diff --git a/boards/_base/pcb/afw121t.json b/boards/_base/pcb/afw121t.json
new file mode 100644
index 000000000..c3b606893
--- /dev/null
+++ b/boards/_base/pcb/afw121t.json
@@ -0,0 +1,90 @@
+{
+	"pcb": {
+		"templates": [
+			"99iot-21p",
+			"pcb-blue-light",
+			"rf-type1"
+		],
+		"scale": 16,
+		"vars": {
+			"TRACE_COLOR": "#FAFD9D"
+		},
+		"pinout_hidden": "I2S,TRIG,WAKE,CTS,RTS,SD",
+		"pinout": {
+			"1": {
+				"GND": null
+			},
+			"2": {
+				"CTRL": "RF_O"
+			},
+			"3": {
+				"GND": null
+			},
+			"4": {
+				"NC": null
+			},
+			"5": {
+				"CTRL": "CEN"
+			},
+			"6": {
+				"IC": 13,
+				"ARD": "D0"
+			},
+			"7": {
+				"IC": 14,
+				"ARD": "D1"
+			},
+			"8": {
+				"IC": 16,
+				"ARD": "D2"
+			},
+			"9": {
+				"IC": 17,
+				"ARD": "D3"
+			},
+			"10": {
+				"GND": null
+			},
+			"11": {
+				"PWR": 3.3
+			},
+			"12": {
+				"GND": null
+			},
+			"13": {
+				"NC": null
+			},
+			"14": {
+				"IC": 28,
+				"ARD": "D5"
+			},
+			"15": {
+				"IC": 29,
+				"ARD": "D6"
+			},
+			"16": {
+				"IC": 30,
+				"ARD": "D7"
+			},
+			"17": {
+				"IC": 31,
+				"ARD": "D8"
+			},
+			"18": {
+				"IC": 32,
+				"ARD": "D9"
+			},
+			"19": {
+				"IC": 1,
+				"ARD": "D10"
+			},
+			"20": {
+				"IC": 2,
+				"ARD": "D4"
+			},
+			"21": {
+				"GND": null
+			}
+		}
+	}
+}
diff --git a/boards/_base/realtek-ambz-1mb-468k.json b/boards/_base/realtek-ambz-1mb-468k.json
new file mode 100644
index 000000000..89f1a7010
--- /dev/null
+++ b/boards/_base/realtek-ambz-1mb-468k.json
@@ -0,0 +1,16 @@
+{
+	"build": {
+		"amb_boot_all": "boot_all_77F7.bin"
+	},
+	"flash": {
+		"ota1": "0x00B000+0x75000",
+		"ota2": "0x080000+0x75000",
+		"kvs": "0x0F5000+0x4000",
+		"userdata": "0x0F9000+0x7000"
+	},
+	"upload": {
+		"flash_size": 1048576,
+		"maximum_size": 479232
+	}
+}
+
diff --git a/boards/afw121t.json b/boards/afw121t.json
new file mode 100644
index 000000000..8b12c4649
--- /dev/null
+++ b/boards/afw121t.json
@@ -0,0 +1,24 @@
+{
+	"_base": [
+		"realtek-ambz",
+		"realtek-ambz-1mb-468k",
+		"realtek-ambz-bx",
+		"ic/rtl8710bn",
+		"pcb/afw121t"
+	],
+	"build": {
+		"mcu": "rtl8710bx",
+		"variant": "afw121t"
+	},
+	"name": "AFW121T",
+	"url": "https://item.szlcsc.com/357903.html?fromZone=l_b__%2522brand%2522",
+	"vendor": "99iot(Shenzhen)co.,ltd",
+	"pcb": {
+		"symbol": "AFW121T"
+	},
+	"doc": {
+		"links": {
+			"Vendor datasheet": "https://item.szlcsc.com/datasheet/AFW121TI-AY1LED1/357903.html"
+		}
+	}
+}
diff --git a/boards/templates/99iot-21p.json b/boards/templates/99iot-21p.json
