Search found 13 matches

by pmi2410
Thu Dec 25, 2025 5:07 am
Forum: Hardware
Topic: Need Help With 5V for ESP32S3 from Both Battery/Buck Converter and USB port for Programing
Replies: 0
Views: 1230

Need Help With 5V for ESP32S3 from Both Battery/Buck Converter and USB port for Programing

I have a 3S LiIon battery pack, so ~12V, connected to an MPM3610 buck converter to produce 5V for an ESP32S3 DevKit C-1. I need to also have a USB cable (with 5V) attached to the ESP32S3 for programming. Is this circuit adequate for having the 5V from the battery connected to the ESP32S3 AND the USB ...
by pmi2410
Wed Nov 19, 2025 10:17 pm
Forum: Hardware
Topic: Can I use GPIO 12 and 13 for I2C bus?
Replies: 2
Views: 2777

Re: Can I use GPIO 12 and 13 for I2C bus?

Thanks!
by pmi2410
Wed Nov 19, 2025 5:58 pm
Forum: Hardware
Topic: Can I use GPIO 12 and 13 for I2C bus?
Replies: 2
Views: 2777

Can I use GPIO 12 and 13 for I2C bus?

I am a bit confused by the documentation for the ESP32S3 N8R16 devkit boards. These boards have 2 USB-C connectors on the side away from the processor and the reset/boot buttons up near the processor. I think they are devkitc-1.1 boards. I am attaching them to a 4 layer PCB, so it would be very hard ...
by pmi2410
Sun Nov 16, 2025 7:53 pm
Forum: Hardware
Topic: How to layout a custom PCB with an ESP32S3 and integrated antenna?
Replies: 1
Views: 3096

How to layout a custom PCB with an ESP32S3 and integrated antenna?

I am interested in the group's recommendations and experiences with PCB layout and integrated antennas.

I am using an ESP32S3 DevKitC-1 in a socket for prototyping and then will convert to a smaller version later. I have a 4 layer PCB - L1=signals, L2=ground, L3=power, and L4=signals.

I can ...
by pmi2410
Tue Feb 25, 2025 10:53 pm
Forum: Hardware
Topic: Need Help Debugging an ESP-NOW Project
Replies: 1
Views: 1453

Re: Need Help Debugging an ESP-NOW Project

The issue turned out to be misreading the ezButton documentation. I used the pin # in the button definition, but ezButton wants the GPIO number. Progress!
by pmi2410
Tue Feb 25, 2025 10:08 pm
Forum: Hardware
Topic: Need Help Debugging an ESP-NOW Project
Replies: 1
Views: 1453

Need Help Debugging an ESP-NOW Project

I am following this tutorial - https://randomnerdtutorials.com/esp-now-two-way-communication-esp32/ . I have 2 ESP32 S3 DevKitC boards and some associated hardware to read switches using ezButton and turn on some LEDs. Board A, the Launcher, starts up just find but can't communicate with Board B ...
by pmi2410
Wed Nov 27, 2024 5:51 pm
Forum: Hardware
Topic: Which board do I have?
Replies: 2
Views: 1406

Which board do I have?

I ordered from Amazon the ESP32 S3 Development Board ESP32-S3-DevKitC-1-N8R8 https://www.amazon.com/dp/B0D93FLZLH?ref=ppx_yo2ov_dt_b_fed_asin_title , and it looks like this (note the placement of the reset and en buttons):
https://m.media-amazon.com/images/I/71pgSIHMG8L._AC_SL1500_.jpg

When I ...
by pmi2410
Sat Nov 23, 2024 7:09 pm
Forum: Hardware
Topic: New to ESP32 Programming - Getting Weird ADC Readings and Can Only Run Code Once
Replies: 1
Views: 1261

Re: New to ESP32 Programming - Getting Weird ADC Readings and Can Only Run Code Once

I was able to fix the weird ADC readings with
adc.atten(ADC.ATTN_11DB) # Set to 3.3V range
adc.width(ADC.WIDTH_12BIT) # 12-bit resolution (0-4095, default)
and I get this output now:
DAC voltage: 0.25 ADC voltage: 0.18
DAC voltage: 0.5 ADC voltage: 0.41
DAC voltage: 0.75 ADC voltage: 0.63
DAC ...
by pmi2410
Sat Nov 23, 2024 5:29 am
Forum: Hardware
Topic: Is there an ESP32xxx chip I can use for my project?
Replies: 3
Views: 1694

Re: Is there an ESP32xxx chip I can use for my project?

What ESP32 should I look at for the following specs:
ESP-NOW support
ADC
DAC
GPIO
WiFi
Bluetooth optional

What dev kit should I consider?
by pmi2410
Fri Nov 22, 2024 11:21 pm
Forum: Hardware
Topic: Can I use micropython to develop ESP-Now project?
Replies: 1
Views: 1293

Can I use micropython to develop ESP-Now project?

Do I have to use C/C++ for an ESP-NOW project, or will micropython work? There are no real timing constraints for the project. All the interactions occur in what I call "human time".

Go to advanced search