Month: February 2020

ADS1256 Programming Notes V0.3

6:12pm Wed. 2/26/2020 3:25pm Wed. 2/26/2020 ADS1256 ADC Programming Notes V0.4 penzu link: https://penzu.com/p/d0716f85 Contents (1) References (2) Appendices Appendix B – Harry Singh ADS1256 Programming Notes V0.3 Appendix A – ADXL345 Programming Notes V0.3 […]

Pi4 Bootloader Configuration

Pi4 Bootloader Configuration You can display the currently-active configuration using vcgencmd bootloader_config To change these bootloader configuration items, you need to extract the configuration segment, make changes, re-insert it, then reprogram the […]

Buzzer not working, back EMF etc

(1) https://www.raspberrypi.org/forums/viewtopic.php?f=91&t=224976&hilit=buzzer+tlfong01&start=50#p1402122, (2) https://www.raspberrypi.org/forums/viewtopic.php?f=91&t=224976&p=1407253&hilit=buzzer+tlfong01#p1407253, (3) https://raspberrypi.stackexchange.com/questions/97980/active-piezo-buzzer-makes-sound-on-both-rpi-gpio-low-and-high-level-signal, (4) https://raspberrypi.stackexchange.com/questions/104573/piezo-buzzer-driven-by-rpi-gpio-problem, (5) https://raspberrypi.stackexchange.com/questions/103868/piezo-sensor-to-pick-up-acoustic-instrument-signal-using-rpi-and-adc. Is it fine to power a buzzer that requires only 3V using the 3V3 pin of the Raspberry Pi 3 B+ Ask […]