Description Characteristics
3
Reviews
Note
：
Firmware for Version
4
.
3
Hardware version
4
.
3
requires new
fi
rmware.
Schematic of V
4
.
3
If you are using
Heltec
’
s development framework
, please update the board package
and LoRa library to the latest via GitHub.
Meshtastic
, please use
fi
rmware version
2
.
7
.
20
or above.
MeshCore
, please use
fi
rmware version
1
.
15
.
0
or above.
The
WiFi LoRa
32
V
4
, the next gen to the Heltec V
3
, is a powerful, high-e
ffi
ciency IoT maker
board featuring an
ESP
32
S
3
MCU
and
SX
1262
LoRa Node chip
; retaining the V
3’
s size an
Summary
d
Devices Open Source Hardware ESP32 Series LoRa32 Series
WiFi LoRa 32 V4 Product Overview
WiFi_LoRa_32_V4
The classic WiFi LoRa 32 development board has been upgraded to the all-new V4 version. While
retaining the advantages of previous editions, it features comprehensive improvements in
craftsmanship and enhanced performance.
Product characteristics
Based on ESP32-S3R2 + SX1262, supporting Wi-Fi b/g/n, BLE, and LoRa.
Equipped with 2MB PSRAM and 16MB external Flash for UI and complex applications.
Available in high-power (28 dBm) and low-power (22 dBm) versions.
Added SH1.25-2Pin solar panel and SH1.25-8Pin GNSS interfaces.
PC casing with integrated antenna, optimized battery management, and ultra low power
consumption (
<20 μA
).
Hardware Version Comparison
Parameters V3 V4
MCU ESP32-S3FN8 ESP32-S3R2
Flash 8MB (integrated) 16MB (external)
USB to Serial Chip CP2102 Removed CP2102
Power Management Standard Li-ion management IC Upgraded IC supporting solar input
Solar Input Not available Added SH1.25-2P interface
LoRa TX Power 21±1 dBm 28±1 dBm
2.4G Antenna Metal spring antenna FPC antenna + IPEX connector
GPS Interface Not available Added SH1.25-8Pin interface
Peripheral I/F 36-pin 40-pin
Screen Connection Soldered Soldered + B2B connector
Pin Craft Silver-plated Gold-plated
Screen Bracket Partial protection Full protection
Important Resources
Datasheet
Schematic diagram
Pin Map
