caramoan tour package

caramoan tour package

Author Topic: Battery Indicator and Range Indicator  (Read 696 times)

Offline luibog

  • Size AAA Battery
  • ***
  • Posts: 52
  • Pogi/Ganda Points: 1
  • Gender: Male
Battery Indicator and Range Indicator
« on: March 01, 2011, 12:37:06 AM »
Ano kayang circuit ang pwede gawin battery indicator, kahit indi digital ung LED lng ok na pwde ba transistors? and sa Range indicator kc Remote between the device pano malalaman na kung ilan ung range nila inbetween. tnx

Philippine Electronics Forum

Battery Indicator and Range Indicator
« on: March 01, 2011, 12:37:06 AM »

Offline Macgyver

  • Diesel Generator
  • *
  • Posts: 1440
  • Pogi/Ganda Points: 70
    • MakerDude
Re: Battery Indicator and Range Indicator
« Reply #1 on: March 01, 2011, 08:12:48 AM »
battery indicator, pwede sigurong voltage divider (http://forums.trossenrobotics.com/tutorials/how-to-diy-128/cheap-battery-monitor-using-resistive-voltage-divider-3264/).

sa layo ng range,  trial and error para malaman mo range.  kailangan i test mo ng actual.  may way siguro to do it computationally pero mas mabilis kung i try mo na lang.
Become a Virtual Worker |  MakerDude.com Electronics Shop is now OPEN!

Philippine Electronics Forum

Re: Battery Indicator and Range Indicator
« Reply #1 on: March 01, 2011, 08:12:48 AM »

Offline luibog

  • Size AAA Battery
  • ***
  • Posts: 52
  • Pogi/Ganda Points: 1
  • Gender: Male
Re: Battery Indicator and Range Indicator
« Reply #2 on: March 01, 2011, 10:56:14 AM »
what do you mean by trial and error? pano ko sya gagawin in circuit? kc kahit sana digital signal between the receiver and transmitter may ma recieve ako para sa range nya kung gano na cla kalayo sa isatisa, kasi ang gamit ko ay UHF Data Transceiver ng e-gizmo then gusto ko sana mag lagay ng indicator pag lalagpas na sya sa 50meter or pag humihina na ung signal nya para ma sabihan ung user na wag na lumayo pa at baka maputol na ung connection.

tnx

Philippine Electronics Forum

Re: Battery Indicator and Range Indicator
« Reply #2 on: March 01, 2011, 10:56:14 AM »

Offline Macgyver

  • Diesel Generator
  • *
  • Posts: 1440
  • Pogi/Ganda Points: 70
    • MakerDude
Re: Battery Indicator and Range Indicator
« Reply #3 on: March 01, 2011, 12:06:37 PM »
ah, kala ko naman may existing kang device tapos gusto mo malaman kung ano range.

ang kailangan mo pala is indicator na mag-o-out of range na sya.  pag ganyan, no idea ako kung paano gagawin dyan.  kasi alam ko yung modules is ang output is just TX/RX na pwedeng iinterface sa microcontroller na.  So data na ang mareread more.
Become a Virtual Worker |  MakerDude.com Electronics Shop is now OPEN!

Philippine Electronics Forum

Re: Battery Indicator and Range Indicator
« Reply #3 on: March 01, 2011, 12:06:37 PM »

Offline rdpzycho

  • Technical People
  • Solar Power Satellite
  • *****
  • Posts: 10719
  • Pogi/Ganda Points: 630
  • Gender: Male
  • Respect Begets Respect
    • rdpzycho
Re: Battery Indicator and Range Indicator
« Reply #4 on: March 01, 2011, 12:45:52 PM »
what do you mean by trial and error? pano ko sya gagawin in circuit? kc kahit sana digital signal between the receiver and transmitter may ma recieve ako para sa range nya kung gano na cla kalayo sa isatisa, kasi ang gamit ko ay UHF Data Transceiver ng e-gizmo then gusto ko sana mag lagay ng indicator pag lalagpas na sya sa 50meter or pag humihina na ung signal nya para ma sabihan ung user na wag na lumayo pa at baka maputol na ung connection.

tnx

hindi 'yan kaya directly ng UHF transmitter.

the most accurate way to do this is by radar or sonar.

pero merong way to use the UHF transmitters, kailangan nga lang ng Tx at Rx sa bawat device. bale magpapadala 'yung isang device ng interrogation, then sasagot 'yung kabila ng reply. tapos ime-measure 'yung time difference between the Stop bit nung interrogation at nung Start bit nung reply. 'yung time nun, deduct 'yung latencies ng system, divide by 2, multiply by speed of light = distance between the 2.

sa 50m niyo, kailangan ma-detect niyo 'yung 333.33ns para malaman 'yung layo.

for further reading, check this:

http://en.wikipedia.org/wiki/Distance_measuring_equipment
‎"Divide each difficulty into as many parts as is feasible and necessary to resolve it."
- Rene Descartes

"For every difficult problem there is always a simple answer and most of them are wrong."
- Clayton Paul

Philippine Electronics Forum

Re: Battery Indicator and Range Indicator
« Reply #4 on: March 01, 2011, 12:45:52 PM »

 

Privacy Policy

Contact Us: elabph@yahoo.com