Search found 50 matches

by MCUism
Wed Jun 17, 2020 1:05 pm
Forum: Hardware
Topic: Custom PCB Not working
Replies: 7
Views: 555

Re: Custom PCB Not working

Take a good look at how your CP2104 is connected... if any, REGIN should be connected to Vbus, not 3.3V. You're also missing decoupling capacitors on Vbus. https://www.silabs.com/content/usergenerated/asi/cloud/attachments/siliconlabs/en/community/groups/interface/forum/jcr%3Acontent/content/primar...
by MCUism
Tue Jun 16, 2020 7:02 pm
Forum: Hardware
Topic: Custom PCB Not working
Replies: 7
Views: 555

Re: Custom PCB Not working

mikemoy wrote:
Tue Jun 16, 2020 6:37 pm
Without posting a schematic, its all guesswork.
Hi mikemoy. I have posted the schematic in the first post in the same thread. Please find the attachments with the name
"Rev_1.pdf". I have attached it here also.
by MCUism
Tue Jun 16, 2020 9:03 am
Forum: Hardware
Topic: Custom PCB Not working
Replies: 7
Views: 555

Re: Custom PCB Not working

boarchuz wrote:
Tue Jun 16, 2020 2:15 am
Are D+/D- on the USB receptacle correct?
Yes boarchuz, they are correct. I even tested by interchanging the D+ and D- in the USB cable externally too. Even then it did not recognize the chip. I'm not knowing why it isn't working.
by MCUism
Mon Jun 15, 2020 7:03 pm
Forum: Hardware
Topic: Custom PCB Not working
Replies: 7
Views: 555

Custom PCB Not working

Rev_1.pdf Hi guys, I have made a custom PCB using ESP32-Wroom 32 SoC. I have used a CP2104 USB-UART bridge to program the SoC. But when I connect my board into the computer it is not getting recognized and the says an error like "Device Descriptor request failed" . I had searched a lot regarding th...
by MCUism
Thu May 14, 2020 11:09 am
Forum: Hardware
Topic: Rx,Tx led connections
Replies: 0
Views: 209

Rx,Tx led connections

Hi, I have designed a custom board where ESP32 Wroom SoC is the master. I have used GPIO 16,17 as the UART pins. I wanna include Rx, Tx toggling LED's in order to know whether information is flowing through these lines or not. I have made LED's connections as shown in the following figure 3.PNG But ...
by MCUism
Tue May 12, 2020 11:32 pm
Forum: Hardware
Topic: ESP-WROOM with MPU6050 design
Replies: 2
Views: 284

Re: ESP-WROOM with MPU6050 design

Hello, I have developed a design with an ESP-WROOM-32 and a MPU6050 products and I attached the schematic in the attachment ESP_MAD_RevE.pdf. The design is based on the esp32 adafruit feather schematic, with the introduction of one SPDT switch to power on/off the board and the interface with an MPU...
by MCUism
Tue May 12, 2020 5:30 pm
Forum: Hardware
Topic: Is my Schematic Ok?
Replies: 11
Views: 929

Re: Is my Schematic Ok?

ESP_Sprite wrote:
Tue May 12, 2020 7:58 am
Sorry, not off the top of my head.
No problem. I'll figure them out. Thanks for the support ESP_Sprite your suggestions helped me a lot
by MCUism
Tue May 12, 2020 5:29 pm
Forum: Hardware
Topic: ESP32-NodeMCU pinout not found
Replies: 1
Views: 203

Re: ESP32-NodeMCU pinout not found

I have bought an ESP32-NodeMCU from a store called "SZ Aitexm Store". The store has named it as "NodeMCU", I have searched a lot for a pinout for the NodeMCU, but found nothing. This is the link for the NodeMCU, it is the fourth choice from the left: https://www.aliexpress.com/item/32656775273.html...
by MCUism
Mon May 11, 2020 7:40 pm
Forum: Hardware
Topic: Is my Schematic Ok?
Replies: 11
Views: 929

Re: Is my Schematic Ok?

Because it's more efficient. LDOs piss the difference between 5V and 3.3V away as heat, buck converters won't. I see. Can you suggest any good SMD Buck converter for my application? I know Texas instruments have some...but I really don't know what parameters I should look at while choosing an Buck ...
by MCUism
Sun May 10, 2020 2:16 pm
Forum: Hardware
Topic: Is my Schematic Ok?
Replies: 11
Views: 929

Re: Is my Schematic Ok?

That probably works... I don't know the power use of the ESP8266 off the top of my head, but I think you may be able to power two off an USB connector. Alternatively, you could try using a buck-converter instead of the LDO. Plugging in all the 3 ESPs will probably still overload a 500mA PC USB port...

Go to advanced search