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The DevHeads IoT Integration Server accelerates technology engineering by helping pro devs learn, share and collaborate.

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DevHeads IoT Integration Server

The DevHeads IoT Integration Server accelerates technology engineering by helping pro devs learn, share and collaborate.

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GrimReaper0304

3/17/2024

Looking for a device based on ESP32, that can do Chat, File transfer, Voice and Video cal

Hi guys, i was looking for a device based on ESP32, that can do Chat, File transfer, Voice and Video call between ESP to ESP only. Is it feasible or do i have to look at other MCUs?

Solution:

I think raspberry will be a great choice

Chimmuanya Okere

3/15/2024

Choosing the right voltage regulator

Currently working on the power section of my schematics design. Am using a voltage regulator of 3.3v 500mA. The total power(current) of the board at full load (when operating at full capacity) is 470mA, and the regulator has a drop out or leakage current of about 50mA. Will it still be ok for me to use this regulator or I should change to another. But the device will not always operate at full capacity, just once in a while. Will it cause any issue on the board. @PCB & Analog @MCU, MPU & Firmware...

Solution:

For butter results and the regulator won't heat up you have to add at least 25-30% that means you're consuming 450mA you should use 563mA - 585mA more is better , also it is recommended to use a heat sync with some thermal paste on it, because the heat effects regulator by time

gKarthikSai

3/14/2024

I wanted to advance my skills in VERILOG language and FPGA's, any roadmap?

Hey all.....i wanted to advance my skills in VERILOG language and FPGA's, any roadmap that you can provide me on where to start and how to proceed will be really helpful.

Solution:

See if this playlist helps: https://www.youtube.com/playlist?list=PLDqMkB5cbBA4OW0fDTu1FY6aw4uBWOpBa

youcef_ali

3/14/2024

looking for a better/fast way to dump the memory in Zynq Soc CLI or script without GUI

Hi, I'm looking for a better/fast way to dump the memory in Zynq Soc CLI or script without GUI

Solution:

https://www.xilinx.com/video/hardware/how-to-develop-and-debug-using-xsct.html chekc command line interface to run SDK commands section. I haven't tried this - let me know and I'll try myself once as well.

Obamator

3/14/2024

I have a problem with connecting my Trust Webcam via an OTG hub to my Raspberry Pi Zero 2 W.

So, I have a problem with connecting my Trust Webcam via an OTG hub to my Raspberry Pi Zero 2 W. When I connect the webcam to the hub, it shows up, but I can't use it. However, when I connect the webcam directly to the Raspberry Pi using just a normal OTG cable, then it works fine. Does anyone have an idea on how to still use the webcam through the OTG hub? Because I also want to connect my 3D printer at the same time!

vyomagami

3/14/2024

Need a small suggestion on raspberry pi connection with laptop

Hi all, i need a small suggestion on raspberry pi connection with laptop, generally we use remote viewer to view raspberry pi screen in laptop/computer, can we reverse is like viewing laptop screen on raspberry pi using HDMI or any without any remote viewer....

Solution:

Good day @vyomagami , you can connect your laptop screen to a Raspberry Pi using an HDMI cable. Just plug one end into your laptop's HDMI port and the other end into the HDMI port on the Raspberry Pi. Then, set the Raspberry Pi to display input from the HDMI port, and you should see your laptop screen on the Raspberry Pi's display. No remote viewer needed

wafa_athmani

3/12/2024

implement a KNN (K-Nearest Neighbors) model for classification in MATLAB

hello ,I'm trying to implement a KNN (K-Nearest Neighbors) model for classification in MATLAB (Similar Image Finder project). do you know how to determine the optimal number of neighbors (k) for the datase

Solution:

Conventionally, the value of k is taken as sqrt(N) where N is the number of data points in your dataset. But a better approach is to take a random sample (5% of your main dataset) and use the trial and error method to find the optimal k value that works best for that particular sample. Statistically, the optimal k value you find out in that sample should also be the optimal k value for your entire dataset....

wafa_athmani

3/12/2024

Setting up a weather monitoring station in a remote location.

Hello, good evening, so we are studying to setting up a weather monitoring station in a remote location. And we are looking for suitable suitable temperature sensor which will capture data for weather forecasting and climate research. And we are confused about what would we look for 1: High-accuracy thermistor (0.1°C accuracy), fast response time (1 second), but requires additional heating power (2W) and has a larger footprint (requires a bulky weather shield). 2: Low-cost thermistor (1°C accuracy), slower response time (1 minute), lower power consumption (negligible, passive), and requires a smaller weather shield due to its compact size. ...

JohnBudweiser

3/8/2024

what would you want to become a Master of?

