Post by thread:ludipipo

On Sat, 27 Feb 1999, Andreas Nyholm wrote: > Hi... > I have problems programming my 16F84 with a ludipipo programmer. > Do anyone know what's wrong? > PTM: Yes, Ludipipo is wrong. It works OK, if your RS232 -port gives +/- 12.6 V. Which is not true in most of the computers. In both of my portables it is about +/- 8 V and in all my tabletops it is about 11.8 V. In these tabletops I can manage but not very well. Use JDM (I don't find the URL just now). I have made a card for that and it works FB. It is just as small: about 1'x1.3'. -------------------------------------------------------------------------- PTM, spam_OUTptmustaTakeThisOuTutu.fi, http://www.utu.fi/~ptmusta OH1HEK Lab.ins. (mikrotuki) ATK-keskus/Mat.Luon.Tdk OI7234 Lab.engineer (PC support) Computer Center Mail: Turun Yliopisto / Fysla, 20014 Turku Pt 02-3336669, FAX 02-3335632 (Pk 02-2387010, NMT 0400-555577) --------------------------------------------------------------------------

At 08:26 AM 3/1/99 +0200, you wrote: >On Sat, 27 Feb 1999, Andreas Nyholm wrote: > >> Hi... >> I have problems programming my 16F84 with a ludipipo programmer. >> Do anyone know what's wrong? >> >PTM: Yes, Ludipipo is wrong. >It works OK, if your RS232 -port gives +/- 12.6 V. Which is not true in >most of the computers. In both of my portables it is about +/- 8 V and in >all my tabletops it is about 11.8 V. In these tabletops I can manage but >not very well. My experience has not been consistent with these observations. I've had no trouble programming F84's using the Ludi design and the measured voltage on the my serial port is just below 10 Volts. It has also worked with my laptop. In fact, I've built 2 dozen Ludi's and all of the them have worked. I've tried them on over a dozen different computers and only found one that didn't work. The ones that did work included everything from my 486DX2 laptop (running Win95) to 75 MHz pentiums and 233 Mhz pentiums running Win95, to a 200 MHz Pentium Pro running Win98 to a 450 Mhz Pentium II running WinNT. All worked. It does matter a great deal which programming software you use though. John Hansen