new file mode 100644
index 000000000..6d0c05061
--- /dev/null
+++ b/boards/templates/99iot-21p.json
@@ -0,0 +1,142 @@
+{
+	"name": "99iot-21p",
+	"title": "99iot 21-pin modules",
+	"width": 18,
+	"height": 22,
+	"vars": {
+		"PINTYPE_VERT": "pin_vert_cast_nohole",
+		"PINTYPE_HORZ": "pin_horz_cast_nohole",
+		"RASTER": 1.2,
+		"RF_W": 18,
+		"RF_H": 3.9
+	},
+	"front": [
+		{
+			"comment": "PCB soldermask",
+			"type": "rect",
+			"pos": "0,0",
+			"size": "18,22",
+			"preset": "${MASK_PRESET}"
+		},
+		{
+			"comment": "Metal shielding",
+			"type": "rect",
+			"pos": "1.105,7",
+			"size": "15.79,14.58",
+			"preset": "shield"
+		},
+		{
+			"comment": "Pins (1-3)",
+			"id": "left_t",
+			"name": "r_pins_vert",
+			"repeat": 3,
+			"pos": "0,3.9",
+			"vars": {
+				"PINDIR": "left"
+			}
+		},
+		{
+			"comment": "Pins (3-10)",
+			"id": "left_b",
+			"name": "r_pins_vert",
+			"repeat": 7,
+			"pos": "0,12.8",
+			"vars": {
+				"PINDIR": "left"
+			}
+		},
+		{
+			"comment": "Pins (10-20)",
+			"id": "right_b",
+			"name": "r_pins_vert",
+			"repeat": 10,
+			"pos": "18,9.2",
+			"vars": {
+				"PINDIR": "right"
+			}
+		},
+		{
+			"comment": "Pin 21",
+			"id": "right_t",
+			"name": "r_pins_vert",
+			"repeat": 1,
+			"pos": "18,7",
+			"vars": {
+				"PINDIR": "right"
+			}
+		}
+	],
+	"back": [
+		{
+			"comment": "PCB soldermask",
+			"type": "rect",
+			"pos": "0,0",
+			"size": "18,22",
+			"preset": "${MASK_PRESET}"
+		},
+		{
+			"comment": "Pins (1-3)",
+			"id": "left_t",
+			"name": "r_pins_vert",
+			"repeat": 3,
+			"pos": "0,3.9",
+			"vars": {
+				"PINDIR": "left"
+			}
+		},
+		{
+			"comment": "Pins (3-10)",
+			"id": "left_b",
+			"name": "r_pins_vert",
+			"repeat": 7,
+			"pos": "0,12.8",
+			"vars": {
+				"PINDIR": "left"
+			}
+		},
+		{
+			"comment": "Pins (10-20)",
+			"id": "right_b",
+			"name": "r_pins_vert",
+			"repeat": 10,
+			"pos": "18,9.2",
+			"vars": {
+				"PINDIR": "right"
+			}
+		},
+		{
+			"comment": "Pin 21",
+			"id": "right_t",
+			"name": "r_pins_vert",
+			"repeat": 1,
+			"pos": "18,7",
+			"vars": {
+				"PINDIR": "right"
+			}
+		}
+	],
+	"pads": {
+		"1": "99iot-21p.front.left_t.pin1",
+		"2": "99iot-21p.front.left_t.pin2",
+		"3": "99iot-21p.front.left_t.pin3",
+		"4": "99iot-21p.front.left_b.pin1",
+		"5": "99iot-21p.front.left_b.pin2",
+		"6": "99iot-21p.front.left_b.pin3",
+		"7": "99iot-21p.front.left_b.pin4",
+		"8": "99iot-21p.front.left_b.pin5",
+		"9": "99iot-21p.front.left_b.pin6",
+		"10": "99iot-21p.front.left_b.pin7",
+		"11": "99iot-21p.front.right_b.pin10",
