Search found 5 matches

by chulian
Thu 2022-02-10 11:58
Forum: DSP and Audio Software
Topic: DC Power supply
Replies: 0
Views: 228

DC Power supply

Setting up a base radio and amp. I'm looking at DC power supplies( https://www.apogeeweb.net/electron/the-best-guide-to-dc-power-supply.html ) like Powermax 100 amp. Question is, is the cooling fan too loud? Second question, what power supply would you all recommend? I have a couple of fairly high-p...
by chulian
Fri 2022-01-07 10:45
Forum: System Software
Topic: Calculating Values for PN2222A LED Circuit
Replies: 1
Views: 278

Calculating Values for PN2222A LED Circuit

I'm gonna be adding an IR LED to my Arduino Uno and I'm trying to wrap my head around the math used to figure out the exact resistor values needed to use a PN2222A( https://www.kynix.com/components/PN2222A-Bipolar-Transistors-CAD-Models-Datasheet-Features.html ) transistor to drive the LED. I know m...
by chulian
Mon 2021-12-06 8:26
Forum: System Software
Topic: STM32F407VET6 programming options
Replies: 0
Views: 348

STM32F407VET6 programming options

Hi everyone, I purchased a STM32F407VET6( https://www.kynix.com/components/STM32F407VET6-Microcontrollers-CAD-Models-Datasheet-Features.html ) (Black) board based on the recommendations of the wiki and have done a large amount of reading and trial and error. I have been unable to get this board work...
by chulian
Mon 2021-11-08 4:51
Forum: Microcontroller Software
Topic: Standard bliniking program not working? STM8S103F3P6
Replies: 1
Views: 597

Standard bliniking program not working? STM8S103F3P6

Hello, everyone! I am trying to get a standard linking led program running on my STM8S103F3P6 development board but I am not sure what I am doing wrong. I connected a LED to PIN D3, this is my code: #include <stm8s. h> void delay_ ms (uint16. _t ms) ; void delay_ _ms(uint16 _t ms) { while (ms- -) { ...
by chulian
Mon 2017-04-17 8:08
Forum: VS1005 and VSOS Software
Topic: creating mp3 device playing sound in specific time
Replies: 5
Views: 2734

creating mp3 device playing sound in specific time

I need help with creating device that will be able to play sound (can be recorded or from mp3/wav...) at certain time, for example at 8:00PM, 8:15PM; 8:30PM ...until 5:00AM. Device must be powered from battery and must be working for more than 2-3 months. Sound is about max 10 seconds and it should ...