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davidl

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About davidl

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  1. davidl

    LoMA:Replace by 12C67X?

    Thank's for all Mr RC-CAM
  2. davidl

    LoMA:Replace by 12C67X?

    Hello ! I would like to understand. When the MAX8211 is inactive (U OK) the outpout of max8211 (pin 4) is high (5V) or the outpout N Channel is Blocked ? The pic12C508 work good ? The condenser C2 is present to do delay ? The GND is connected to the potentiometer R5, is it not a mistake ? If you have some time, thank's to explain me... Davidl
  3. davidl

    LoMA:Replace by 12C67X?

    HELLO ! for a boy who say "I do not have time to develop alternate layouts" I just reply : "Thank's very much Mr RC-CAM ! it's too much!!!" I buy components today and i think i must do a pcb. When it's finished and tested, i will post the picture layout and photo ! I promise ! Davidl
  4. davidl

    LoMA:Replace by 12C67X?

    Hello ! the voltage trip point need to be adjustble. 4 accus =>4*1.2-0.2=4,6v 5 accus =>5*1.2-0.2=5,8v 2lipo =>2*3.6-0.6=6,6V 3lipo =>3*3.6-0.6=10,2V X accus =>X * U nominal-DeltaU=U Alarm DeltaU=U nominal(1accus)-U empty(1accus) It's my formule... For beginning the U alarm = 4,6V. Thank's for you help. Davidl
  5. davidl

    LoMA:Replace by 12C67X?

    Hugh ! Ok ! Thank's for all. I search to "switch/clamp/interrupt" the R/C servo signal when low battery voltage detected. If any body can help me ... DavidL
  6. davidl

    LoMA:Replace by 12C67X?

    OK, They can't use one of the outpout buzzer for drive the transistor ? are the three outpout needed to drive the buzzer ?(3*20ma=60ma!) I can't get one in input... I don't see the solution for my low voltage alarm... thank's DavidL
  7. davidl

    LoMA:Replace by 12C67X?

    Hello Is it possible, Mr RC-CAM to use the not use PIN3 in Input ? For example 0V=do nothing 5V=force buzzer ON I would use this pin for add the low voltage alarm. By advance thank's. DavidL
  8. davidl

    LoMA:Replace by 12C67X?

    OK thank's for the link and explanation of the 'F' and 'C' family PIC DavidL
  9. davidl

    LoMA:Replace by 12C67X?

    Hugh ! I must cut the RX signal if i want the alert buffer ! How many component ? a icl8211 ? Do you have some idea of schematic ? Thank's DavidL
  10. davidl

    LoMA:Replace by 12C67X?

    OK THANK'S for reponse Mr Kilrah, i don't inderstand you about "flash pic" I found this link about the low voltage detection with PIC : http://homepages.paradise.net.nz/bhabbott/lvw.html http://pierre.rondel.free.fr/locatair.htm Best regards DavidL
  11. davidl

    LoMA:Replace by 12C67X?

    Hugh ! Thank's for your projet. I do sailplane in France by Mistral (a wind >50 km/h), with my friends, and we plane a very long time (1 or 2 hours). It is possible to replace the 12C50X by 12C67X (4 Analog) because i would know the low batery voltage detection by the piezo (for example). by advance, thank's and excuse for my english... Davidl
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