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 […]
LTE 4G SMS notes
Send AT commands Ask Question Asked today Viewed 8 times 0 I have purchased this 4G HAT and I’m using it with this module in a raspberry 4. I use the USB connection. I installed a ppp connection […]
Rpi4B PSU MxL7704 Power Supply Chip Notes
Rpi4B power connector SMD components damaged. How to replace it? Ask Question Asked 5 months ago Active 4 months ago Viewed 358 times 4 I broke what looks to be either a diode, capacitor or […]
nRF24 Chat Record
Then we need to read the command set to know how to load a message, how to send, how to receive etc etc. It is indeed very messy. Bed time. So I […]
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 […]
Rpi4B J2 problem
Why doesn’t the RPi 4 power on when RUN pin is grounded? Ask Question Asked 7 months ago Active 4 months ago Viewed 3k times 3 I’m trying to power on a RPi 4 using […]
Rpi4 psu smd components
Rpi4B power connector SMD components damaged. How to replace it? Ask Question Asked 5 months ago Active 4 months ago Viewed 343 times 4 I broke what looks to be either a diode, capacitor or […]
rpi3 4 components
Identifying each component on raspberry-pi3B+ Ask Question Asked today Active today Viewed 12 times 1 Can anyone help me to identify each and every component on pi, like where is wifi chip, which one is […]
WaveShare RS485 CAN module note
Waveshare RS485 CAN hat over raspberry pi 3A+ Ask Question Asked today Viewed 13 times 1 So I have been at least trying to connect to the hat from the Pi, the following is […]
