Search found 46 matches

by MCUism
Sat May 02, 2020 5:33 pm
Forum: Hardware
Topic: Do we need any Balun filter for RF designs?
Replies: 2
Views: 438

Re: Do we need any Balun filter for RF designs?

Hi ESp_Sprite. Thanks for the reply. I already referred to that document. But as the antenna that I am gonna use is a different one the matching circuits are completely inappropriate. That's the reason why I have posted my question here.
by MCUism
Sat May 02, 2020 9:56 am
Forum: Hardware
Topic: Do we need any Balun filter for RF designs?
Replies: 2
Views: 438

Do we need any Balun filter for RF designs?

Hi , I have been working on a RF design with ESP32-PICO-D4. In the datasheet it is mentioned that Wifi Radio output impedance is 50 ohms. I'm going to use this board for a BLE application. 1. There is no details about output impedance for Bluetooth section(is it same as Wifi Radio output impedance)?...
by MCUism
Wed Mar 18, 2020 7:06 pm
Forum: General Discussion
Topic: Regarding ESPNOW
Replies: 3
Views: 1475

Re: Regarding ESPNOW

Yes, it's possible. Without knowing what the arrows are (e.g. is the connection between mobile and ESP32 BLE or WiFi? What data are you trying to send?) it's impossible to do anything but point you at the api documentation . Hi ESP_Sprite. I forgot to mention the connection between the mobile and t...
by MCUism
Wed Mar 18, 2020 5:45 am
Forum: General Discussion
Topic: Regarding ESPNOW
Replies: 3
Views: 1475

Regarding ESPNOW

Hello, I've been trying my hand around ESPNOW. I want to implement an architecture something like below https://user-images.githubusercontent.com/26191169/73637368-2186bc80-468e-11ea-9bdb-8e07b77c5be9.png Is it possible to implement such kind of connection with ESPNOW? If yes, I wanna get some resou...
by MCUism
Thu Jan 30, 2020 10:30 am
Forum: General Discussion
Topic: Need Review of custom PCB design
Replies: 8
Views: 1534

Re: Need Review of custom PCB design

Hey Aeronatuic,

Where exactly did I miss the capacitors?? You meant bypass caps?
by MCUism
Thu Jan 16, 2020 3:26 pm
Forum: General Discussion
Topic: Need Review of custom PCB design
Replies: 8
Views: 1534

Re: Need Review of custom PCB design

This board looks ok in generał, but as mentioned before, you could have some catastrophic bugs (no essential caps close to uc, no antenna matching and its feeder impedance control, inaccurate width of power traces) in a general schematic and should post it too. The most essential are small (0603 or...
by MCUism
Fri Jan 10, 2020 3:25 pm
Forum: General Discussion
Topic: Need Review of custom PCB design
Replies: 8
Views: 1534

Re: Need Review of custom PCB design

boarchuz wrote:
Fri Jan 10, 2020 3:23 pm
I'd suggest having another go at those power traces. Consider width, and more optimal routing.

Do you need that bottom-layer trace on 3V3 TP?

Check the vias for the exposed pad. Are they GND?
Yes boarchuz, I have those exposed via's grounded connecting the top and bottom layers.
by MCUism
Fri Jan 10, 2020 3:17 pm
Forum: General Discussion
Topic: Need Review of custom PCB design
Replies: 8
Views: 1534

Re: Need Review of custom PCB design

@mikemoy Thanks for the reply. I need a clarification here. 1. According to the datasheet of ESP32 PICO D4 it has an integrated impedance matching circuitry and it has matched with the impedance of the antenna i.e., 50 ohms. So, I thought there will be no need for the impedance matching circuitry. h...
by MCUism
Fri Jan 10, 2020 8:39 am
Forum: General Discussion
Topic: Need Review of custom PCB design
Replies: 8
Views: 1534

Need Review of custom PCB design

Here is my design. As this is my first design with ESP32 PICOD4 & RF I would like to get suggestions before sending this board off to fabrications. Any suggestions are highly appreciated. Thanks in advance.!
Image.
by MCUism
Wed Jan 08, 2020 3:42 pm
Forum: General Discussion
Topic: ESP32 PICOD4 PCB design
Replies: 4
Views: 669

Re: ESP32 PICOD4 PCB design

Thanks for the info. I have modified my design now. I have a doubt regarding routing my PCB. Do I have to take any special care while routing my antenna? I have attached my routed pcb below. (Note: Ground plane routing is pending yet.)

https://photos.app.goo.gl/MP9g43WQEEoMVbT18