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Heltec-Aaron-Lee / WiFi_Kit_series

Arduino source codes and toolchain for WiFi_Kit_series made by HelTecAutomation.
GNU Lesser General Public License v2.1
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Can you post the esp32 Lora v2 schematic #63

Closed kampto closed 5 years ago

kampto commented 6 years ago

Can you post the esp32 Lora v2 schematic? GitHub still only has V1 schematic. Its difficult to see how the Pin 13 battery voltage divider works since there no documentation. And Pins 34 and 35 seem to operate differently than V1. V1 boards I had some Analog iinputs on 34 and 35 and they dont work anymore on V2.

moloned commented 6 years ago

Any progress on posting the schematics

kampto commented 6 years ago

V2 schematic is posted now. Appears pin 13 is tied to a battery V-divider and enables Vext by using Pin 21. But confused about why Vext is tied to the RF chip and what DIO1 and DIO2 (formerly GPIO's 34, 35 on V1) do.

skeezoo commented 5 years ago

hello @kampto can you give link for V2 schematics Thanks

rodri16 commented 5 years ago

https://github.com/Heltec-Aaron-Lee/WiFi_Kit_series/blob/master/SchematicDiagram/WiFi_LoRa_32(V2)

rodri16 commented 5 years ago

So with Pin 21 you control Vext and detect battery level BUT Pin 21 is SDA for I2C, so If I use I2C I cannot use Pin 21 for controlling Vext and detect battery??

Heltec-Aaron-Lee commented 5 years ago

@rodri16 yes. but I2C pin can be MUX to any GPIO