ZLX-ESP32-2 ESP32-C5 Development Board with Enclosure ? 2.8" Resistive Touch LCD, Wi-Fi 6 Dual-Band, BLE, Zigbee/Thread, GPS Option

Model: ZLX-ESP32-2  |  Core Module: ESP32-C5-WROOM-1U-N8R8

About This Item

• ESP32-C5 32-bit RISC-V single-core processor, up to 240 MHz
• ESP32-C5-WROOM-1U-N8R8 module: 8 MB Flash + 8 MB PSRAM onboard module memory ? not a microSD/TF card
• 2.4 GHz + 5 GHz dual-band Wi-Fi 6 (802.11ax), up to 150 Mbps
• Bluetooth LE, IEEE 802.15.4, Zigbee 3.0, Thread 1.4
• 2.8-inch 240×320 LCD, ST7789 driver, BGR initialization, inversion OFF
• XPT2046 4-wire resistive touchscreen, independent software SPI
• microSD/TF card slot ? card not included
• GPS interface: single-antenna version has no GPS; dual-antenna version supports GPS
• Audio output: 2.0 mm 2-pin speaker/audio connector, PWM audio + amplifier enable
• Battery voltage sensing, green LED, BOOT/RESET buttons
• IPEX1 external antenna connector ? external 2.4/5 GHz 50 ? antenna required for radio use
• Enclosure colors available: military green, orange, white
• Ideal for IoT, HMI, data logging, embedded development, makers, education, and prototyping

Specifications

Item	Specification
Board Model	ZLX-ESP32-2
Core Module	ESP32-C5-WROOM-1U-N8R8
Board Size	Approx. 86 × 50 mm
Enclosure Size	Approx. 91 × 66 × 30 mm (antenna excluded)
Display	2.8-inch TFT LCD, ST7789, 240×320 native resolution; landscape logical 320×240
Color Order / Inversion	BGR; display inversion OFF / normal mode
Touch	XPT2046 resistive touch; independent software SPI; test flow marked no calibration
microSD/TF Slot	SPI mode; shares SPI with LCD; card NOT included
GPS Interface	1.25 mm 4-pin; UART on GPIO0/GPS TX input and GPIO9/GPS RX output; dual-antenna version only
Audio	2.0 mm 2-pin speaker/audio connector; GPIO8 PWM audio, GPIO24 amplifier enable
Battery Interface	1.25 mm 2-pin, 3.7 V 1S; protected 1000?3000 mAh recommended; left +, right ? in labeled orientation
Battery Sensing	GPIO1 via 100 k? / 100 k? divider; approx. 2× ADC voltage; voltage estimate only, not a fuel gauge
External Antenna	IPEX1 connector; suitable 2.4/5 GHz, 50 ? antenna required for radio use
Buttons / LED	RESET, BOOT; green LED on GPIO26, HIGH = ON, LOW = OFF

Module Specifications

Item	Specification
Embedded SoC	ESP32-C5HR8
CPU	32-bit RISC-V single core, up to 240 MHz
Memory	320 KB ROM, 384 KB HP SRAM, 16 KB LP SRAM, 8 MB Quad SPI Flash, 8 MB Quad SPI PSRAM
Wi-Fi	1T1R, 2.4 GHz + 5 GHz dual-band; IEEE 802.11ax/ac/b/g/n; up to 150 Mbps
Bluetooth	Bluetooth LE
IEEE 802.15.4 / Zigbee / Thread	2.4 GHz OQPSK, 250 Kbps; Zigbee 3.0 / Thread 1.4
Module Supply	3.0?3.6 V, typical 3.3 V; external supply should provide at least 0.6 A
Ambient Temperature	?40 to +85 °C
Module Size	18.0 × 21.2 × 3.3 mm
RF System	50 ?; external antenna via IPEX1 connector

GPIO Mapping

Board peripherals use 19 GPIOs; TX0 = GPIO11 and RX0 = GPIO12 are additionally used by UART0. GPIO15 is reserved by PSRAM on N8R8. EN is not a GPIO.

GPIO	Signal	Direction	Function	Notes
0	GPSTX	Input	GPS UART TX	GPS module TX ? ESP32-C5
1	BAT_ADC	Input / ADC	Battery voltage sensing	100 k? / 100 k? divider; ADC × 2 ? battery voltage
2	SD_MISO	Input	TF DAT0 / LCD MISO shared	Shared SPI MISO
3	RTP_DOUT	Input	XPT2046 DOUT	Touch controller data output
4	RTP_SCK	Output	XPT2046 SCK	Independent software SPI
5	RTP_DIN	Output	XPT2046 DIN	Independent software SPI
6	LCD_SCK	Output	LCD SCK / TF SCK shared	Shared SPI clock
7	LCD_MOSI	Output	LCD MOSI / TF CMD (MOSI) shared	Shared SPI MOSI
8	AUDIOPWM	Output	Audio PWM	Audio output control
9	GPSRX	Output	GPS UART RX	ESP32-C5 TX ? GPS module RX
10	LCDCS	Output	ST7789 CS	LCD chip select
13	LCDBL	Output	LCD backlight	Backlight control
14	LCD_RS/DC	Output	ST7789 DC	Data / command select
23	RTPCS	Output	XPT2046 CS	Touch chip select
24	AMP_EN	Output	Amplifier enable	High-level enable; verify actual hardware revision
25	RTPIRQ	Input	XPT2046 IRQ	Touch interrupt
26	GREENLED	Output	Green LED	HIGH = ON, LOW = OFF
27	SDCS	Output	TF DAT3 / CS	TF card SPI chip select
28	BOOT	Input / Control	AUTOBOOT / auto-start control	Factory restore; BOOT input / factory-restore logic

System & UART Signals

Signal	Purpose	Notes
RESET_AUTO / EN	ESP32 reset / enable	System enable / reset; not a GPIO
UART0_TX / TX0 / GPIO11	UART0 transmit	Used; excluded from 19 peripheral GPIO count
UART0_RX / RX0 / GPIO12	UART0 receive	Used; excluded from 19 peripheral GPIO count

Variant & Package Notes

• Single-antenna version: does not include GPS function.
• Dual-antenna version: GPS-supported version.
• microSD/TF card is NOT included.
• External antenna required for wireless use. Please check the selected variant/package for antenna and GPS configuration.
• Available enclosure colors: military green, orange, white.
• Package contents: 1 × ZLX-ESP32-2 enclosed development board in selected color/variant.

Important Notes

• LCD and TF card share SPI (SCK / MOSI / MISO) but use separate CS pins: LCD_CS GPIO10 and SD_CS GPIO27.
• Assert only the target device CS at a time to avoid bus contention.
• XPT2046 touch uses independent software SPI and does not share the main LCD/TF SCK / MOSI signals.
• Verify battery polarity before connection. Reverse polarity may damage the board.
• Use a protected single-cell 3.7 V Li-ion/LiPo battery, 1000?3000 mAh recommended.
• Battery voltage reading is an estimate only and is not a coulomb counter / fuel gauge.
• Do not apply logic levels above 3.3 V to IO pins unless explicitly verified.
• 5 GHz Wi-Fi channels and transmit power depend on local regulations.
• When mating/unmating the IPEX connector, apply force vertically and avoid sideways prying.
• Use ESD precautions with the bare board and prevent metal objects from causing shorts.

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