component
ESP32-S2-SOLO-U-N4
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
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388
{
"slug": "esp32-s2-solo-u-n4",
"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-n4",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"esp32-s2-solo-u-n4.kicad_sym",
"esp32-s2-solo-u-n4.kicad_mod",
"esp32-s2-solo-u-n4.glb",
"esp32-s2-solo-u-n4.step",
"esp32-s2-solo-u-n4.lbr",
"docs/hero.png",
"docs/esp32-s2-solo-u-n4-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html"
],
"component": {
"mpn": "ESP32-S2-SOLO-U-N4",
"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-n4.kicad_sym",
"footprint": "esp32-s2-solo-u-n4.kicad_mod",
"model_3d": "esp32-s2-solo-u-n4-etched.glb",
"model_3d_plain": "esp32-s2-solo-u-n4.glb",
"model_3d_step": "esp32-s2-solo-u-n4-etched.step",
"model_3d_step_plain": "esp32-s2-solo-u-n4.step",
"lbr": "esp32-s2-solo-u-n4.lbr"
},
"distributor_links": {
"digikey": "1965-ESP32-S2-SOLO-U-N4TR-ND",
"mouser": "356-ESP32-S2-SOLOUN4"
},
"distributor_check": {
"checked_at": "2026-10-28T17:45:52Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "1965-ESP32-S2-SOLO-U-N4TR-ND",
"status": "found"
},
"mouser": {
"pn": "356-ESP32-S2-SOLOUN4",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "2",
"name": "3V3",
"type": "power_in",
"description": "Power supply input; the recommended VDD33 range is 3.0 V to 3.6 V with 3.3 V typical."
},
{
"number": "3",
"name": "EN",
"type": "input",
"description": "Chip enable: high turns the chip on and low powers it off; the pin must not be left floating."
},
{
"number": "4",
"name": "IO4",
"type": "bidirectional",
"description": "Multifunction I/O: RTC_GPIO4, GPIO4, TOUCH4, ADC1_CH3."
},
{
"number": "5",
"name": "IO5",
"type": "bidirectional",
"description": "Multifunction I/O: RTC_GPIO5, GPIO5, TOUCH5, ADC1_CH4."
},
{
"number": "6",
"name": "IO6",
"type": "bidirectional",
"description": "Multifunction I/O: RTC_GPIO6, GPIO6, TOUCH6, ADC1_CH5."
},
{
"number": "7",
"name": "IO7",
"type": "bidirectional",
"description": "Multifunction I/O: RTC_GPIO7, GPIO7, TOUCH7, ADC1_CH6."
},
{
"number": "8",
"name": "IO15",
"type": "bidirectional",
"description": "Multifunction I/O: RTC_GPIO15, GPIO15, U0RTS, ADC2_CH4, XTAL_32K_P."
},
{
"number": "9",
"name": "IO16",
"type": "bidirectional",
"description": "Multifunction I/O: RTC_GPIO16, GPIO16, U0CTS, ADC2_CH5, XTAL_32K_N."
},
{
"number": "10",
"name": "IO17",
"type": "bidirectional",
"description": "Multifunction I/O: RTC_GPIO17, GPIO17, U1TXD, ADC2_CH6, DAC_1."
},
{
"number": "11",
"name": "IO18",
"type": "bidirectional",
"description": "Multifunction I/O: RTC_GPIO18, GPIO18, U1RXD, ADC2_CH7, DAC_2, CLK_OUT3."
},
{
"number": "12",
"name": "IO8",
"type": "bidirectional",
"description": "Multifunction I/O: RTC_GPIO8, GPIO8, TOUCH8, ADC1_CH7."
},
{
"number": "13",
"name": "IO19",
"type": "bidirectional",
"description": "Multifunction I/O: RTC_GPIO19, GPIO19, U1RTS, ADC2_CH8, CLK_OUT2, USB_D-."
},
{
"number": "14",
"name": "IO20",
"type": "bidirectional",
"description": "Multifunction I/O: RTC_GPIO20, GPIO20, U1CTS, ADC2_CH9, CLK_OUT1, USB_D+."
},
{
"number": "15",
"name": "IO3",
"type": "bidirectional",
"description": "Multifunction I/O: RTC_GPIO3, GPIO3, TOUCH3, ADC1_CH2."
},
{
"number": "16",
"name": "IO46",
"type": "input",
"description": "Input-only GPIO46; also a strapping pin that selects the chip boot mode and ROM message printing at reset."
},
{
"number": "17",
"name": "IO9",
"type": "bidirectional",
"description": "Multifunction I/O: RTC_GPIO9, GPIO9, TOUCH9, ADC1_CH8, FSPIHD."
},
{
"number": "18",
"name": "IO10",
"type": "bidirectional",
"description": "Multifunction I/O: RTC_GPIO10, GPIO10, TOUCH10, ADC1_CH9, FSPICS0, FSPIIO4."
