No, I have the pin going to an IRLZ44N <http://www.irf.com/product-info/datasheets/data/irlz44n.pdf> Mosfet and the mosfet controls the 9 volt source for the transducer <https://www.sparkfun.com/products/10917>. and I have done this before and works fine.
*BUT!!* Since you mentioned the electronics, I went and took off the board that I milled and re-wired with a proto board and IT WORKS!!! As I write this I'm working on it and my problem was that I'm using the 9volt battery to power the IOIO and the transducer, so I just added a random resistor between the 9V and the transducer/mosfet and it works, so I'm guessing that too much current was going to the transducer and away from the IOIO so the connection was being dropped. (you can probably tell that I know squat about electronics, but I'm learning) So now I just need to figure out the value of the resistor to add and I should be done. thanks for the tiny push in the right direction. Santiago On Fri, Aug 22, 2014 at 7:50 PM, Ytai Ben-Tsvi <[email protected]> wrote: > Any chance you connected a vibrator motor directly to the pin??? > > > On Fri, Aug 22, 2014 at 2:21 PM, Santiago Alfaro <[email protected]> > wrote: > >> Hello all >> >> I have an app that takes data from a sensor in the mobile device and uses >> the IOIO to transform the numeric value into the frequency of a transducer >> by turning an output pin on and off and controlling the transducer with a >> FET. >> >> I have successfully done this in other apps but something is different >> now. My problem is that when I run: >> >> *...* >> >> >> >> int vibPin = 40; >> >> *...* >> >> >> led_ = ioio_.openDigitalOutput(IOIO.LED_PIN); >> >> out = ioio_.openDigitalOutput(vibPin); >> >> *...* >> >> >> while (true) { >> >> >> * //out.write(false);* >> >> led_.write(false); >> >> Thread.sleep((long) 100); >> >> * //out.write(true);* >> >> led_.write(true); >> >> Thread.sleep((long) _incomingValue); >> >> Log.d(TAG, "Sensor Value " + _incomingValue); >> >> } >> >> >> with the "out" pin commented out, everything works and LogCat shows the >> Sensor Value indefinitely. But if I uncomment the out pin, the app will run >> for a bit but then IOIO will disconnect and re-connect. Log cat will show >> this: >> >> 08-22 17:13:28.351: I/IOIOImpl(20170): IOIO connection established >> >> 08-22 17:13:28.356: D/IOIOConnectionVibThread(20170): Thread >> [Thread-78589] is running. >> >> 08-22 17:13:28.961: D/IOIOConnectionVibThread(20170): Sensor Value 485.0 >> >> 08-22 17:13:29.591: D/IOIOConnectionVibThread(20170): Sensor Value 485.0 >> >> 08-22 17:13:30.221: D/IOIOConnectionVibThread(20170): Sensor Value 485.0 >> >> 08-22 17:13:30.851: D/IOIOConnectionVibThread(20170): Sensor Value 485.0 >> >> 08-22 17:13:31.476: D/IOIOConnectionVibThread(20170): Sensor Value 485.0 >> >> 08-22 17:13:32.096: D/IOIOConnectionVibThread(20170): Sensor Value 485.0 >> >> 08-22 17:13:32.721: D/IOIOConnectionVibThread(20170): Sensor Value 485.0 >> >> 08-22 17:13:33.351: D/IOIOConnectionVibThread(20170): Sensor Value 485.0 >> >> 08-22 17:13:33.466: I/IOIOProtocol(20170): IOIO disconnected >> >> 08-22 17:13:33.486: D/IOIOImpl(20170): Physical disconnect. >> >> 08-22 17:13:33.486: V/BluetoothIOIOConnection(20170): Client initiated >> disconnect >> >> 08-22 17:13:33.496: E/IOIOConnectionVibThread(20170): >> ConnectionLostException >> >> 08-22 17:13:33.496: E/IOIOConnectionVibThread(20170): >> ioio.lib.api.exception.ConnectionLostException: java.io.IOException: Broken >> pipe >> >> 08-22 17:13:33.496: E/IOIOConnectionVibThread(20170): at >> ioio.lib.impl.DigitalOutputImpl.write(DigitalOutputImpl.java:53) >> >> 08-22 17:13:33.496: E/IOIOConnectionVibThread(20170): at >> mit.edu.obmg.cellsensors.IOIOConnection$Vibration.run(IOIOConnection.java:170) >> >> 08-22 17:13:33.496: E/IOIOConnectionVibThread(20170): Caused by: >> java.io.IOException: Broken pipe >> >> 08-22 