- Tue Nov 24, 2015 6:49 am
#34862
Well, i thought the same thing. Maybe it's the FTDI. My FTDI can supply both 5v and 3.3v, regulated by a jumper. I've placed this jumper on 3.3v so that should not be the problem. However, since I still do not know if the FTDI is functional I've plugged the TX and RX from the ESP directly to the GPIO UART TX and RX pins of my Raspberry Pi, still with an external power source.
The Raspberry Pi Tx and RX supply about 3.2v according to this thread: https://www.raspberrypi.org/forums/view ... 44&t=97134
and someone has been able to get this working without any specials things: http://www.instructables.com/id/Connect ... /?ALLSTEPS
However, When I use these pins the same things happends,
pi@pimatic ~/esp $ sudo python esptool/esptool.py --port /dev/ttyAMA0 write_flash 0x000000 "nodemcu_integer_0.9.6-dev_20150704.bin"
Connecting...
A fatal error occurred: Failed to connect to ESP8266
Also have been trying to start minicom on different baudrates while the ESP was powered on and connected to the Raspberry Pi
minicom -D /dev/ttyAMA0 -b 9600
No response at all, can't type any commands and minicome gives me status "offline".
Still, the fact that this is happening on two different ESP chips makes me believe it's something I'm doing wrong. The only thing I can think off so far is me using 2x 1,2v batteries instead of 2x 1.5v but I'm, not sure this is an issue.
Arjen.
The Raspberry Pi Tx and RX supply about 3.2v according to this thread: https://www.raspberrypi.org/forums/view ... 44&t=97134
and someone has been able to get this working without any specials things: http://www.instructables.com/id/Connect ... /?ALLSTEPS
However, When I use these pins the same things happends,
pi@pimatic ~/esp $ sudo python esptool/esptool.py --port /dev/ttyAMA0 write_flash 0x000000 "nodemcu_integer_0.9.6-dev_20150704.bin"
Connecting...
A fatal error occurred: Failed to connect to ESP8266
Also have been trying to start minicom on different baudrates while the ESP was powered on and connected to the Raspberry Pi
minicom -D /dev/ttyAMA0 -b 9600
No response at all, can't type any commands and minicome gives me status "offline".
Still, the fact that this is happening on two different ESP chips makes me believe it's something I'm doing wrong. The only thing I can think off so far is me using 2x 1,2v batteries instead of 2x 1.5v but I'm, not sure this is an issue.
Arjen.
