Uploaded February 2021 | Updated September 2026, 2 weeks ago
PCBWay Supports High Precision Advanced PCBs: pcbway.com
0:00 Intro
0:31 Observe piezo raw signal
1:48 Begin signal conditioning
2:24 Rectify signal
2:59 Peak detector
5:00 Clamp voltage
5:48 Schematic Design
8:58 Ordering PCBs from pcbway.com
9:26 PCB hook up to Teensy 4.1 and Adafruit I2S audio board
10:09 Sketch overview
11:57 Trigger input detection algorithm
13:36 Drum Demo
When piezo transducers are mechanically struck, they generate voltage spikes that can vary in voltage level, polarity, and active duration. The voltages can be a few volts or many tens of volts.
This pcb provides an interface between piezo elements and a microcontroller input (analog or digital). It limits the voltages to safe levels, filters them, and provides a more consistent level-sensitive output as the device is struck with varying intensity.
This pcb provides a 4 channel signal conditioner, allowing piezo elements to be used in a drum sample player on Teensy 4.1
Sketch, schematic and wiring diagram:
github.com/GadgetReboot/Piezo_Interface
Bare PCBs available at pcbway.com (I may receive a commission if ordered): pcbway.com/project/shareproject/Piezo_Drum_Trigger_Signal_Conditioner_Interface__4_ch_.html
Teensy Audio Design Tool Gui:
pjrc.com/teensy/gui
Piezo transducer datasheet example:
murata.com/~/media/webrenewal/support/library/catalog/products/sound/p37e.ashx?la=en-us
Digital audio latency timing considerations in hearing perception:
https://ask.audio/articles/monitoring-latency-how-low-can-you-go
Equipment I regularly use (support the channel by shopping through these affiliate links - I may earn a small commission and it doesn't cost you extra):
Mustool MT315 Digital Microscope banggood.com/custlink/KKvhiw1F6F
946C Solder Hot Plate 200mm x 200mm banggood.com/custlink/K3DyiNZy0l
ANENG AN8008 True RMS Multimeter banggood.com/custlink/KKDh9267Fz
Minleaf NPS3010W Power Supply banggood.com/custlink/KKKdtaNN9A
FY6900 Dual Channel 60MHZ Signal Generator banggood.com/custlink/vGKR9r6RkR
Siglent SDS1104X-E 100Mhz Digital Oscilloscope 4 Channels Standard decoder
Amazon.com: amzn.to/36fH1ui
Amazon.ca: amzn.to/36fNWUc
Support me on Patreon: patreon.com/gadgetreboot
LBRY/Odysee: odysee.com/@GadgetReboot:4
#ElectronicsCreators
PCBWay Supports High Precision Advanced PCBs: pcbway.com
0:00 Intro
0:31 Observe piezo raw signal
1:48 Begin signal conditioning
2:24 Rectify signal
2:59 Peak detector
5:00 Clamp voltage
5:48 Schematic Design
8:58 Ordering PCBs from pcbway.com
9:26 PCB hook up to Teensy 4.1 and Adafruit I2S audio board
10:09 Sketch overview
11:57 Trigger input detection algorithm
13:36 Drum Demo
When piezo transducers are mechanically struck, they generate voltage spikes that can vary in voltage level, polarity, and active duration. The voltages can be a few volts or many tens of volts.
This pcb provides an interface between piezo elements and a microcontroller input (analog or digital). It limits the voltages to safe levels, filters them, and provides a more consistent level-sensitive output as the device is struck with varying intensity.
This pcb provides a 4 channel signal conditioner, allowing piezo elements to be used in a drum sample player on Teensy 4.1
Sketch, schematic and wiring diagram:
github.com/GadgetReboot/Piezo_Interface
Bare PCBs available at pcbway.com (I may receive a commission if ordered): pcbway.com/project/shareproject/Piezo_Drum_Trigger_Signal_Conditioner_Interface__4_ch_.html
Teensy Audio Design Tool Gui:
pjrc.com/teensy/gui
Piezo transducer datasheet example:
murata.com/~/media/webrenewal/support/library/catalog/products/sound/p37e.ashx?la=en-us
Digital audio latency timing considerations in hearing perception:
https://ask.audio/articles/monitoring-latency-how-low-can-you-go
Equipment I regularly use (support the channel by shopping through these affiliate links - I may earn a small commission and it doesn't cost you extra):
Mustool MT315 Digital Microscope banggood.com/custlink/KKvhiw1F6F
946C Solder Hot Plate 200mm x 200mm banggood.com/custlink/K3DyiNZy0l
ANENG AN8008 True RMS Multimeter banggood.com/custlink/KKDh9267Fz
Minleaf NPS3010W Power Supply banggood.com/custlink/KKKdtaNN9A
FY6900 Dual Channel 60MHZ Signal Generator banggood.com/custlink/vGKR9r6RkR
Siglent SDS1104X-E 100Mhz Digital Oscilloscope 4 Channels Standard decoder
Amazon.com: amzn.to/36fH1ui
Amazon.ca: amzn.to/36fNWUc
Support me on Patreon: patreon.com/gadgetreboot
LBRY/Odysee: odysee.com/@GadgetReboot:4
#ElectronicsCreators
