AXE033 No Display

N

novolts

Senior Member
Hi Guys
I have assembled the axe033 with the add on clock module when I connect it to a battery pack the display is blank
I am using a 6 volt battery pack and I have checked with a multi meter that I am getting power at the board
I would appreciate any help in this matter. I have checked and there are no shorts across any of the connections for the OLED display
I would appreciate any help
Thanks
Novolts
 
E

eggdweather

Senior Member
Did you: 'Solder a resistor in the position RB. The value of the resistor depends on the
power supply - for 4.5V use the zero ohm (single black band) resistor, for 5V use
the 5.6 ohm resistor.'?
 
N

novolts

Senior Member
Thanks for the reply eggweather
I did solder the 5.6 ohm resistor across R.B
I have adjusted the contrast but the display is still blank
I don't know how but I think the oled display may be damaged
Thanks
Novolts
 
E

eggdweather

Senior Member
Have you sent it any data? Connected it to a PICAXE. e.g. to print the text ‘Hello’ the command is simply: serout B.7,N2400,(“Hello”)

Also, extract from data sheet:

Connect a power supply to the main connection header (red wire to V+, black
wire to 0V). The LCD should display a time message when the two CLK
contacts are shorted (e.g. with the jumper provided in the kit) and once the
contrast is adjusted (via the variable resistor marked ‘contrast’). If the LCD
does not display a message check the power, contrast and the 14 connector pins
carefully. (Note that if the optional clock upgrade chip is not fitted, the time
will always show as 00/00/00 00:00)

Does that work?
 
N

novolts

Senior Member
Hi eggdweather

I did connect it to a picaxe and sent :serout B.7,N2400,(“Hello”)
The display did illuminate briefly but the message was garbled
I also connected it to a power supply and shorted out CLK the display stayed blank
I am going to re solder all the joints tomorrow
thanks for your help
much appreciated
novolts
 
N

nick12ab

Senior Member
eggdweather said:
Did you: 'Solder a resistor in the position RB.
Click to expand...
novolts said:
I have adjusted the contrast but the display is still blank
Click to expand...
These will make no difference, because:
novolts said:
it is the AXE033Y OLED display I am using
Click to expand...

eggdweather said:
The display did illuminate briefly but the message was garbled
Click to expand...
Most likely there is a bad connection on the data bus, the 8 pins of the connector nearest the left side of the OLED. Check if any pins are shorted and check all connections between the PICAXE-18M2 on the AXE133 PCB (port B) and the pins on the OLED not an AXE133.
 
Last edited:
N

novolts

Senior Member
Hi All
I finally got around to carrying continuity tests the fault was due to poor soldering joints
Expensive exercise though I tried to desolder but unfortunately I also removed the pads as well
I am now in the process of trying to work out the connections for the clock board to try and put
the components on a breadboard to connect it to the undamaged oled display
once again thanks to all
novolts
 
You must log in or register to reply here.
Top