A strip of 8 'standard' WS2812b RGB LEDs used as a light on a pan tilt hat just flickers random colours on the first 5 or 6 LEDs.
I don't have any RGBW LEDs to use as a comparison test.
This has been reported in the pimoroni forums by other users, but I don't think it has been resolved.

The tilt angle seems to work best in the range [0, 120] for the recommended hardware.
This library defaults to [-90, 90], which may not be ideal.

Pan angles are fine as is.

Hey, I was wondering how I could control the power supply provided on the pan/tilt HAT. I want to control a laser, but the GPIO pinout is taken by the HAT. I noticed there are places to hook my laser up to the HAT, but it gives a steady supply of power, instead of being able to tweak when it comes on and off with code.

As title, I get an error version_info is not defined

See https://forums.pimoroni.com/t/pan-tilt-hat-error/8039

The initialisation value of both servos is out of range, and needs to be caught and handled rather than failing with an error when a user runs get_pan or get_tilt.

Hello.

I've noticed that Pimoroni Dashboard wont work in Rapsbian Buster (mandatory for RPi4).

Hi
On the top of the Pan-Tilt HAT are some breakouts for
Power, SPI, I2C, UART, PWM and SPI.

The documentation (on GitHub) does not mention any of these pins.
The only one I wanted to check was the PWM pin.
Does that bring the "Data" line from the "LIGHT" connector to the the edge of the board or is that the unused 4th PWM Output from the PIC?

Thanks

`Python 2.7.9 (default, Sep 17 2016, 20:26:04)
[GCC 4.9.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.

import pantilthat
Traceback (most recent call last):
File "", line 1, in
File "/usr/local/lib/python2.7/dist-packages/pantilthat/init.py", line 15, in
pantilthat = PanTilt(i2c_bus=SMBus(1))
File "/usr/local/lib/python2.7/dist-packages/pantilthat/pantilt.py", line 63, in init
self._set_config()
File "/usr/local/lib/python2.7/dist-packages/pantilthat/pantilt.py", line 100, in _set_config
self._i2c_write_byte(self.REG_CONFIG, config)
File "/usr/local/lib/python2.7/dist-packages/pantilthat/pantilt.py", line 191, in _i2c_write_byte
raise IOError("Failed to write byte")
IOError: Failed to write byte
import pantilt-hat
File "", line 1
import pantilt-hat
^
SyntaxError: invalid syntax
`

Those are the erros the i am facing if anybody could please help

pantilthat refuses to show up in my available modules for python2.
I have run sudo apt-get install python-pantilthat and I am able to verify that pantilthat is installed for python3, but no matter what I try I am unable to get it to install for python2

When getting the angle of the tilt, the angle of the pan is returned.

Line 421 of pantilt.py of get_servo_two is:

us = self._i2c_read_word(self.REG_SERVO1)

to fix this should read:

us = self._i2c_read_word(self.REG_SERVO2)

I've found that if I call pan() and tilt() right after each other, with no delay in between, both servos seem to get stuck.

import pantilthat
import time

dir = 1
while True:
  try:
    pantilthat.pan(dir*90)
# Without this sleep, the servos get stuck most of the time
#    time.sleep(0.1)
    pantilthat.tilt(dir*45)
    dir *= -1
    time.sleep(2)
  except KeyboardInterrupt:
    break

On attempting to install in a python 3.5 environment (Stretch desktop on pi3) I receive the following error, any ideas?

  File "/home/pi/.homeassistant/deps/lib/python3.5/site-packages/pantilthat/pantilt.py", line 415, in get_servo_one
    return self._servo_us_to_degrees(us, us_min, us_max)
  File "/home/pi/.homeassistant/deps/lib/python3.5/site-packages/pantilthat/pantilt.py", line 131, in _servo_us_to_degrees
    self._check_range(us, us_min, us_max)
  File "/home/pi/.homeassistant/deps/lib/python3.5/site-packages/pantilthat/pantilt.py", line 120, in _check_range
    max=value_max))
ValueError: Value 51200 should be between 575 and 2325

on raspbian, all updated/upgraded.
library works fine with hat in python2
when I try to import in python3 it kicks out with needing python3-smbus and that i should install it.
reinstalled both python3-pantilthat & python3-smbus using apt-get --reinstall ... no joy.

thoughts? i may try the pip3 install for kicks?

Do you plan to implement the ability to read the current servo value?

Hey I've been looking all over to get face tracking servos on pca9865 16 servo driver but can't seem to find any projects that work is there any way that I can modify this one or can anyone help me??

The README for this project suggests installing a Pimoroni dashboard with:

apt-get install pimoroni

but that package isn't in the Raspberry Pi OS repository. Presumably it is necessary to add another repository to the apt configuration.

Hi.

I've tried to install pantilthat 0.0.7 from pip inside a virtual env. It installs but you cannot use it since it gives you an error at import.

The problem is that your library uses smbus, but there is no smbus for pip, so it wont work in virtual envs.

The solution is to replace the use of smbus for smbus2 in your library (all references)

Maybe you can use this library instead since its more common everyday to use virtual envs with pip.

See: http://forums.pimoroni.com/t/pantilthat-python-py-wont-work-anymore-but-python-commandline-does-solved/5159

Hi,
I used my pan tilt HAT with great succes on my Raspberry Pi 3B+ bur now I moved to a Pi 4 and somehow the pan tilt HAT won't respond anymore. When I plu in the power to the Pi, the servos do move some bit. I installed the pan tilt software. When I want to test an example I get the following error:

python timeout.py
Traceback (most recent call last):
File "timeout.py", line 10, in
pantilthat.pan(-90)
File "/usr/lib/python3/dist-packages/pantilthat/pantilt.py", line 466, in servo_one
self.setup()
File "/usr/lib/python3/dist-packages/pantilthat/pantilt.py", line 80, in setup
self._set_config()
File "/usr/lib/python3/dist-packages/pantilthat/pantilt.py", line 118, in _set_config
self._i2c_write_byte(self.REG_CONFIG, config)
File "/usr/lib/python3/dist-packages/pantilthat/pantilt.py", line 209, in _i2c_write_byte
raise IOError("Failed to write byte")
OSError: Failed to write byte

What goes wrong here?

I have the Pimoroni pantilt hat attached to a raspberry pi 4 8gb with the neopixel stick. In the program I am working on, I use Tensorflow and Opencv to track objects. The program works, but within minutes of starting I get the error:

OSError: failed to write byte

Earlier in the message that is spit out when the program crashes, it says "failure to read byte." I believe it has something to do with i2c, even though I am not using i2c in my code or set up. I can provide more information, I'm just not sure what more is relevant.