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I'm using CH340E USB to UART communication IC. Problem is, after power on, until any single bit of data is sent through PC terminal, no data is transmitting through the IC. MCU working fine. Once sending at least one bit of data from PC terminal, all communication works and data can be read on...
We use SIM7600G-H for an IoT project which is mobile and moving most of the time. We use the ordinary 4G GSM antenna and the GPS antenna.
Issue is, the signal gain is not satisfactory. While the device is in remote areas or middle of river, it can not communicate or can not get the GPS...
Intentionally man!
That is not the main focus of the issue. I hope you are mature enough to understand. Thank you!
according to calculation, many things go a different way from practical.
The transformer is ok. but size is the issue. As these types of circuits need to fit in very small enclosers, everything is placed in so a way to fit all in. Also, price is another issue too. so a capacitor is the best choice. If we use a higher R1 value, the resistor loss becomes high and it...
Dear supurior,
Thanks for finding it nonsense as I can not expose everything directly due to NDA at the first message. But I've to do some now. Here is the circuit diagram we use. Of cource kindly don't find mistakes drawing the TRIAC connections and where the MCU VDD connected which is not our...
There are different types of Transformerless power supply designs. Most easy and common one we use in small designs is:
Besides this design, we also use this design,
These circuits are very simple and have the minimum components. But the problem is, the zener diode frequently gets...
In the market, there are different types of 4G LTE-based dongles which have hotpot features. That means, if anyone put a SIM in there and simply powers it up it works as a WiFi router. And then, we can connect multiple devices with this hotspot.
Now, my question is, how we can make it? If I...
I was working on a project to use STM32F105RBT6 as a USB Host and another device which is CH340 based acting as a device. Now, using the STM32CubeMx, I have generated the code for the USB host that can detect if there is anything in the USB port, can detect if it is disconnected.
While...
I was trying to connect the STM32F105RBT6 board with PC. But the USB driver not found.
Tried different drivers from the internet, but no one actually works. It says already updated driver installed. Do you have any idea to find a perfect driver?
Thanks in Advance.
We know that we can scan nearby Bluetooth devices through our phones. But how we can scan nearby available Bluetooth devices using Bluetooth modules such as HC-05/06 or JDY-08 etc?
Thanks in advance.
1648993590
I used this code after reading that the HC05 can find the scan list.
#include...
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