PCA9685 wrong detection

[wutu]

PCA9685 is badly detected.

I2C Scan:
I2C Addresses in use Known devices
0x40 SI7021 Temp/Hum Sensor, INA219

[tozett]

firmware version may help to complete this error-picture?

[Martinus]

PCA9685 is badly detected.

I2C Scan:
I2C Addresses in use Known devices
0x40 SI7021 Temp/Hum Sensor, INA219

This will be shown in the next build. But remember that this is just a list of POSSIBLE devices as it only verifies that "something" has acknowledged the address. It could be anything...
That's why is says "Known devices", meaning that we know that some devices are typically found on that address.

[videobelu]

A question .....i am a new user .....i would like to use ESP8266 with ESPEasy to drive 2 PCA9685 to have a totale of 32 PWM outputs.....
There is a solution???

Thank you

Fabrizio

[costo]

A question .....i am a new user .....i would like to use ESP8266 with ESPEasy to drive 2 PCA9685 to have a totale of 32 PWM outputs.....
There is a solution???

Thank you

Fabrizio

Did you look at the device page for PCA9685 ?
The answer is given there

Output

You can control output pins on this chip with the following http command:

http://<ESP IP address>/control?cmd=pcapwm,<pin>,<Level>

Pin can be chosen between 0 and 15. Level can be set between 0 and 4095.

[tozett]

i only have 1 rfid reader on i2c, but as far as i understand,
a second one would also be wired to the same pin. right?

http://quick2wire.com/wp-content/upload ... mage00.png

so ho to control two (2) of i2c devices, like videobelus asked

to drive 2 PCA9685 to have a totale of 32 PWM outputs.

with this https-call:

Code: Select all

http://<ESP IP address>/control?cmd=pcapwm,<pin>,<Level>

when my assumtion is right, that all i2c devices are wired to the same pin?

maybe like for the PCF8574, adress via the table mentiond here?
http://www.esp8266.nu/index.php/PCF8574

[videobelu]

i only have 1 rfid reader on i2c, but as far as i understand,
a second one would also be wired to the same pin. right?

http://quick2wire.com/wp-content/upload ... mage00.png

so ho to control two (2) of i2c devices, like videobelus asked

to drive 2 PCA9685 to have a totale of 32 PWM outputs.

with this https-call:

Code: Select all

http://<ESP IP address>/control?cmd=pcapwm,<pin>,<Level>

when my assumtion is right, that all i2c devices are wired to the same pin?

maybe like for the PCF8574, adress via the table mentiond here?
http://www.esp8266.nu/index.php/PCF8574

I think it is possible to add many i2c devices (with different address) but in the command line there is not the ability to address the correct device......for example.......device 0 out from 0 to 15 ,device 1 out fro 16 to 31 and so on....