Calibrating a 5″ Raspberry Pi touchscreen in Jessie

Previously, I posted about a 5″ touchscreen for the Raspberry Pi.

But I did not mention calibrating the touchscreen.

After a week’s holiday, I came back and sorted this fairly easily.

I was using Raspbian Jessie from NOOBS 1.8

First I installed a new utility:

sudo apt-get install xinput-calibrator


To calibrate the touchscreen, go to the menu>preferences>select “Calibrate touchscreen”

Touch each of the red crosses on the screen in turn, then cut and paste the resulting snippet to the following file by using this command:

sudo nano /usr/share/X11/xorg.conf.d/98-calibration.conf

(this will create a new file and open it for editing)

My entries are below:

Section “InputClass”

Identifier “calibration”

MatchProduct “ADS7846 Touchscreen”

Option “Calibration” “120 3970 205 3920” #(enter your numbers here)

Option “SwapAxes” “0”


Ctrl-O to save, Crtl-x to exit, and then reboot, and your pointer should follow your finger correctly!

Orange Pi One

This is just a quick and dirty guide to getting the Orange Pi One up and running.

First steps:

  1. DON’T connect a microUSB charger to the MicroUSB port. That port is for USB On the go only, i.e. for connecting flash drives etc.
  2. You will need a 5V power supply with a 4mm x 1.7mm barrel connector, centre positive. I used a USB to barrel connector lead, and a Samsung USB charger, which can easily supply 2A. Apparently PSP chargers work as well.
  3. You will need an SDcard for the OS. At least 8GB and preferably at least class 4. A fast one is recommended, apparently the Opi1 may not boot with a slower one.
  4. EDITED:I have since found that some class 10 cards will not work with the OPi1 or even the Raspberry Pi. I used class 4 Kingston 8GB cards, and they work perfectly with both.
  5. If you power on the OPi1 without a properly set up SDcard, nothing will happen, except that the LEDs on the Ethernet port will light. THIS IS NORMAL.
  6. Prepare the SDcard. I followed this excellent guide:
  7. Once connected up with a valid Boot image, the Ethernet port LEDs light up, followed after a pause of about 20 seconds by the red LED and then the green one will flicker as the system loads. (note on some boards the green LED lights first)
  8. Note: I noticed that if the Ethernet port is not connected, it takes a lot longer to start up.

I have added a Youtube video showing a working Orange Pi One  (and a faulty one)