+		"12": "99iot-21p.front.right_b.pin9",
+		"13": "99iot-21p.front.right_b.pin8",
+		"14": "99iot-21p.front.right_b.pin7",
+		"15": "99iot-21p.front.right_b.pin6",
+		"16": "99iot-21p.front.right_b.pin5",
+		"17": "99iot-21p.front.right_b.pin4",
+		"18": "99iot-21p.front.right_b.pin3",
+		"19": "99iot-21p.front.right_b.pin2",
+		"20": "99iot-21p.front.right_b.pin1",
+		"21": "99iot-21p.front.right_t.pin1"
+	},
+	"test_pads": {}
+}
diff --git a/boards/variants/afw121t.c b/boards/variants/afw121t.c
new file mode 100644
index 000000000..12b634593
--- /dev/null
+++ b/boards/variants/afw121t.c
@@ -0,0 +1,48 @@
+/* This file was auto-generated from afw121t.json using boardgen */
+
+#include <Arduino.h>
+
+#ifdef LT_VARIANT_INCLUDE
+#include LT_VARIANT_INCLUDE
+#endif
+
+// clang-format off
+PinInfo lt_arduino_pin_info_list[PINS_COUNT] = {
+	// D0: PA14, PWM0, SWCLK
+	{PA_14, PIN_GPIO | PIN_IRQ | PIN_PWM | PIN_SWD,                                PIN_NONE, 0},
+	// D1: PA15, PWM1, SWDIO
+	{PA_15, PIN_GPIO | PIN_IRQ | PIN_PWM | PIN_SWD,                                PIN_NONE, 0},
+	// D2: PA00, PWM2
+	{PA_0,  PIN_GPIO | PIN_IRQ | PIN_PWM,                                          PIN_NONE, 0},
+	// D3: PA12, PWM3
+	{PA_12, PIN_GPIO | PIN_IRQ | PIN_PWM,                                          PIN_NONE, 0},
+	// D4: PA29, UART2_RX, I2C0_SCL, PWM4
+	{PA_29, PIN_GPIO | PIN_IRQ | PIN_PWM | PIN_I2C | PIN_UART,                     PIN_NONE, 0},
+	// D5: PA05, PWM4, WAKE1
+	{PA_5,  PIN_GPIO | PIN_IRQ | PIN_PWM,                                          PIN_NONE, 0},
+	// D6: PA18, UART0_RX, SPI0_SCK, SPI1_SCK, I2C1_SCL, SD_D2, TMR4_TRIG, I2S0_MCK, WAKE0
+	{PA_18, PIN_GPIO | PIN_IRQ | PIN_I2C | PIN_I2S | PIN_SPI | PIN_UART,           PIN_NONE, 0},
+	// D7: PA19, ADC1, UART0_CTS, SPI0_CS, SPI1_CS, I2C0_SDA, SD_D3, TMR5_TRIG, I2S0_TX
+	{PA_19, PIN_GPIO | PIN_IRQ | PIN_I2C | PIN_I2S | PIN_SPI | PIN_UART,           PIN_NONE, 0},
+	// D8: PA22, UART0_RTS, SPI0_MISO, SPI1_MISO, I2C0_SCL, SD_D0, PWM5, I2S0_WS, WAKE2
+	{PA_22, PIN_GPIO | PIN_IRQ | PIN_PWM | PIN_I2C | PIN_I2S | PIN_SPI | PIN_UART, PIN_NONE, 0},
+	// D9: PA23, UART0_TX, SPI0_MOSI, SPI1_MOSI, I2C1_SDA, SD_D1, PWM0, WAKE3
+	{PA_23, PIN_GPIO | PIN_IRQ | PIN_PWM | PIN_I2C | PIN_SPI | PIN_UART,           PIN_NONE, 0},
+	// D10: PA30, UART2_TX, I2C0_SDA, PWM4
+	{PA_30, PIN_GPIO | PIN_IRQ | PIN_PWM | PIN_I2C | PIN_UART,                     PIN_NONE, 0},
+};
+
+PinInfo *lt_arduino_pin_gpio_map[] = {
+	[0]  = &(lt_arduino_pin_info_list[2]),  // PA_0 (D2)
+	[5]  = &(lt_arduino_pin_info_list[5]),  // PA_5 (D5)
