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Heltec Lora32 new revision V3.2 #166

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opened 2026-10-05 05:44:25 +02:00 by adam · 10 comments
adam commented 2026-10-05 05:44:25 +02:00
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Hello dear Ricardo, Aliexpress seller has sent me Heltec board in new revision V3.2 (HTIT-WB32LAF) . I have tried to use the latest V2.2.1 iGate Heltec V3 code through web flasher, but OLED display not working. I am able to connect to AP wifi, but after my ssid/passcode configuration, it is not able to connect to my wifi network (switched back to AP). LoRa module seems working correct, RF packet is sent OK. Any idea what to do, or try ? Thank you ! 73

Hello dear Ricardo, Aliexpress seller has sent me Heltec board in new revision V3.2 (HTIT-WB32LAF) . I have tried to use the latest V2.2.1 iGate Heltec V3 code through web flasher, but OLED display not working. I am able to connect to AP wifi, but after my ssid/passcode configuration, it is not able to connect to my wifi network (switched back to AP). LoRa module seems working correct, RF packet is sent OK. Any idea what to do, or try ? Thank you ! 73 <!-- github-sync-id:2776206155 -->
adam closed this issue 2026-10-05 05:44:25 +02:00
adam commented 2026-10-05 05:44:26 +02:00
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Hi, i will have soon a beta test firmware for this new board as it seems to change a bit and dont work with old version of Heltec V3

Hi, i will have soon a beta test firmware for this new board as it seems to change a bit and dont work with old version of Heltec V3 <!-- github-comment-id:2579087579 -->
adam commented 2026-10-05 05:44:27 +02:00
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with the help of another ham we found out what difference has this board (V3.2) with the regular (now old) V3.

so new adjustment are coming for this board soon (tonight or tomorrow) wait a little

just check if new release is available and then webflasher should reflect this right away

with the help of another ham we found out what difference has this board (V3.2) with the regular (now old) V3. so new adjustment are coming for this board soon (tonight or tomorrow) wait a little just check if new release is available and then webflasher should reflect this right away <!-- github-comment-id:2581161572 -->
adam commented 2026-10-05 05:44:27 +02:00
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hi, can you test the latest branch on github "HELTEC_V3_2" to see if this works for you?

hi, can you test the latest branch on github "HELTEC_V3_2" to see if this works for you? <!-- github-comment-id:2582917532 -->
adam commented 2026-10-05 05:44:28 +02:00
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hi, sorry, I am not experienced enough how to do it - I have successfuly created "Build" from your platformio, but during upload I have obtained this error message: A fatal error occurred: This chip is ESP32-S3 not ESP32. Wrong --chip argument? I see environment: ttgo-lora32-v21 with status: FAILED. But maybe I should change something before, or do something different (?)

hi, sorry, I am not experienced enough how to do it - I have successfuly created "Build" from your platformio, but during upload I have obtained this error message: A fatal error occurred: This chip is ESP32-S3 not ESP32. Wrong --chip argument? I see environment: ttgo-lora32-v21 with status: FAILED. But maybe I should change something before, or do something different (?) <!-- github-comment-id:2583277088 -->
adam commented 2026-10-05 05:44:29 +02:00
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to upload from VSCODE, you need to change the ENVIRONMENT in VSCODE after importing the firmware.

To do this go on the bottom part of the window, where it says "DEFAULT t-lora32-v21" or something like this.... press with the mouse once, a new window will open after a few secs and there you select HELTEC_lora_wifi_V3_2 or something like this

to upload from VSCODE, you need to change the ENVIRONMENT in VSCODE after importing the firmware. To do this go on the bottom part of the window, where it says "DEFAULT t-lora32-v21" or something like this.... press with the mouse once, a new window will open after a few secs and there you select HELTEC_lora_wifi_V3_2 or something like this <!-- github-comment-id:2583282181 -->
adam commented 2026-10-05 05:44:30 +02:00
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ahh, ok, thank you ! Now it seems much better. Display OK, wifi OK, RF OK. Good job Ricardo, thank you !
Obrázok WhatsApp 2025-01-10 o 18 33 38_c0ca0940

ahh, ok, thank you ! Now it seems much better. Display OK, wifi OK, RF OK. Good job Ricardo, thank you ! ![Obrázok WhatsApp 2025-01-10 o 18 33 38_c0ca0940](https://github.com/user-attachments/assets/ddcc0786-133e-4732-9704-69ee555fdbeb) <!-- github-comment-id:2583330663 -->
adam commented 2026-10-05 05:44:30 +02:00
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great news

can you test/confirm that it gets good reading of the battery voltage too?

great news can you test/confirm that it gets good reading of the battery voltage too? <!-- github-comment-id:2583333919 -->
adam commented 2026-10-05 05:44:31 +02:00
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ok, I will connect battery power and compare voltage measurement, but probably tomorrow, during the day...

ok, I will connect battery power and compare voltage measurement, but probably tomorrow, during the day... <!-- github-comment-id:2583342325 -->
adam commented 2026-10-05 05:44:32 +02:00
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ok, I will connect battery power and compare voltage measurement, but probably tomorrow, during the day...

Sorry for delay. My measurement showed 6 mV difference in 4 different voltage points.

> ok, I will connect battery power and compare voltage measurement, but probably tomorrow, during the day... Sorry for delay. My measurement showed 6 mV difference in 4 different voltage points. <!-- github-comment-id:2585895029 -->
adam commented 2026-10-05 05:44:32 +02:00
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6mV is good enough for me

6mV is good enough for me <!-- github-comment-id:2585899129 -->
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Reference: adam/LoRa_APRS_iGate#166