An experimental build of the Cairn companion for the Heltec WiFi LoRa 32 V4 with its OLED (the plain V4, ESP32-S3R2 with 2 MB PSRAM; not the V4-R8). Requested in #53.
Not tested on a plain V4 yet. It is the same code as the V4-R8 OLED companion in the release (which has run on a V4-R8), built for the plain V4's pins and memory. If you try it, please report in #53 what works and what doesn't. This is a pre-release: devices never offer it as an update, and it may change or go away.
What it has (as the V4-R8 OLED companion in Cairn 134):
- The T096's one-button interface (click, hold and double-click on the PRG button) on the 128x64 OLED.
- The phone app over Bluetooth (PIN 123456 until you change it) and over Wi-Fi at the same time (TCP port 5000). Wi-Fi stays off until you set a network: Menu › Wi-Fi, Menu › Settings › Wi-Fi setup (from your phone's browser), or the app's CLI (
set wifi.ssid/set wifi.pwd). - GPS, the band scope and noise floor, and MeshCore 1.18.0 underneath.
Install
MeshCore-HeltecV4-Cairn134-2026-11-14-ble-full.bin goes at 0x0 after Erase Flash (a web flasher, or esptool.py write_flash 0x0 <file>). It erases everything, so back up your node's private key from the app first if you want to keep your identity. There is no -update.bin for an experimental build.
Not for the V4-R8 (use MeshCore-HeltecV4R8-…-ble-full.bin from the release) or the touch kits. The MeshCore-HeltecV4-…-repeater files in the release are the repeater, not this companion.
SHA256SUMS.txt covers the file: shasum -a 256 -c SHA256SUMS.txt.