+	[12] = &(lt_arduino_pin_info_list[3]),  // PA_12 (D3)
+	[14] = &(lt_arduino_pin_info_list[0]),  // PA_14 (D0)
+	[15] = &(lt_arduino_pin_info_list[1]),  // PA_15 (D1)
+	[18] = &(lt_arduino_pin_info_list[6]),  // PA_18 (D6)
+	[19] = &(lt_arduino_pin_info_list[7]),  // PA_19 (D7)
+	[22] = &(lt_arduino_pin_info_list[8]),  // PA_22 (D8)
+	[23] = &(lt_arduino_pin_info_list[9]),  // PA_23 (D9)
+	[29] = &(lt_arduino_pin_info_list[4]),  // PA_29 (D4)
+	[30] = &(lt_arduino_pin_info_list[10]), // PA_30 (D10)
+};
+// clang-format on
diff --git a/boards/variants/afw121t.h b/boards/variants/afw121t.h
new file mode 100644
index 000000000..2e9c83b04
--- /dev/null
+++ b/boards/variants/afw121t.h
@@ -0,0 +1,136 @@
+/* This file was auto-generated from afw121t.json using boardgen */
+
+#pragma once
+
+// clang-format off
+
+// Pins
+// ----
+#define PINS_COUNT         11 // Total GPIO count
+#define NUM_DIGITAL_PINS   11 // Digital inputs/outputs
+#define NUM_ANALOG_INPUTS  0  // ADC inputs
+#define NUM_ANALOG_OUTPUTS 9  // PWM & DAC outputs
+#define PINS_GPIO_MAX      30 // Last usable GPIO number
+
+// SPI Interfaces
+// --------------
+#define PIN_SPI0_CS    19u // PA_19
+#define PIN_SPI0_MISO  22u // PA_22
+#define PIN_SPI0_MOSI  23u // PA_23
+#define PIN_SPI0_SCK   18u // PA_18
+#define PIN_SPI1_CS    19u // PA_19
+#define PIN_SPI1_MISO  22u // PA_22
+#define PIN_SPI1_MOSI  23u // PA_23
+#define PIN_SPI1_SCK   18u // PA_18
+#define PINS_SPI0_CS   (pin_size_t[]){19u}
+#define PINS_SPI0_MISO (pin_size_t[]){22u}
+#define PINS_SPI0_MOSI (pin_size_t[]){23u}
+#define PINS_SPI0_SCK  (pin_size_t[]){18u}
+#define PINS_SPI1_CS   (pin_size_t[]){19u}
+#define PINS_SPI1_MISO (pin_size_t[]){22u}
+#define PINS_SPI1_MOSI (pin_size_t[]){23u}
+#define PINS_SPI1_SCK  (pin_size_t[]){18u}
+
+// Wire Interfaces
+// ---------------
+#define PIN_WIRE0_SCL_0 22u // PA_22
+#define PIN_WIRE0_SCL_1 29u // PA_29
+#define PIN_WIRE0_SDA_0 19u // PA_19
+#define PIN_WIRE0_SDA_1 30u // PA_30
+#define PIN_WIRE1_SCL   18u // PA_18
+#define PIN_WIRE1_SDA   23u // PA_23
+#define PINS_WIRE0_SCL  (pin_size_t[]){22u, 29u}
+#define PINS_WIRE0_SDA  (pin_size_t[]){19u, 30u}
+#define PINS_WIRE1_SCL  (pin_size_t[]){18u}
+#define PINS_WIRE1_SDA  (pin_size_t[]){23u}
+
+// Serial ports
+// ------------
+#define PIN_SERIAL0_CTS  19u // PA_19
+#define PIN_SERIAL0_RTS  22u // PA_22
+#define PIN_SERIAL0_RX   18u // PA_18
+#define PIN_SERIAL0_TX   23u // PA_23
+#define PIN_SERIAL2_RX   29u // PA_29
+#define PIN_SERIAL2_TX   30u // PA_30
+#define PINS_SERIAL0_CTS (pin_size_t[]){19u}
