Forum >problems with Arduino meet RPi expansion
problems with Arduino meet RPi expansion
Tarjan.Peter 2016-08-26 10:40:02 3441 Views2 Replies I have some problems concerning the Arduino Expansion Shield for Raspberry Pi model B (SKU: DFR0311). I wonder if anyone else has the same issues or I am missing something completely trivial here. Either that or something weird is going on with the logic converter.
1) I tried connecting a pushbutton between CE1 (on the SPI header) and GND, with the internal pull-up resistor enabled. When the button is not pressed, CE1 is at 5V (as it should be). When I press the button, it pulls CE1 down to ground (as it should). HOWEVER, it does not pull pin 26 down from 3V3 to GND, even though that is the same pin (only at opposite ends of the logic level converter).
2) I tried the blink.py example from your wiki page with GPIO4 on the green GPIO expansion header. I used the exact same program, yet it does not blink the LED connected on GPIO4. (Yes, correct polarity.) It turns it on, and it stays on. Sometimes it would turn off after a minute.
3) I tried using the GPIO pins on the green expansion header as inputs. One button press is detected (the pin goes from HIGH to LOW) - but then it stays low. Even after I release the (momentary) pushbutton.
This has been driving me crazy form 3 days. I even did a clean install of Raspbian to exclude the mucked-about OS as a problem source. Still, the problems persist. I would like some advice...
Any thoughts?
Peter
1) I tried connecting a pushbutton between CE1 (on the SPI header) and GND, with the internal pull-up resistor enabled. When the button is not pressed, CE1 is at 5V (as it should be). When I press the button, it pulls CE1 down to ground (as it should). HOWEVER, it does not pull pin 26 down from 3V3 to GND, even though that is the same pin (only at opposite ends of the logic level converter).
2) I tried the blink.py example from your wiki page with GPIO4 on the green GPIO expansion header. I used the exact same program, yet it does not blink the LED connected on GPIO4. (Yes, correct polarity.) It turns it on, and it stays on. Sometimes it would turn off after a minute.
3) I tried using the GPIO pins on the green expansion header as inputs. One button press is detected (the pin goes from HIGH to LOW) - but then it stays low. Even after I release the (momentary) pushbutton.
This has been driving me crazy form 3 days. I even did a clean install of Raspbian to exclude the mucked-about OS as a problem source. Still, the problems persist. I would like some advice...
Any thoughts?
Peter
2017-07-31 05:50:15 Did you ever find a solution or figuring out what is going on? I'm having similar issues with my shield. kia2882
kia2882 2016-09-02 02:07:41 Hi Peter,
Sorry for my late reply.
Did you try to connect your LED to the other GPIO header? And the result is same? Or can you use the voltage meter to measure the GPIO header of the shield and the controller separately to look at the voltage to make sure if the GPIO is good? Wendy.Hu
Sorry for my late reply.
Did you try to connect your LED to the other GPIO header? And the result is same? Or can you use the voltage meter to measure the GPIO header of the shield and the controller separately to look at the voltage to make sure if the GPIO is good?
Wendy.Hu 