Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Recent content by Veketti

  1. V

    [ARM] STM32 I/O port control register

    Hi, Quick guestion. Have I understood correctly that this: GPIOA -> BSRR = GPIO_Pin_9 Pulls pin PA9 high and GPIOA -> BRR = GPIO_Pin_9 Pulls pin PA9 low? Thank you in advance.
  2. V

    From pic to STM32

    Hi, So I bought STM32 discovery board L4S5I-IOT but I don't really need all the peripherals it has. However STM doesn't have plain board with just ST-Link and STM32L4S5 MCU. What are my options, as all the peripherals in this discovery board are useless to me? At least for now. I've found...
  3. V

    [SOLVED] Voltage detector issue

    Wohooo, that's it! So once again desoldered all of the diodes (I'm getting good at (de)soldering) and found out that even with 1% precision resistors had to choose 180kohm and 270kohm instead of 193 - 270 to get the 3.1V from 5.3V. Maybe some multi turn trimmer would have been perfect so that...
  4. V

    [SOLVED] Voltage detector issue

    You're right, I did not disconnect R6... But I quess it makes no differences to the end result as according to the STM1061 datasheet it needs pullup resistor..
  5. V

    [SOLVED] Voltage detector issue

    I replaced the 18kohm resistor with 1uf capacitor but that didn't unfortunately have any effect. U6 pulled at 4.5V. Added 100kohm resistor in parallel like in Dana's example and then U6 pulled at 4.9V.
  6. V

    [SOLVED] Voltage detector issue

    Hmm, ok so back to the voltage divider. If I were to change the series diodes to 160kohm resistor and grounding resistor 226kohm resistor, I'd get at 5.3V, 3.103V to the U6 pin 3. Would this work in that sense that would U6 be able to pull down out pin 1 and overcome 10kohm pulldown resistor...
  7. V

    [SOLVED] Voltage detector issue

    Darn. Not the first time to face the no current no resistance -issue. Last time it was with zeners not working due to no current. Hopefully next time I remember. So my noble quest for almost zero current consumption circuitry was flushed down the drain. I was able to reproduce that what you...
  8. V

    [SOLVED] Voltage detector issue

    Dear All, I used STM1061 IC with voltage treshold 3.1V with below shown circuitry to detect low voltage. I needed it to trigger when voltage was ~5.3V. This IC was only available up to 3.1V so I had to decide some circuitry to lower the voltage. One was using voltage divider, but as this is...
  9. V

    4-20mA current loop measurement protection

    Dear All, I’m wondering one design which uses 4-20mA current loop sensor which is supplied by battery powered unit stepped up by Recom RO-0524S 24V 1W step-up converter and in pcb 250ohm resistor to measure voltage across the loop by AD7992 12 bit ADC. According to the AD7992 datasheet its...
  10. V

    PCB layout advice

    Hi, I've always found that the PCB layout is at least for me the hardest part. So I'd like to hear what are your steps in successfull layout and smoothest trace routings? So far I've found the best approach to be, first draw the board edge, then place the connectors on sides, MCU on center and...
  11. V

    From pic to STM32

    Dear All, Recently I designed portable device which uses PIC 16F1847 microcontroller and just bought out of curiosity STM32 discovery IoT kit with low power STM32L4S5 mcu and some STM32L4S5ZIT6 MCU's. My question is that with how big of a effort would that code be ported to the STM as I'm very...
  12. V

    [General] ADC value, filter out noise

    Dear All, What might be the professional way of filtering out noise from ADC readout in code? I was thinking of taking say, two samples then averaging them. Then when having two averaged values substract them and see if the remainder is less than measured noise, do not update the value to for...
  13. V

    [SOLVED] PIC16F1847 Timer1

    Wohoo, timer2 just worked like a charm! So happy. Thank you everybody, Your help has been invaluable. Just a side note, would still like to hear from somebody who is familiar with that INTE/IOCE thing question in post #9..
  14. V

    [SOLVED] PIC16F1847 Timer1

    I was about to say I'd go back to the easy to use, tested and trued timer0, but after Susan's post I'll try Timer2 instead. Hope that solves the issue. One other thing confuses me and the datasheet didn't answer me. Do I need to declare INTE and IOCE both for RB0 to wake up from sleep? What...
  15. V

    [SOLVED] PIC16F1847 Timer1

    What I meant with no luck that it didn't show that "Test" in display which in main procedure is calling by " Lcd_Out(2,1,"Test "); ". However if I comment the T1CON in intialize -procedure it will show that "Test" in display. So I quess it never gets out of the initialize or is on forever loop...
See more

Part and Inventory Search

Back
Top