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  • 14/03/2019

    De acordo com o anúncio

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  • 10/06/2016

    Качество как обычно хорошее. Программаторы работают.

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  • 19/05/2016

    USB to TTL serial adapter works very well and is very small. It is perfect for use with an Arduino Pro Mini. It works with Windows 10 .

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  • 24/10/2016

    Testé avec module GPS GY-neo6mv2. Fonctionne correctement.

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  • 12/03/2019

    high quality at low price.

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  • 30/01/2017

    Товар качественный, получил за 2 недели.

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  • 28/08/2016

    I tested 3 units. All operated as expected with 5V serial signal interface. At 3.3V serial interface all 3 units shown a 4.2 V at pins 3V, TXD RXD in idle. The unit was powered via USB connector and I measured 5Vcc at 5V pad and 4.2V at 3V pad The CP2102 datasheet ( https://www.silabs.com/Support%20Documents/TechnicalDocs/CP2102-9.pdf ) states " Regulator Output Voltage, Typical 3.3V" The 4.2V I measured is out of specs ! To keep the signals in the 3,3V range I disconnected the RXD LED pull-up and placed a 100k pull-down resistor to RXD and placed a 1K/3K3 resistor attenuator on TXD, Next time possibly I will buy http://www.banggood.com/CH340G-USB-To-TTL-Auto-Converter-Adapter-STC-Brush-Module-p-1065230.html that shows a 3V3/5V switch

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  • 24/12/2015

    I tested all three of them, and they work like a charm! The only downside is that I got straight headers with mine... If you purchase this item to program Arduinos, be careful, as the DTR pin can not be directly connected to the RST pin on the Arduino. The solution: Take a 0.1µF ceramic capacitor (104 marking), and put one pin on the DTR pin of this adapter, and the other pin on the RST of your Arduino. The auto reset should work fine now! I also found out the bottom LED is not the power LED (there is none), but the USB suspend line. If the LED is OFF, it means that the adapter is sleeping. This means, it will consume less power than when it's awake. This feature is great too! The adapter will become active again when you try to communicate with it. This means that the LED will come on again. Again, pleased with the product, and I will buy again from Banggood!

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  • 20/07/2017

    Small module with microUSB connector, good for 5v arduino projects. However for 3.3v projects, the voltage on the 3v3 pin is actually 4.3v as are the voltages on the RX/TX line at idle. Apparently this is due to the RST input being tied not to 3.3 V out but to the Vbus in (5V) which back feeds into the 3.3V line pulling it up above spec; cut the trace you see coming from pin 9 before it reaches the capacitor, then optionally pull it to 3.3 via a 4k7 resistor to pin 6.

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  • 22/02/2017

    I'm using these with Win10. I downloaded the driver from http://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers On receipt 1 worked OK two I got windows doesn't recognize errors or the device has missbehaved or the ! in device manager. IN fact all three were a bit flakey. Then I tried another PC and all worked without problems. The first PC also had a USB3 connector when I tried that port all worked without trouble. It appears then that these devices can be a bit picky on the port they are plugged into. The data sheet for the cp2102 suggests a 4k7 resistor from the reset pin pin9 to the Vdd pin pin 6 to improve noise immunity this doesn't appear to be present. None the less when it works it works fine

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