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Here is the pictures of the otherside of the board.

Hi I did use another cable to test it, without success. Also this cable was able to program another teensy.

It does say that VREGIN was to be connected: http://www.appfruits.com/2015/03/building-your-own-custom-teensy/

Thanks for reply. The MKL02 is on the other side of the board. Will get and I probed it and it did show activity. Shall provide some photos of the bottom side tomorrow.

still trying to figure out what I have done wrong. Paul, any ideas.

I am not sure what I am doing wrong. The board is not being recognised by the PC. The bluetooth module does show up on my phone. I did probe it with for activity, it does appear to have all the activity described on this site: http://www.appfruits.com/2015/03/building-your-own-custom-teensy/...

Yes Paul. I tested it with Teensy 3.1, teensy Audio board and the RN52 audio Bluetooth breakout board in this configuration. Strange thing was that, the setup appeared to be more stable when the RN52 microphone negative pin was left unconnected. Same for the Speak Pin. The picture below is mad...

Great! Regarding C11, it is connected to the microphone line on the RN52 and C13 is connected to the left speaker line of the RN52. This may appear counter-intuitive. The speaker line (SPK_L+) from RN52 is acting like a microphone/LINEIN_L to the SGTL5000, hence the C13. While the SGTL5000...

Thanks Paul. Here is the Link. http://vionics.co.uk/pdf/BluetoothHeadset5-01-12-205.pdf

I have modified the schematic. Anyone find anything that could cause some issues with this custom teensy 3.2 board? Please post it so I and other would know.

Wow, that was great. I just spotted that teensy Audio Pin5 issue. Missed the Resistor ones and different caps values. Thanks a lot.

Thanks for your reply:D . I know its a lot to ask. I can pay for the service, if there was a way:cool:. Makes sense to seek help here first since most users are familiar with the teensy and even the teensy audio board. Will try and do as you suggested. thanks

Someone please help out. You can just verify one pin at a time. Others can verify the other pins. Paul I know you are busy, do not want to get it wrong this time. If there was a way to pay for the service, I would pay for it.

I would greatly appreciate any help with this schematic. Just want to make sure the connections are correct. I am a bit jaded from looking at it too long. The board is based on a teensy 3.2 and Audio board. Also added a Lipo charging circuit. I would like these connections checked for...

I take your point. The issue is that it costs quite a heap when assembly fails due to issues with the board design. The engineer that designed the board had years of experience and the assembled board did not work. Hence why I am being cautious. About having Paul review our board design, I...

Great! just ordered 25. I know there is a teensy 3.1 Eagle library, however, I am not very good at using eagle and the library is a requires more steps to modify. It would be very helpful if there is a teensy 3.2 board Eagle file like this; https://github.com/appfruits/Custom-Teensy. Paul...

Thanks for your prompt answer. You have accomplished something really great with the Teensy 3 and above, nothing appears to come close of similar size. We designed a custom PCB based on the teensy 3.1 and the Teensy audio board. The audio board was needed because Teensy audio library does not...

Hi, got 4 of the teensy 3.2. has a friendlier feel to it. Think it may have something to do with the button. Paul, is the Minitan bootlader compatible with the new teensy 3.2? I mean since the new boot-loader is not ready for shipping yet.

I agree. Hope the issue is sorted. About 'It can also work together with the ADC input, for a total of 3 possible inputs'; Do you know how to use the ADC library accept audio signal using one of the ADC_1 pin and output it to pwm pin 3?

Hi Thanks for the reply. I tried that out and got a code similar to the File > Examples > Audio >HardwareTesting>PassThroughMono file : #include <Audio.h> #include <Wire.h> #include <SPI.h> #include <SD.h> // GUItool: begin automatically generated code AudioInputAnalog adc1...

Thanks, greatly appreciate your pointers. Both approaches sound quite attractive. Will explore both options. Shall report back how it turns out. May figure this out soon, however I have gone through the audio library output_dac,output_pwm files, still have not figured out where it designated...

Please, I need some assistance!

The line of code: r = incomingAudio % 10;, give the remainder of the calculation of incomingAudio/10. to obtain the original value, the reverse is done: reverse = reverse* 10 + r;

I am looking to have Teensy 3.1 encrypt microphone/voice input, using a simple algorithm: incoming = voiceData; while(incomingAudio) { r = incomingAudio % 10; reverse = reverse* 10 + r; // used to reverse the encryption; incomingAudio=incomingAudio/10; } #include <Audio.h> #include...