{"id":159,"date":"2018-06-16T23:22:04","date_gmt":"2018-06-16T16:22:04","guid":{"rendered":"https:\/\/prosindo.com\/blog\/?p=159"},"modified":"2021-11-09T06:51:59","modified_gmt":"2021-11-08T23:51:59","slug":"calibrate-waveshare-5-resistive-touchscreen","status":"publish","type":"post","link":"https:\/\/prosindo.com\/blog\/2018\/06\/16\/calibrate-waveshare-5-resistive-touchscreen\/","title":{"rendered":"Calibrate Waveshare 5″ Resistive Touchscreen (and 7.9″ Capacitive)"},"content":{"rendered":"

config.txt
\nmax_usb_current=1<\/code>
\nhdmi_group=2<\/code>
\nhdmi_mode=87<\/code>
\nhdmi_cvt 800 480 60 6 0 0 0 <\/code>
\nhdmi_drive=1<\/code><\/p>\n

# install calibrator and evdev (allows multiple keyboards mice treated as separate device)
\nsudo apt install xinput-calibrator xserver-xorg-input-evdev<\/code><\/p>\n

# make evdev higher number than libinput
\nsudo mv \/usr\/share\/X11\/xorg.conf.d\/10-evdev.conf \/usr\/share\/X11\/xorg.conf.d\/45-evdev.conf<\/code><\/p>\n

# list devices
\nxinput<\/code><\/p>\n

# view calibration option
\nxinput --list-props <deviceid><\/code><\/p>\n

# calibrate
\nxinput_calibrator<\/code><\/p>\n

# copy paste the result like below to \/usr\/share\/X11\/xorg.conf.d\/99-calibration.conf<\/code>:
\nSection \"InputClass\"<\/code>
\nIdentifier \"calibration\"<\/code>
\nMatchProduct \"BYZHYYZHY By ZH851\"<\/code>
\nOption \"Calibration\" \"182 3859 277 3944\"<\/code>
\nOption \"SwapAxes\" \"0\"<\/code>
\nEndSection<\/code><\/p>\n

# check\u00a0 the values
\nDISPLAY=:0 xinput list-props \"BYZHYYZHY By ZH851\"<\/code><\/p>\n

# manual set values
\nDISPLAY=:0 xinput set-prop \"BYZHYYZHY By ZH851\" \"Evdev Axis Calibration\" 200, 3800, 275, 3850<\/code><\/p>\n

ALTERNATIVE (using libinput):
\n# check calibration values
\nxinput_calibrator -v<\/code>
\nDEBUG: Found that 'BYZHYYZHY By ZH851' is a sysfs name.<\/code>
\nDEBUG: Adding click 0 (X=129, Y=86)<\/code>
\nDEBUG: Adding click 1 (X=655, Y=96)<\/code>
\nDEBUG: Adding click 2 (X=133, Y=406)<\/code>
\nDEBUG: Adding click 3 (X=669, Y=401)<\/code><\/p>\n

# check screen resolution
\nxrandr | grep current<\/code>
\nScreen 0: minimum 800 x 480, current 800 x 480, maximum 800 x 480<\/code><\/p>\n

# calculate values
\na = (screen_width * 6 \/ 8) \/ (click_3_X - click_0_X)<\/code>
\nc = ((screen_width \/ 8) - (a * click_0_X)) \/ screen_width<\/code>
\ne = (screen_height * 6 \/ 8) \/ (click_3_Y - click_0_Y)<\/code>
\nf = ((screen_height \/ 8) - (e * click_0_Y)) \/ screen_height<\/code><\/p>\n

a = (800 * 6 \/ 8) \/ (669 - 129) = 1.1111<\/code>
\nc = ((800 \/ 8) - (1.1111 * 129)) \/ 800 = -0.0542<\/code>
\ne = (480 * 6 \/ 8) \/ (401 - 86) = 1.1429<\/code>
\nf = ((480 \/ 8) - (1.1429 * 86)) \/ 480 = -0.0798<\/code><\/p>\n

# test new values
\nxinput set-prop \"BYZHYYZHY By ZH851\" \"libinput Calibration Matrix\" a, 0.0, c, 0.0, e, f, 0.0, 0.0, 1.0<\/code><\/p>\n

xinput set-prop \"BYZHYYZHY By ZH851\" \"libinput Calibration Matrix\" 1.1111, 0.0, -0.0542, 0.0, 1.1429, -0.0798, 0.0, 0.0, 1.0<\/code><\/p>\n