+#define PINS_SERIAL0_RTS (pin_size_t[]){22u}
+#define PINS_SERIAL0_RX  (pin_size_t[]){18u}
+#define PINS_SERIAL0_TX  (pin_size_t[]){23u}
+#define PINS_SERIAL2_RX  (pin_size_t[]){29u}
+#define PINS_SERIAL2_TX  (pin_size_t[]){30u}
+
+// Pin function macros
+// -------------------
+#define PIN_ADC1  19u // PA_19
+#define PIN_CS0   19u // PA_19
+#define PIN_CS1   19u // PA_19
+#define PIN_CTS0  19u // PA_19
+#define PIN_MISO0 22u // PA_22
+#define PIN_MISO1 22u // PA_22
+#define PIN_MOSI0 23u // PA_23
+#define PIN_MOSI1 23u // PA_23
+#define PIN_PA00  0u  // PA_0
+#define PIN_PA05  5u  // PA_5
+#define PIN_PA12  12u // PA_12
+#define PIN_PA14  14u // PA_14
+#define PIN_PA15  15u // PA_15
+#define PIN_PA18  18u // PA_18
+#define PIN_PA19  19u // PA_19
+#define PIN_PA22  22u // PA_22
+#define PIN_PA23  23u // PA_23
+#define PIN_PA29  29u // PA_29
+#define PIN_PA30  30u // PA_30
+#define PIN_PWM1  15u // PA_15
+#define PIN_PWM2  0u  // PA_0
+#define PIN_PWM3  12u // PA_12
+#define PIN_PWM4  29u // PA_29
+#define PIN_PWM5  22u // PA_22
+#define PIN_RTS0  22u // PA_22
+#define PIN_RX0   18u // PA_18
+#define PIN_RX2   29u // PA_29
+#define PIN_SCK0  18u // PA_18
+#define PIN_SCK1  18u // PA_18
+#define PIN_SCL1  18u // PA_18
+#define PIN_SDA1  23u // PA_23
+#define PIN_TX0   23u // PA_23
+#define PIN_TX2   30u // PA_30
+
+// Port availability
+// -----------------
+#define HAS_SERIAL0             1
+#define HAS_SERIAL2             1
+#define HAS_SPI0                1
+#define HAS_SPI1                1
+#define HAS_WIRE0               1
+#define HAS_WIRE1               1
+#define SERIAL_INTERFACES_COUNT 2
+#define SPI_INTERFACES_COUNT    2
+#define WIRE_INTERFACES_COUNT   2
+
+// Arduino pin names
+// -----------------
+#define PIN_D0  14u // PA_14
+#define PIN_D1  15u // PA_15
+#define PIN_D2  0u  // PA_0
+#define PIN_D3  12u // PA_12
+#define PIN_D4  29u // PA_29
+#define PIN_D5  5u  // PA_5
+#define PIN_D6  18u // PA_18
+#define PIN_D7  19u // PA_19
+#define PIN_D8  22u // PA_22
+#define PIN_D9  23u // PA_23
+#define PIN_D10 30u // PA_30
+
+// Static pin names
+// ----------------
+static const unsigned char D0 = PIN_D0;
+static const unsigned char D1 = PIN_D1;
+static const unsigned char D2 = PIN_D2;
+static const unsigned char D3 = PIN_D3;
+static const unsigned char D4 = PIN_D4;
+static const unsigned char D5 = PIN_D5;
+static const unsigned char D6 = PIN_D6;
+static const unsigned char D7 = PIN_D7;
+static const unsigned char D8 = PIN_D8;
+static const unsigned char D9 = PIN_D9;
+static const unsigned char D10 = PIN_D10;