Considering the saying "jack of all trades, master of none". What have you achieved mastery in? If none yet, what would you want to become a Master of....

youcef_ali

3/8/2024

In Zynq SoC what is The fastest way to stream data from PL to PS ?

JeremyCook

3/6/2024

Use IMU to determine angular orientation about one axis

I've got a situation where I want to use the IMU-enabled XIAO nRF52840 Sense https://wiki.seeedstudio.com/XIAO_BLE/ in order to get the orientation in 360 degrees around the X axis. The answer would seem to be to use either the Z or Y axis acceleration. However, once you cross a certain threshold, the numbers could be + or - in orientation it seems. Therefore, one would need to combine both the Z and Y readings to get an accurate orientation. One idea I had was to use one axis to read measurements, while the other determines + or - orientation. However, I'm guessing there is a standard methodology for this. Using the Arduino IDE, FWIW. Hopefully this is the right place to post, please LMK and/or move if not!...

3/6/2024

Fail to porting lvgl 8.3.11 to esp32-s3 microcontroller

may i know why my microcontroller keep on rebooting below log report show (TG0WDT_SYS_RST) error. i just use all the resource provided on esp32_Port_lvlg github why i cannot make it work ? display spec: display driver=ili9488 (4 wire SPI interface) Touch Controller = GT911 (capacitive touch)...

Solution:

I change the whole ili9488 driver

ESPs3_log.pdf

wafa_athmani

3/1/2024

can anyone explain what is the microcontroller used here and how it work?

hey , this is inside nao robot leg , can anyone explain what is the microcontroller used here and how it work

youcef_ali

2/29/2024

in cpu/mpu architecture the memory can be used by two peripherals in the same time ?

in cpu/mpu architecture the memory can be used by two peripherals in the same time, one for reading and writing in the same time ?

souhardhya

2/28/2024

A simple quick http request example for RPi Pico using C-SDK

Hi everyone, I need a simple working example for sending a GET/POST request using RPI Pico. I already referred picohttps example, but that's not working for me. I'm getting nowhere. At first my problem was ssl certificate, I added that somehow now I'm getting error of connection closed. I don't all these https stuffs, I just want a http simple example, this shouldn't be difficult, right? Can anyone please help. I'm very new into bare c programming. I used Arduino a lot. Thanks a lot.

techielew

2/24/2024

Choosing between PlatformIO and ESP-IDF environments for ESP32-S3 development

Original post from @yepeto99: Hello everyone I'm a biomedical engineering trying to get into the entrepreneur world. My main goal for now is to get the most power out of the esp s3. I'm reading some books, forums and groups about the best IDE. ...

wafa_athmani

2/23/2024

microcontrollers vs. microprocessors what is the difference in embedded systems

Hello, i just wanna ask. microcontrollers vs. microprocessors what is the difference in embedded systems, and in what scenarios would you prefer one over the other?"

Camila_99$$

2/23/2024

Seeking Advice on Capacitive Touch Sensing ICs

Hii everyone I hope you had a wonderful day!!! I'm exploring capacitive touch sensing for a new project So plz can anyone share experiences with specific touch sensor ICs and provide insights into best practices for reliable touch interfaces?

Solution:

I have worked on Infineon series of parts and seen their Capsense which is ultimate. Note that it is MCU integrated in their PSoC series of chips and provides and GUI to configure sensitivity, pattern etc. If you're looking for external IC, check https://www.ti.com/product/FDC2214 opens up quite interesting applications. an beautiful reference design https://www.ti.com/tool/FDC2214PROXSEN-EVM (this actually matters alot - getting the design right just like PCB antennas)...

Camila_99$$

2/23/2024

The use of E-paper displays in IoT Projects

Hi! I'm considering the use of e-paper displays in my IoT project for low-power applications. What are the notable e-paper display modules available, and are there any specific microcontrollers compatible with these displays that you would recommend?

Solution:

This man is a champ! Have a look at https://hackaday.io/project/11537-nekocal-an-e-ink-calendar Used here is ED060SC4 800x600 Eink display. Some of the other projects: https://www.zephray.me/projects/...

Prachi Patil

2/21/2024

ESP-IDF CMake Error on ESP32C6 Board - Missing CJSON.c File

Hi everyone! I'm experiencing a build error with ESP-IDF on my ESP32C6 board and I'd appreciate some help. I'm trying to build the "blink" example in the get-started directory. Error Message: ......

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DevHeads IoT Integration Server

The DevHeads IoT Integration Server accelerates technology engineering by helping pro devs learn, share and collaborate.

DevHeads IoT Integration Server

The DevHeads IoT Integration Server accelerates technology engineering by helping pro devs learn, share and collaborate.