From 737ef135f9fdfcf6da8feac61a8c196e4911f221 Mon Sep 17 00:00:00 2001 From: Donald Burr Date: Tue, 17 Feb 2015 20:55:56 -0800 Subject: [PATCH] Add info about i2c breakage on newer firmware --- NOTES/LCD.HOWTO | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/NOTES/LCD.HOWTO b/NOTES/LCD.HOWTO index 281e168..d79548f 100644 --- a/NOTES/LCD.HOWTO +++ b/NOTES/LCD.HOWTO @@ -1,5 +1,9 @@ From: https://learn.adafruit.com/adafruit-16x2-character-lcd-plus-keypad-for-raspberry-pi/usage +NOTE: if i2c does not appear to work, +edit /boot/config.txt and add: dtparam=i2c1=on +(cf. http://raspberrypi.stackexchange.com/questions/27073/firmware-3-18-x-breaks-i2c-spi-audio-lirc-1-wire-e-g-dev-i2c-1-no-such-f) + * edit /etc/modules, add i2c-bcm2708 and i2c-dev * sudo apt-get install i2c-tools python-smbus * confirm that the lcd was detected by running: