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Heltec Automation

CubeCell Dev-Board Plus (HTCC-AB02)

Heltec CubeCell HTCC-AB02 is an ultra-low-power LoRa/LoRaWAN development board based on the ASR6502 SoC (ARM Cortex-M0+ with integrated SX1262), featuring a 0.96" OLED display, solar panel input, and lithium battery management. Ideal for long-range IoT sensor nodes and agricultural monitoring.

Starting from

$15.50

Accessories

Specifications

ArchitectureARM Cortex-M0+
CPU Cores1
Clock Speed48MHz
Flash128KB
GPIO Level3.3V
StorageNo
Dimensions51.9 × 25 × 8mm
Weight30g

Certifications

Components

48MHz ARM Cortex-M0+ MCU (PSoC 4000 series) with integrated SX1262 LoRa transceiver, 128KB flash, 16KB SRAM, 8-channel DMA, and ultra-low-power design with 3.5uA deep sleep.

Semtech SX1262 long-range, low-power sub-GHz RF transceiver supporting LoRa and (G)FSK modulation, 150-960MHz ISM bands, +22dBm TX power, -135dBm receive sensitivity.

Solomon Systech SSD1306 OLED driver IC controlling the built-in 0.96-inch 128x64 monochrome OLED display, connected via I2C (SDA0/SCL0). Used for debugging info, battery status, and sensor readout.

Silicon Labs CP2102 single-chip USB-to-UART bridge providing serial programming and debug interface via Micro-USB connector. Royalty-free VCP drivers available for Windows, Mac, and Linux.

Integrated lithium battery management system with charge/discharge control, overcharge protection, battery voltage detection (VBAT_ADC), and automatic USB/battery/solar power switching. Supports 5.5-7V solar panel input.

Bus Interfaces

I2C— I2C0
SCL: GPIO (Pin 39 / SCL0)SDA: GPIO (Pin 40 / SDA0)
I2C— I2C1
SCL: GPIO8 (Pin 36 / SCL1)SDA: GPIO9 (Pin 37 / SDA1)
SPI— SPI0
CLK: Pin 27 / CLK0NSS: Pin 28 / NSS0MISO: Pin 26 / MISO0MOSI: Pin 25 / MOSI0
SPI— SPI1
CLK: GPIO3 (Pin 10 / CLK1)NSS: Any GPIOMISO: GPIO2 (Pin 9 / MISO1)MOSI: GPIO1 (Pin 8 / MOSI1)
UART— UART1
RX: Pin 17 / RX1TX: Pin 18 / TX1
UART— UART2
RX: Pin 29 / RX2TX: Pin 30 / TX2
SWD
SWCLK: SWD clockSWDIO: SWD data
LoRa
CLK: Pin 27NSS: Pin 28MISO: Pin 26MOSI: Pin 25

GPIO Map

GPIO1
MOSI1 — SPI1 Master Out
digital-inputdigital-output
SPI
GPIO2
MISO1 — SPI1 Master In
digital-inputdigital-output
SPI
GPIO3
CLK1 / PWM1 — SPI1 Clock / PWM Output
digital-inputdigital-outputpwm
SPI
GPIO4
PWM2 — PWM Output
digital-inputdigital-outputpwm
PWM
GPIO5
General Purpose I/O
digital-inputdigital-output
GPIO6
General Purpose I/O
digital-inputdigital-output
GPIO7
General Purpose I/O
digital-inputdigital-output
GPIO8
SCL1 — I2C1 Clock
digital-inputdigital-output
I2C
GPIO9
SDA1 — I2C1 Data
digital-inputdigital-output
I2C
GPIO10
OLED Reset
digital-inputdigital-output
GPIO11
General Purpose I/O
digital-inputdigital-output
GPIO12
General Purpose I/O
digital-inputdigital-output
GPIO13
RGB LED Output
digital-inputdigital-output
GPIO14
General Purpose I/O
digital-inputdigital-output
GPIO15
Vext Control — External 3.3V Power Switch
digital-output
GPIO16
VBAT_ADC Control / USER Button
digital-inputdigital-output
ADC1
12-bit Analog Input / Power Detection
adcdigital-input
ADC
ADC2
12-bit Analog Input
adcdigital-input
ADC
ADC3
12-bit Analog Input
adcdigital-input
ADC

Overview

The Heltec CubeCell Dev-Board Plus (HTCC-AB02) is a compact LoRa/LoRaWAN development board built around the ASR6502 system-on-chip, which integrates an ARM Cortex-M0+ processor running at 48MHz with a Semtech SX1262 LoRa transceiver on a single die. This tight integration yields exceptional power efficiency, with deep sleep current as low as 3.5 microamps — making it one of the most power-efficient LoRa development boards available.

The board ships with a 0.96-inch OLED display (SSD1306, 128x64 pixels) for on-device debugging and status readout, and includes a built-in lithium battery management system with charge/discharge control, overcharge protection, and automatic USB/battery power switching. A dedicated solar panel input (5.5-7V) enables fully autonomous deployments in remote locations without access to mains power.

With 16 GPIO pins, three 12-bit ADC channels, dual UART/SPI/I2C interfaces, and full Arduino compatibility via the CubeCell-Arduino framework, the HTCC-AB02 serves as a versatile platform for building LoRaWAN sensor nodes, agricultural monitors, environmental data loggers, and other long-range IoT applications. The board supports LoRaWAN 1.0.2 protocol and operates across 433/868/915MHz frequency bands, covering global LoRaWAN deployments on networks like The Things Network and Helium.

Community projects demonstrate real-world use cases including solar-powered compost heap temperature monitoring, soil moisture sensing for smart irrigation, and LoRa APRS tracking — all leveraging the board's ultra-low power consumption and long-range communication capabilities.

Use Cases

8

Resources

Where to Buy

Explore more of the directory — popular use cases, firmware, and specs to browse next.