17:13:33.496: E/IOIOConnectionVibThread(20170): at >> android.net.LocalSocketImpl.writeba_native(Native Method) >> >> 08-22 17:13:33.496: E/IOIOConnectionVibThread(20170): at >> android.net.LocalSocketImpl.access$600(LocalSocketImpl.java:33) >> >> 08-22 17:13:33.496: E/IOIOConnectionVibThread(20170): at >> android.net.LocalSocketImpl$SocketOutputStream.write(LocalSocketImpl.java:132) >> >> 08-22 17:13:33.496: E/IOIOConnectionVibThread(20170): at >> android.bluetooth.BluetoothSocket.write(BluetoothSocket.java:482) >> >> 08-22 17:13:33.496: E/IOIOConnectionVibThread(20170): at >> android.bluetooth.BluetoothOutputStream.write(BluetoothOutputStream.java:85) >> >> 08-22 17:13:33.496: E/IOIOConnectionVibThread(20170): at >> java.io.BufferedOutputStream.flushInternal(BufferedOutputStream.java:185) >> >> 08-22 17:13:33.496: E/IOIOConnectionVibThread(20170): at >> java.io.BufferedOutputStream.flush(BufferedOutputStream.java:85) >> >> 08-22 17:13:33.496: E/IOIOConnectionVibThread(20170): at >> ioio.lib.impl.IOIOProtocol.endBatch(IOIOProtocol.java:186) >> >> 08-22 17:13:33.496: E/IOIOConnectionVibThread(20170): at >> ioio.lib.impl.IOIOProtocol.setDigitalOutLevel(IOIOProtocol.java:245) >> >> 08-22 17:13:33.496: E/IOIOConnectionVibThread(20170): at >> ioio.lib.impl.DigitalOutputImpl.write(DigitalOutputImpl.java:50) >> >> 08-22 17:13:33.496: E/IOIOConnectionVibThread(20170): ... 1 more >> >> 08-22 17:15:53.466: I/IOIOConnection(20170): All workers dead >> >> 08-22 17:15:53.476: D/IOIOImpl(20170): Waiting for IOIO connection >> >> 08-22 17:15:53.476: V/IOIOImpl(20170): Waiting for underlying connection >> >> 08-22 17:15:53.506: V/BluetoothIOIOConnection(20170): Attempting to >> connect to Bluetooth device: IOIO (08:30) >> >> 08-22 17:15:53.511: D/BluetoothUtils(20170): >> isSocketAllowedBySecurityPolicy start : device null >> >> 08-22 17:15:53.511: D/BluetoothUtils(20170): >> isSocketAllowedBySecurityPolicy start : device null >> >> 08-22 17:15:53.511: D/BluetoothUtils(20170): >> isSocketAllowedBySecurityPolicy start : device null >> >> 08-22 17:15:53.511: W/BluetoothAdapter(20170): getBluetoothService() >> called with no BluetoothManagerCallback >> >> 08-22 17:15:53.526: D/BluetoothSocket(20170): connect(), SocketState: >> INIT, mPfd: {ParcelFileDescriptor: FileDescriptor[109]} >> >> 08-22 17:15:58.221: V/BluetoothIOIOConnection(20170): Established >> connection to device IOIO (08:30) address: 00:1F:81:00:08:30 >> >> 08-22 17:15:58.221: V/IOIOImpl(20170): Waiting for handshake >> >> 08-22 17:15:58.226: I/IncomingState(20170): IOIO Connection established. >> Hardware ID: SPRK0020 Bootloader ID: IOIO0400 Firmware ID: IOIO0500 >> >> 08-22 17:15:58.226: V/IOIOImpl(20170): Querying for required interface ID >> >> 08-22 17:15:58.236: V/IOIOImpl(20170): Required interface ID is supported >> >> 08-22 17:15:58.236: I/IOIOImpl(20170): IOIO connection established >> >> >> The app uses fragments to control each different sensor present in the >> device and uses IOIO as a service. Inside the IOIO service I start a >> "Vibration Thread" so that I can control the frequency of the vibPin in a >> loop. >> >> I have no idea what is going on or how to fix it. >> >> Thanks, >> Santiago >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "ioio-users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> >> To post to this group, send email to [email protected]. >> Visit this group at http://groups.google.com/group/ioio-users. >> For more options, visit https://groups.google.com/d/optout. >> > > -- > You received this message because you are subscribed to a topic in the > Google Groups "ioio-users" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/ioio-users/XESZo5Wy4bQ/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/ioio-users. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "ioio-users" group. 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