HrayrGaloyan
Posts: 3
Joined: Fri Oct 19, 2018 4:18 pm

Is it possible to connect both Adafruit 16-Channel PWM/Servo Driver and touchscreen display to Raspberry Pi 3 Model B?

Fri Oct 19, 2018 4:52 pm

In most of tutorials both Adafruit 16-Channel PWM/Servo Driver and touchscreen displays are connected by putting them on Raspberry board and using all workspace.

Is there any way to connect both of them separately (ribbon cable, hdmi, usb, etc.)? Please suggest.

pcmanbob
Posts: 4464
Joined: Fri May 31, 2013 9:28 pm
Location: Mansfield UK

Re: Is it possible to connect both Adafruit 16-Channel PWM/Servo Driver and touchscreen display to Raspberry Pi 3 Model

Fri Oct 19, 2018 6:36 pm

Hi.

It would help if you specified exactly which servo driver board you intend to use, some of them are I2c which can have more than one device connect to it at one time, and which screen you want to use as there are lots of them on the market.

remember we can only offer advice from the information provided , you have not provided enough detailed information for a realistic answer.
Remember we want information.......................no information no help
The use of crystal balls & mind reading is not supported

HrayrGaloyan
Posts: 3
Joined: Fri Oct 19, 2018 4:18 pm

Re: Is it possible to connect both Adafruit 16-Channel PWM/Servo Driver and touchscreen display to Raspberry Pi 3 Model

Sat Oct 20, 2018 12:08 am

pcmanbob wrote:
Fri Oct 19, 2018 6:36 pm
Hi.

It would help if you specified exactly which servo driver board you intend to use, some of them are I2c which can have more than one device connect to it at one time, and which screen you want to use as there are lots of them on the market.

remember we can only offer advice from the information provided , you have not provided enough detailed information for a realistic answer.
I'm planning to use

Adafruit 16-Channel 12-bit PWM/Servo Driver - I2C interface - PCA9685 https://www.adafruit.com/product/815

TB6600 Stepper motor driver https://www.ebay.com/itm/Single-Axis-TB ... :rk:1:pf:0

Raspberry Pi 3 B+ 3.5 inch TFT LCD Touch Screen https://www.ebay.com/itm/Raspberry-Pi-3 ... :rk:1:pf:0

or

2.8" Nextion HMI TFT LCD Display Module Touch Screen 320x240 https://www.ebay.com/itm/2-8-Nextion-HM ... :rk:1:pf:0

pcmanbob
Posts: 4464
Joined: Fri May 31, 2013 9:28 pm
Location: Mansfield UK

Re: Is it possible to connect both Adafruit 16-Channel PWM/Servo Driver and touchscreen display to Raspberry Pi 3 Model

Sat Oct 20, 2018 6:36 pm

So looking at the links the servo driver board uses I2C so that's GPIO 2 & 3

The first screen uses SPI so that's GPIO 9, 10, 11 + 7/8

and the second screen uses serial so that GPIO 14 & 5

lastly the stepper controller that looks to run from 5v and seeing as the pi GPIO is only 3.3v you will need to design and build and interface circuit between the pi and the controller, but seeing as there are no details of the required control signals in the link it could required anything from 3 to 6 inputs but that's only a guess.

So yes I think you might be able to connect a combination of the servo driver , stepper driver and screen to your pi, but that's only based on the limited info included on each device.
I would suggest you do your own research on each device , especially the stepper controller to be sure.

The info on which gpio pins are used for each interface were obtained from here : https://pinout.xyz/#
Remember we want information.......................no information no help
The use of crystal balls & mind reading is not supported

HrayrGaloyan
Posts: 3
Joined: Fri Oct 19, 2018 4:18 pm

Re: Is it possible to connect both Adafruit 16-Channel PWM/Servo Driver and touchscreen display to Raspberry Pi 3 Model

Sun Oct 21, 2018 11:36 am

I am very grateful for your help. Please feel free to contact me if you need any help in mechanical 3D modeling field.
my email: [email protected]

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