* - if you plug in the telephones´ USB cable into your computer, the telephone is mounted as a drive and you can acess the recordings
![audacity skips while recording audacity skips while recording](https://www.bluskysoftware.com/audacity/manual/m/images/4/4d/punch_and_roll_03.png)
* - Files are saved on SD card as 44.1kHz, 16-bit mono WAV audio files * - now uses a Teensy 4.1 with built-in SD card (faster via SDIO), if you want to use a Teensy 4.0, uncomment in the USER CONFIGURATION below * Modifications by Frank DD4WH, August 2022 * compile with option: "Serial + MTP Disk (Experimental)"" and with option "CPU speed: 150MHz" (this can save about 70% of battery power) * download the following library, unzip it and put it into your local Arduino folder (on my computer, the local Arduino folder is: "C:/Users/DD4WH/Documents/Arduino/libraries/"): * the sketch only works with the latest Teensyduino 1.57 version, so please update your Arduino IDE AND your Teensyduino to Arduino version 1.8.19 and the latest Teensyduino version 1.57 * Playback button allows all messages currently saved on SD card through earpiece * Then, recording starts, and continues until the handset is replaced. * When handset is lifted, a pre-recorded greeting message is played, followed by a tone. * with minor modifications on other similar hardware * Tested using a Teensy 4.0 with Teensy Audio Shield, although should work * Audio Guestbook, Copyright (c) 2022 Playful Technology It seems to me that it does not respond to putting the handset off.
![audacity skips while recording audacity skips while recording](https://hdkb.clemson.edu/phpkb/assets/img_5e5eb089bb7cd.png)
![audacity skips while recording audacity skips while recording](https://cdn.imgbin.com/12/23/6/imgbin-audacity-audio-editing-software-sound-recording-and-reproduction-lame-soft-opening-DF2VBWGYwLqStBeJiTvKwiDk4.jpg)
One error pops up during programming: C: \ User \ iJackService \ Documents \ Arduino \ libraries \ src \ MTP_Teensy.cpp: In member function "uint32_t MTP_class:: GetObjectInfo (MTP_class:: MTPContainers)":Īfter connecting the power, the phone sounds for recording after a while and nothing else happens.