# if calculation incorrect, reset and repeat calculation above
\nxinput set-prop \"BYZHYYZHY By ZH851\" \"libinput Calibration Matrix\" 1.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 1.0<\/code><\/p>\n

# make changes permanent to \/usr\/share\/X11\/xorg.conf.d\/99-calibration.conf<\/code>:
\nSection \"InputClass\"
\nIdentifier \"calibration\"
\nMatchProduct \"BYZHYYZHY By ZH851\"
\nOption \"TransformationMatrix\" \"1.1111 0.0 -0.0542 0.0 1.1429 -0.0798 0.0 0.0 1.0\"
\nEndSection<\/code><\/p>\n

For 7.9″ Capacitive Screen:<\/p>\n

add this lines to \/boot\/config.txt:
\n#disable these settings below
\n#display_auto_detect=1
\n#dtoverlay=vc4-kms-v3d
\n#max_framebuffers=2
\nmax_usb_current=1<\/code>
\nhdmi_group=2<\/code>
\nhdmi_mode=87<\/code>
\nhdmi_timings=400 0 100 10 140 1280 10 20 20 2 0 0 0 60 0 43000000 3<\/code>
\ndisplay_rotate=3 # 1 - 90deg, 2 - 180deg, 3 - 270deg<\/code><\/p>\n

Rotate 0 degree:
\nxinput set-prop \"WaveShare WaveShare\" \"libinput Calibration Matrix\" 1.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 1.0<\/code><\/p>\n

Rotate 90 degree:
\nxinput set-prop \"WaveShare WaveShare\" \"libinput Calibration Matrix\" 0.0, 1.0, 0.0, -1.0, 0.0, 1.0, 0.0, 0.0, 1.0<\/code><\/p>\n

Rotate 270 degree:
\nxinput set-prop \"WaveShare WaveShare\" \"libinput Calibration Matrix\" 0.0, -1.0, 1.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0<\/code><\/p>\n

# make changes permanent to \/usr\/share\/X11\/xorg.conf.d\/99-calibration.conf<\/code>:
\nSection \"InputClass\"
\nIdentifier \"calibration\"
\nMatchProduct \"WaveShare WaveShare\"
\nOption \"TransformationMatrix\" \"0.0 -1.0 1.0 1.0 0.0 0.0 0.0 0.0 1.0\"
\nEndSection<\/code><\/p>\n

Source:
\nhttps:\/\/www.waveshare.com\/wiki\/5inch_HDMI_LCD_(B)
\nhttps:\/\/www.waveshare.com\/wiki\/7.9inch_HDMI_LCD
\nhttps:\/\/wiki.archlinux.org\/index.php\/Talk:Calibrating_Touchscreen<\/p>\n","protected":false},"excerpt":{"rendered":"

config.txt max_usb_current=1 hdmi_group=2 hdmi_mode=87 hdmi_cvt 800 480 60 6 0 0 0 hdmi_drive=1 # install calibrator and evdev (allows multiple keyboards mice treated as separate device) sudo apt install xinput-calibrator xserver-xorg-input-evdev # make evdev higher number than libinput sudo mv \/usr\/share\/X11\/xorg.conf.d\/10-evdev.conf \/usr\/share\/X11\/xorg.conf.d\/45-evdev.conf # list devices xinput # view calibration option xinput –list-props <deviceid> # calibrate … Continue reading “Calibrate Waveshare 5″ Resistive Touchscreen (and 7.9″ Capacitive)”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-159","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/prosindo.com\/blog\/wp-json\/wp\/v2\/posts\/159","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prosindo.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prosindo.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prosindo.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prosindo.com\/blog\/wp-json\/wp\/v2\/comments?post=159"}],"version-history":[{"count":9,"href":"https:\/\/prosindo.com\/blog\/wp-json\/wp\/v2\/posts\/159\/revisions"}],"predecessor-version":[{"id":251,"href":"https:\/\/prosindo.com\/blog\/wp-json\/wp\/v2\/posts\/159\/revisions\/251"}],"wp:attachment":[{"href":"https:\/\/prosindo.com\/blog\/wp-json\/wp\/v2\/media?parent=159"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prosindo.com\/blog\/wp-json\/wp\/v2\/categories?post=159"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prosindo.com\/blog\/wp-json\/wp\/v2\/tags?post=159"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}