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  1. Martaine2005

    Drill bits for homemade PCBs?

    That made me chuckle Hop. Are you talking US customs? Or in the front pocket during turbulence? I use miniature diamond files for tiny drill bits and any router bits with tight flutes. Jewellers tools. And straight diamond stones for normal cutting edges. Even slightly damp timber can burn, a...
  2. Martaine2005

    Need Help w/ Custom Portable Speaker Schematic

    Good advice from Bob. Read the review too. You can always leave out the sub. You can always add a bluetooth module too. Martin
  3. Martaine2005

    Need Help w/ Custom Portable Speaker Schematic

    Is this of any use to you? It's made from readily available modules. Martin
  4. Martaine2005

    Adding LED lights to Kid Battery powerd Ride-on

    I would have thought the switch would re-activate the timer. But I have never used one to be sure. That centre pot seems to be a battery charge indicator. The unit also charges batteries too. Martin
  5. Martaine2005

    Drill bits for homemade PCBs?

    Yes, I stand corrected! Having read many websites, carbide bits seem to be the norm. However, if there is any defence, I am very finicky and do not let any of my cutting tools dull. They are all kept sharp and clean. So I probably would never have noticed. When I was carpet fitting, even the...
  6. Martaine2005

    Drill bits for homemade PCBs?

  7. Martaine2005

    Drill bits for homemade PCBs?

    Before I answer , ordinary HSS drill bits? Hop you are being a little zealous
  8. Martaine2005

    Drill bits for homemade PCBs?

    Blimey. I sounded a little like Colin there...
  9. Martaine2005

    Drill bits for homemade PCBs?

    Just hold a small drill steady and don't rock it. Any drill will do. So wil the bit., All this nonsense about drill bits and what ever. Just get on with it and post your results. Martin
  10. Martaine2005

    Transistor Mosfet pairs to drive LED cube layers

    Russel, that's a very nice thing to say. Thank you. I am a new comer to this forum and feel like he is still around. I have read all of the 'past' messages. He was truly a loved and an asset to the forum, and his family. I know I have friend on the forum who misses him too. You are not alone...
  11. Martaine2005

    Drill bits for homemade PCBs?

    You of all people should understand Steve. Whack a blunt chisel into wood turning. It will burn. Whack a sharp chisel in and it will destroy your master piece if you are not careful. Martin
  12. Martaine2005

    Drill bits for homemade PCBs?

    Ouch, that was a little un-called for. I am not teaching any body. Never force a bit faster than it can cut. Standard practice. Martin
  13. Martaine2005

    Drill bits for homemade PCBs?

    I beg to differ with you. My set of HSS bits have been around the houses for many years. If you use them for plastics or pcb, fibreglass etc, they will blunt if the speed is too high.(RPM) I was giving Dan a place to start. And to start slowly, let the drill bit do the work. Drilling a hole in...
  14. Martaine2005

    Adding LED lights to Kid Battery powerd Ride-on

    Thanks Alec. Let me try that. I'll send you a file to see if mine is working the same as yours. EDIT: I managed to import your 'fuse' the wire jumper. Martin
  15. Martaine2005

    Not enough current to trigger relay.

    I must have missed that bit. Martin
  16. Martaine2005

    Drill bits for homemade PCBs?

    Oops, depends a little on that too. But taken slowly, even a bent drill bit will still drill a bigger hole!! Martin
  17. Martaine2005

    Adding LED lights to Kid Battery powerd Ride-on

    Yes, or the connector that is already on one of the regulators. You may be able to get two wires in the same connector to link 'daisy chain' to the other regulator. You can use a timer like that too. But if your son is happily playing, do you really want " Dad lights gone off" every 10 or 15...
  18. Martaine2005

    Drill bits for homemade PCBs?

    Hi Dan, It wont be the bits or the press. It will be how fast you try and drill the hole. These tiny 1mm to 4mm bits really need to be drilled slowly, no pressure and let the bit do the work. Have a practice while drilling some off-cuts. This applies to drilling anything with tiny drill bits...
  19. Martaine2005

    Not enough current to trigger relay.

    Hey COffin, Don't give up so quickly. This may be a lot simpler than you think. You may be able to connect a sound bomb directly to the phones ringer. Here in the UK, the land line has 75vac when the phone is ringing and only about 4 to 7vac when not. What phone is it? Model number? EDIT: Your...
  20. Martaine2005

    Adding LED lights to Kid Battery powerd Ride-on

    Nice one Alec, I am still updating LTSpice. Only 9.5mb to go. I couldn't find switches or regulators or even plain boxes for me to label. Martin
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