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21% OFF 3 Parça CJMCU CP2102 USB TTL/Seri Modül İndiricisi US$10.99 US$13.99 View It

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jrigvd1995 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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jrigvd1995 Hey, It's me once again! Tried it with 3.3v logic today. The LED's draw too much current for the CP2102 to detect 3.3v high and low. I replaced the 2 resistors (220 ohm, 221 marking) with 1kOhm (102 marking), and now they work very well!
Cevap 25/12/2015

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