ESP8266 Community Forum

- Thu Jan 29, 2015 5:47 pm #8492 Got the 4050 and it seems to be working well.

- Sat Jan 31, 2015 11:20 am #8617 Re last post...

That's the simplest and obvious choice but for some unknown reason it did not work for me, I tried several chips and various resistor values... My scope went MIA so I couldn't check for anomalies...

I've actually found several other reports of dividers not working, probably time to check this again as I am now armed with an inexpensive (but decent enough) USB scope besides, using a couple of resistors is probably the preferred solution...
Mike

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- Sun Feb 01, 2015 5:46 am #8682 Hello everyone!

I've tried the voltage divider with a 1K and a 2K resistor and the 4050 too, but neither did work for me. It's working when I'm connecting the arduino's TX directly to the RX on the ESP8266. I'm not sure if I've got the 4050 wired up correctly, but I'm pretty sure about the resistors. (:

This is how I'm using the 4050:


Do you have any idea on what could be the problem here?

- Thu Feb 12, 2015 3:44 pm #9579 Hi!

Seems level shift is not necessary. Here is written have no problem. Anyone see a issue?

PS: I'm using TX/RX from ESP connected to Arduino and everything is fine so far.