ESP8266 Community Forum

- Sat Nov 04, 2017 1:59 pm #71534

meant to add: do the TX/RX lines need PU?

How did you connect your other esp8266 to the Pi? I see you mentioned ttyAMA0; is that then configured correctly on the Pi? And not allocated to bluetooth or other service on the Pi?
I don't know much about Pi's, does AMA0 need a serial-TTL converter for connection to the esp8266.
Sorry that I've just given you extra questions, but perhaps it will prompt some thought from you as to why it doesn't work.

- Sat Nov 04, 2017 7:57 pm #71547

How did you connect your other esp8266 to the Pi? I see you mentioned ttyAMA0; is that then configured correctly on the Pi? And not allocated to bluetooth or other service on the Pi?

My orig 8266 is V3 Wireless module NodeMcu 4M bytes Lua WIFI (aliexpress $3.58) where the 8266 is mounted on a mother board which has a uUSB, Rst & Flash buttons. It took some playing but Arduino IDE on my Pi3 via USB to the 8266 and it programmed.

I don't know much about Pi's, does AMA0 need a serial-TTL converter for connection to the esp8266.

That I'm not sure of - but the web seems to have several pages about that subject. The chip I'm trying to get working is: https://www.aliexpress.com/item/2015-Ne ... 0.0.yrrALt

- Mon Nov 06, 2017 11:10 am #71584 Sorry to be a pain - I know I could use the NodeMCU board with the uUSB - which I have working. But "No, you can't do/make that work". "OH? Watch me!". Like it's a personal affront, challenge. Let me kind of start over.

An image of a RaspPi 3 and the following esp8266 chip.

8266back.jpg

8266front.jpg

The RasPi is running Arduino IDE (used to program the NodeMCU board)
I have a proto strip where I have 3.3v, gnd, tx & rx wired RasPi > proto. Then uclips from the proto board to the 8266 (because the oc is 2mm? - doesn't match the .1").

I also have 10K PUs to Rst & En. In another web post it said I needed to PU gpio0 & PD 15. Then:
PD GPIO0
PD Rst momentary
release GPIO0

Nope. My IDE compiles (blink code) and when it gets to the upload it just sits - doesn't run, doesn't error. I'm going to make this my last shot and then concede

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- Mon Nov 06, 2017 12:37 pm #71585 I would take some unknowns out of the equation, perhaps revert to using the usb out of the pi, to a serial/ttl converter into tx/rx of the esp8266, and see what happens. I think there's an issue with the uart port out of the pi.