Heltec Vision Master T190 (ESP32-S3 + SX1262), 902-928 MHz — Meshtastic Firmware
Heltec Vision Master T190 (ESP32-S3 + SX1262), 902-928 MHz — Meshtastic Firmware
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Description ▼
Note: This is the Heltec Vision Master T190 (HT-VMT190) with LoRa enabled, 902–928 MHz band, and Meshtastic firmware preloaded. ESP32-S3 development board with onboard 1.9″ TFT display and SX1262 LoRa.
A compact ESP32-S3 + LoRa node with a bright 1.9-inch color TFT (170×320, up to 262K colors). Use it as a Meshtastic display node, or develop with Heltec’s ESP32 tools over Wi-Fi, Bluetooth, and LoRa. This listing is specifically the with-LoRa / 902–928 MHz / Meshtastic configuration.
KEY FEATURES
- ESP32-S3R8 MCU with Wi-Fi (802.11 b/g/n) and Bluetooth LE 5 / mesh.
- SX1262 LoRa node chip — this variant: 902–928 MHz.
- Ships with Meshtastic firmware preloaded.
- Onboard 1.9″ TFT-LCD display (170×320 RGB, up to 262K colors) with protective transparent support between PCB and panel.
- Type-C USB; SH1.25-2P lithium battery interface with charge/discharge management, overcharge protection, battery sensing, and USB/battery auto-switch.
- LoRa and Wi-Fi antenna connectors (IPEX 1.0); SH1.0-4P sensor interface; dual 2.54 mm header footprints.
- Max TX power 21±1 dBm; max receive sensitivity −136 dBm @ SF12, BW 125 kHz.
SPECIFICATIONS
| Category | Details |
| Product Name | Vision Master T190 (HT-VMT190) — LoRa 902–928 MHz, Meshtastic |
| Master Chip | ESP32-S3R8 |
| LoRa Chip | SX1262 |
| Frequency (this listing) | 902–928 MHz |
| Firmware (this listing) | Meshtastic (preloaded) |
| Max. TX Power | 21±1 dBm |
| Max. Receiving Sensitivity | −136 dBm @ SF12, BW = 125 kHz |
| Wi-Fi | 802.11 b/g/n, up to 150 Mbps |
| Bluetooth | Bluetooth LE: Bluetooth 5, Bluetooth mesh |
| Memory | 384 KB ROM; 512 KB SRAM; 16 KB RTC SRAM; 8 MB PSRAM; 16 MB SiP Flash |
| Display | 1.9″ TFT-LCD, 170×320 RGB, up to 262K colors |
| Interfaces | Type-C USB; 2× SH1.25 lithium battery interface; LoRa ANT (IPEX 1.0); Wi-Fi ANT (IPEX 1.0); 2× 2.54 mm header rows; SH1.0-4P sensor interface |
| Hardware Resources | 7× ADC1, 6× ADC2, 11× Touch, 3× UART, 2× I2C, 2× SPI, etc. |
| Battery | 3.3–4.2 V lithium battery supply and charge (battery not included) |
| Operating Temperature | −20 ~ 70 ℃ |
| Dimensions | 60 × 25.4 × 10.19 mm |
| Product Weight | 35 g |
WHAT'S INCLUDED
- 1 × HT-VMT190 (Vision Master T190 board with LoRa, 902–928 MHz, Meshtastic firmware)
- 1 × LoRa antenna
- 1 × SH1.25-2P battery connector
- 1 × Sensor connection wire
- 2 × 2.54 × 13 header pin strips
Not included: lithium battery.
NOTES
- This listing is the with LoRa / 902–928 MHz / Meshtastic variant only. Other bands or firmware options are separate listings.
- For best results, keep Meshtastic firmware updated after first boot.
- Onboard 2.4 GHz uses the PCB/spring antenna by default; an IPEX footprint is available if you fit an external antenna per Heltec’s guidance.
- Docs: product page.
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SKU:U0833
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