===== PB401 VC Echo ===== PB401 VC Echo is the echo and delay module for the [[paper_bits:paper_bits_main|Paper-Bits]]\\ It isbased on the digital delay chip [[http://www.princeton.com.tw/Portals/0/Product/PT2399_1.pdf|PT2399]]. The amount of echo could be changed with a potientiometer. The length of the delay could be adjusted with a 5V control voltage (0 to 5V) optional with a potientiometer, too. This could be set with a jumper. \\ The board was developed by Wolfgang Spahn in 2017. With the friendly support of his intern at that time [[http://ioanavrememoser.com| Ioana Vreme Moser]].\\ {{ :paper_bits:sideviewmic.jpg?|}} ---- ===== Hardware ===== {{:paper_bits:echo.jpg?300|}} {{:paper_bits:echoback.jpg?300|}} ---- ==== Schematic ==== {{ :paper_bits:schematicfull.jpg |}} ==== Paper-PCB ==== {{:paper_bits:pb401_vc_echo_22.jpg?600|}} {{ :paper_bits:pb401_vc_echo_22.ai.zip|}}\\ ---- ==== Parts ==== * **Resistors:** * 1x 1 kOhm * 1x 4,7 kOhm * 1x 5,6 kOhm * 5x 10 kOhm * 2x 15 kOhm * 1x 18 kOhm * 1x 20 kOhm * 1x 100 kOhm * **Capacitors:** * 2x 560 pF (foil) * 1x 3300 pF (foil) * 1x 3900 pF (foil) * 1x 10 nF (foil) * 1x 39 nF (Foil) * 5x 100 nF (foil) * **Electrolytic Capacitors:** * 2x 4,7 µF * 1x 10 µF * 1x 47 µF * **Semiconductors:** * digital delay PT 2399 * optocoupler H11F1 * **Mechanical:** * 1x IC socket, 16 pin * 1x IC socket, 6 pin * 1x pin strip 1x9 * 2x pin header, female 90° 1x3, 1x2 * 2x pin header, male 90° 1x3, 1x2 * 3x jumpers * **Potentiometers:** * 1x 10k * 1x 50k ---- ==== License ==== The PB401 VC Echo was designed by **Wolfgang Spahn**, 2017-20.\\ It is licensed under a [[http://creativecommons.org/licenses/by-nc-sa/4.0/"|Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License]].

----