ESP32-PICO-D4 circuit question

Kamool
Posts: 4
Joined: Sun May 20, 2018 10:46 am

ESP32-PICO-D4 circuit question

Postby Kamool » Wed Oct 31, 2018 3:34 pm

Hello,

I'd like to use ESP32-PICO-D4 in my motorcycle data-logger module.

First of all - do i need anything more that things in "peripheral schematics" in datasheet to run module?

Secondly - 5 meters of wifi range is more than enough for me, then do i need to make matching circuit (L5, C27, C28) for wifi antena? Or can I just connect antena directly to PICO's pin and ground? What is cheap and popular antena i can get?

Do i need capacitors between SENSOR VP and CP, CN and VN?

Regards

ESP_Lvxinyue
Posts: 33
Joined: Fri Dec 25, 2015 6:13 am

Re: ESP32-PICO-D4 circuit question

Postby ESP_Lvxinyue » Tue Dec 11, 2018 3:11 am

Kamool wrote:
Wed Oct 31, 2018 3:34 pm
Hello,

I'd like to use ESP32-PICO-D4 in my motorcycle data-logger module.

First of all - do i need anything more that things in "peripheral schematics" in datasheet to run module?

Secondly - 5 meters of wifi range is more than enough for me, then do i need to make matching circuit (L5, C27, C28) for wifi antena? Or can I just connect antena directly to PICO's pin and ground? What is cheap and popular antena i can get?

Do i need capacitors between SENSOR VP and CP, CN and VN?

Regards
Hello,

1. To simply run the module, "peripheral schematics" is enough.
2. You can solder a 0R resistor in L5, leave C27 and C28 unsoldered and see if RF performance is acceptable.
3. You can use the PCB antenna same as the one in our reference design: https://www.espressif.com/sites/default ... n_V1.0.zip
4. No, you don't need to add caps between SVP and SCP, SVN and SCN, unless you want to use the LNA ADC.

Thanks.

User avatar
loboris
Posts: 514
Joined: Wed Dec 21, 2016 7:40 pm

Re: ESP32-PICO-D4 circuit question

Postby loboris » Tue Dec 11, 2018 8:23 am

ESP_Lvxinyue wrote:
Tue Dec 11, 2018 3:11 am
4. No, you don't need to add caps between SVP and SCP, SVN and SCN, unless you want to use the LNA ADC.
Which is not supported. Or, is it?

ESP_Lvxinyue
Posts: 33
Joined: Fri Dec 25, 2015 6:13 am

Re: ESP32-PICO-D4 circuit question

Postby ESP_Lvxinyue » Fri Dec 14, 2018 2:57 am

loboris wrote:
Tue Dec 11, 2018 8:23 am
ESP_Lvxinyue wrote:
Tue Dec 11, 2018 3:11 am
4. No, you don't need to add caps between SVP and SCP, SVN and SCN, unless you want to use the LNA ADC.
Which is not supported. Or, is it?
No, it's not supported. Thanks for the reminder :)

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