"description": "General-purpose I/O also providing RTC_GPIO20, U1CTS, ADC2_CH9, CLK_OUT1 and USB_D+ functions."
},
{
"number": "15",
"name": "IO3",
"type": "bidirectional",
"description": "General-purpose I/O also providing RTC_GPIO3, TOUCH3 and ADC1_CH2 functions."
},
{
"number": "16",
"name": "IO46",
"type": "input",
"description": "Input-only GPIO46 that also serves as a strapping pin controlling ROM message printing (default pull-down, bit value 0)."
},
{
"number": "17",
"name": "IO9",
"type": "bidirectional",
"description": "General-purpose I/O also providing RTC_GPIO9, TOUCH9, ADC1_CH8 and FSPIHD functions."
},
{
"number": "18",
"name": "IO10",
"type": "bidirectional",
"description": "General-purpose I/O also providing RTC_GPIO10, TOUCH10, ADC1_CH9, FSPICS0 and FSPIIO4 functions."
},
{
"number": "19",
"name": "IO11",
"type": "bidirectional",
"description": "General-purpose I/O also providing RTC_GPIO11, TOUCH11, ADC2_CH0, FSPID and FSPIIO5 functions."
},
{
"number": "20",
"name": "IO12",
"type": "bidirectional",
"description": "General-purpose I/O also providing RTC_GPIO12, TOUCH12, ADC2_CH1, FSPICLK and FSPIIO6 functions."
},
{
"number": "21",
"name": "IO13",
"type": "bidirectional",
"description": "General-purpose I/O also providing RTC_GPIO13, TOUCH13, ADC2_CH2, FSPIQ and FSPIIO7 functions."
},
{
"number": "22",
"name": "IO14",
"type": "bidirectional",
"description": "General-purpose I/O also providing RTC_GPIO14, TOUCH14, ADC2_CH3, FSPIWP and FSPIDQS functions."
},
{
"number": "23",
"name": "IO21",
"type": "bidirectional",
"description": "General-purpose I/O also providing the RTC_GPIO21 function."
},
{
"number": "24",
"name": "IO33",
"type": "bidirectional",
"description": "General-purpose I/O also providing SPIIO4 and FSPIHD functions."
},
{
"number": "25",
"name": "IO34",
"type": "bidirectional",
"description": "General-purpose I/O also providing SPIIO5 and FSPICS0 functions."
},
{
"number": "26",
"name": "IO45",
"type": "bidirectional",
"description": "General-purpose I/O that also serves as a strapping pin controlling VDD_SPI voltage (default pull-down, bit value 0)."
},
{
"number": "27",
"name": "IO0",
"type": "bidirectional",
"description": "General-purpose I/O also providing RTC_GPIO0; it is a strapping pin controlling chip boot mode (default pull-up, bit value 1)."
},
{
"number": "28",
"name": "IO35",
"type": "bidirectional",
"description": "General-purpose I/O also providing SPIIO6 and FSPID functions."
},
{
"number": "29",
"name": "IO36",
"type": "bidirectional",
"description": "General-purpose I/O also providing SPIIO7 and FSPICLK functions."
},
{
"number": "30",
"name": "IO37",
"type": "bidirectional",
"description": "General-purpose I/O also providing SPIDQS and FSPIQ functions."
},
{
"number": "31",
"name": "IO38",
"type": "bidirectional",
"description": "General-purpose I/O also providing the FSPIWP function."
},
{
"number": "32",
"name": "IO39",
"type": "bidirectional",
"description": "General-purpose I/O also providing MTCK and CLK_OUT3 functions."
},
{
"number": "33",
"name": "IO40",
"type": "bidirectional",
"description": "General-purpose I/O also providing MTDO and CLK_OUT2 functions."
},
{
"number": "34",
"name": "IO41",
"type": "bidirectional",
"description": "General-purpose I/O also providing MTDI and CLK_OUT1 functions."
},
{
"number": "35",
"name": "IO42",
"type": "bidirectional",
"description": "General-purpose I/O also providing the MTMS function."
},
{
"number": "36",
"name": "RXD0",
"type": "bidirectional",
"description": "General-purpose I/O also providing the U0RXD (UART0 receive) function, GPIO44 and CLK_OUT2."
},
{
"number": "37",
"name": "TXD0",
"type": "bidirectional",
"description": "General-purpose I/O also providing the U0TXD (UART0 transmit) function, GPIO43 and CLK_OUT1."
},
{
"number": "38",
"name": "IO2",
"type": "bidirectional",
"description": "General-purpose I/O also providing RTC_GPIO2, TOUCH2 and ADC1_CH1 functions."
},
{
"number": "39",
"name": "IO1",
"type": "bidirectional",
"description": "General-purpose I/O also providing RTC_GPIO1, TOUCH1 and ADC1_CH0 functions."
},
{
"number": "40",
"name": "GND",
"type": "power_in",
"description": "Ground pin of the module."
},
{
"number": "41",
"name": "EPAD",
"type": "power_in",
"description": "Exposed ground pad; soldering it to the base-board ground is optional and can improve thermal performance if the paste amount is controlled."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The supplied package hint says 40 pins, but the datasheet states 'The module has 41 pins' (Table 3 l; The datasheet covers both ESP32-S2-SOLO and ESP32-S2-SOLO-U and the pin table (Table 3) is shared. T; The datasheet type column uses I/O/T (T = high impedance per footnote). These were mapped to KiCad '"
],
"pages_sent": 20,
"cost_usd": 0.0735,
"at": "2026-10-28T17:47:35"
},
"datasheet": {
"url": "https://www.espressif.com/sites/default/files/documentation/esp32-s2-solo_esp32-s2-solo-u_datasheet_en.pdf",
"pages": 34,
"sha256": "dbfee97a9809455c",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 41,
"described": 41,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "esp32-s2-solo-u-n4r2.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
18.0,
25.5,
3.1
],
"zmin_mm": 0.0,
"centre_offset_mm": 3.77,
"footprint_binding": "identity",
"sha256": "98b1af187c98047964186c7d25224c0d8b7396e4912b1b81824278702a906953",
"checked": "2026-10-28",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "esp32-s2-solo-u-n4r2-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
18.0,
25.5,
3.1
],
"zmin_mm": 0.0,
"centre_offset_mm": 3.77,
"footprint_binding": "identity",
"sha256": "68932d37033b4c75733e6e68350a9eb67860fc47b8c7ed67dc377c4fe6ab3293",
"checked": "2026-10-28",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}