Repetier-Server - the solution to control your printer from everywhere. Repetier-Software - the home of Repetier-Host (Windows, Linux and Mac OS X) and Repetier-Firmware. > but with it enabled it hangs every time. > With UI_DISPLAY_TYPE disabled the firmware works > sanguinololu board just in case they were bloatingĭisabling SD support is enough. > I also disabled eeprom and sd support for my They are the start addresses in LCD ram where the lines have to be stored. > they are right for my 4 bit 16x2 display. > I can't seem to find out what these mean to see if > I wondered if the line offsets could be the > I have checked all my pins match those in the There is a subtype of PCF8574 with different addresses. > the address pins on the PCF8574 to +5V. > I also checked my I2C address is 0x4e by tying all You can set it that light, you won't see a thing even if it worked. Possible reasons: Wrong address, communication error caused by to long cable, no pullup resistors for SCL/SDA (don't know if your sanguino has them already on chip, in this schamtic I couldn't find any:, gen6 has 4,7k to 5V)īefore initialization you should see some black dots. The I2C communication is blocking if it doesn't get the requested feedback. > connect via the host software it hangs during > as the display remains blank and when I try and > However I think something is causing it to "hang" The power supply to the IO Expander is O.K.> I have set up a 16x2 LCD over I2C via a PCF8574 I can manually turn on Stripes by connecting MOSFET-driver pins to Arduinos 5V (or 3.3V) The MOSFET driver pins have to be pulled to logic 1 (above 2.2V) in order to turn on the stripe.Ĭurrently Arduino runs an blink example, that turns all Expander IO pins on/off every second (using Arduino Wire Library), but the MOSFET-driver does not turn on/off any Stripe. The Expanders Bus address is set via Expanders A0-A2 pins to 0 (0x20). The Expander pins are connected to a MOSFET-driver that turns on/off 12V LED stripes. I have following setup (see also schematic in the end)Īrduino Nano is connected via I☬ to the PCF8575C ( link) IO Expander.īoth, SCL and SDA have 10kOhm pull-ups to 5V.
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