I have successfully booted the ESP-03 units with following hardware wiring:
GPIO0 Pull-up for normal or pull-down for bootloader mode.
Pull-up = resistor to VCC.
Pull-down = resistor to GND.
Its possible to wire GPIO directly but then its hard to use them in future if needed. My resistors is 10k right now.
hansaya wrote:i had awful lot of trouble getting the ESP-03 module to work. This what I came up with to get the device up and running
Connect these lines
CONNECT GPIO15 TO GROUND
CONNECT CH_PD TO HIGH
test this with serial terminal with 9600bud
This should get the device going but then you need to change the firmware because the one came with mine did not reply to my AT commands
CONNECT GPIO 0 TO GROUND
with the the pins above. Then go with normal procedures to change the firmware. (115200bud)
After the firmware update, you still need to keep the GPIO15 at ground to work.
Hopefully somebody will come up with a good firmware to enable all the GPIO pins.
Lets get the party started and +1
I like ESP8266 and ESP8285 and ESP32