Problems with NEW Wifi_Kit_32_V3.2

#1

Hello
I´m a happy user of WiFi Kit 32 (V3) (Not Lora Version). (wifi_kit_32_V3.1)
On the last 2-3 years i bought around 200 units for my project.

This week i ordered 8 new units and i received 3 units with the usual (wifi_kit_32_V3.1) PCB and i received 5 units with a new PCB version (wifi_kit_32_V3.2).

On the new PCB the most visible thing is that ESP32-S3 is not anymore soldered at 45º Degrees and there is a new Connector for installation of an external Antenna.

After installing my exiting code on the new (wifikit_32_V3.2 ) i immediately found that OLED screen was not showing nothing.
I tried the code on all remaining 4 units and, all OLED are OFF.

On Heltec website and forums nothing is written about this new version.
Why Heltec didn’t put any info about this new version?
What are the diferences betwen both version?

Heltec, please let all of us know what is happening.

Best regards
Chipemulator

#2

I don’t have a WiFi Kit 32, but I imagine the OLED control is the same as on the WiFi LoRa 32. The really annoying difference between the 3.1 and 3.2 revisions was that the Vext logic was inverted, and Vext needs to be on to run the OLED display. So, on the 3.2 boards, try setting Vext HIGH, rather than LOW to turn Vext ON…

#3

Hello
Thanks for your great tip.
I add
pinMode(Vext, OUTPUT);
digitalWrite(Vext, LOW);

and problem is solved.

I dont understand why Heltec releases this new version and there is no docs on their website