},
{
"number": "19",
"name": "IO11",
"type": "bidirectional",
"description": "Multifunction I/O: RTC_GPIO11, GPIO11, TOUCH11, ADC2_CH0, FSPID, FSPIIO5."
},
{
"number": "20",
"name": "IO12",
"type": "bidirectional",
"description": "Multifunction I/O: RTC_GPIO12, GPIO12, TOUCH12, ADC2_CH1, FSPICLK, FSPIIO6."
},
{
"number": "21",
"name": "IO13",
"type": "bidirectional",
"description": "Multifunction I/O: RTC_GPIO13, GPIO13, TOUCH13, ADC2_CH2, FSPIQ, FSPIIO7."
},
{
"number": "22",
"name": "IO14",
"type": "bidirectional",
"description": "Multifunction I/O: RTC_GPIO14, GPIO14, TOUCH14, ADC2_CH3, FSPIWP, FSPIDQS."
},
{
"number": "23",
"name": "IO21",
"type": "bidirectional",
"description": "Multifunction I/O: RTC_GPIO21, GPIO21."
},
{
"number": "24",
"name": "IO33",
"type": "bidirectional",
"description": "Multifunction I/O: SPIIO4, GPIO33, FSPIHD."
},
{
"number": "25",
"name": "IO34",
"type": "bidirectional",
"description": "Multifunction I/O: SPIIO5, GPIO34, FSPICS0."
},
{
"number": "26",
"name": "IO45",
"type": "bidirectional",
"description": "GPIO45; also a strapping pin that selects the VDD_SPI voltage source at reset."
},
{
"number": "27",
"name": "IO0",
"type": "bidirectional",
"description": "RTC_GPIO0, GPIO0; strapping pin for chip boot mode with a default internal pull-up."
},
{
"number": "28",
"name": "IO35",
"type": "bidirectional",
"description": "Multifunction I/O: SPIIO6, GPIO35, FSPID."
},
{
"number": "29",
"name": "IO36",
"type": "bidirectional",
"description": "Multifunction I/O: SPIIO7, GPIO36, FSPICLK."
},
{
"number": "30",
"name": "IO37",
"type": "bidirectional",
"description": "Multifunction I/O: SPIDQS, GPIO37, FSPIQ."
},
{
"number": "31",
"name": "IO38",
"type": "bidirectional",
"description": "Multifunction I/O: GPIO38, FSPIWP."
},
{
"number": "32",
"name": "IO39",
"type": "bidirectional",
"description": "Multifunction I/O: MTCK, GPIO39, CLK_OUT3."
},
{
"number": "33",
"name": "IO40",
"type": "bidirectional",
"description": "Multifunction I/O: MTDO, GPIO40, CLK_OUT2."
},
{
"number": "34",
"name": "IO41",
"type": "bidirectional",
"description": "Multifunction I/O: MTDI, GPIO41, CLK_OUT1."
},
{
"number": "35",
"name": "IO42",
"type": "bidirectional",
"description": "Multifunction I/O: MTMS, GPIO42."
},
{
"number": "36",
"name": "RXD0",
"type": "bidirectional",
"description": "UART0 receive (U0RXD), also GPIO44 and CLK_OUT2."
},
{
"number": "37",
"name": "TXD0",
"type": "bidirectional",
"description": "UART0 transmit (U0TXD), also GPIO43 and CLK_OUT1; the default output for ROM boot messages."
},
{
"number": "38",
"name": "IO2",
"type": "bidirectional",
"description": "Multifunction I/O: RTC_GPIO2, GPIO2, TOUCH2, ADC1_CH1."
},
{
"number": "39",
"name": "IO1",
"type": "bidirectional",
"description": "Multifunction I/O: RTC_GPIO1, GPIO1, TOUCH1, ADC1_CH0."
},
{
"number": "40",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "41",
"name": "EPAD",
"type": "power_in",
"description": "Ground exposed pad; soldering it to the base board ground is optional but optimizes thermal performance."
}
],
"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: Package hint says 40-SMD, but the datasheet pin table lists 41 pins: pins 1-40 plus EPAD (pin 41, gr; The MPN ESP32-S2-SOLO-U-N4 is listed as End of Life in Table 2 and the revision history. The pin tab; The pin 13 and 14 USB labels (USB_D- and USB_D+) are partly broken in the extracted text. USB_D- is "
],
"pages_sent": 20,
"cost_usd": 0.0721,
"at": "2026-10-28T17:46:17"
},
"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-n4.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": "5c9c272f030af4035a793874612f218233366cf4b1a5a2ad12d862821f4ac4a0",
"checked": "2026-10-28",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "esp32-s2-solo-u-n4-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": "694919485da2909891b22f5dc0eabda6632e571fb50a200fe272fe4567631b66",
"checked": "2026-10-28",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}