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I've just had delivery of my nice new display but I must be missing something or else it's dead. To try it out I connected it to my desktop and fed it with characters "CL" at 9600,N,8,1 over the comm port. This should have cleared the screen and it didn;t. The thing boots up, running through its...

I need a large LCD 7 seg (or text at least) serial interface. Min character height 20mm anyone know of one?

Forgive me if this is an old question, if it is perhaps someone can direct me to an answer... The question goes like this - once upon a time I used to program PICs using Assembler. This was a masochistic passtime but I was paid for it! The PICs were destined for automated test gear and had to be...

Do the magic numbers that follow the 'calibfreq' command relate to anything? Are they, for example, a percentage change or ppm or a number of clock cycles at the given frequency. Given that I want to change the clock on my project by 1% knowing what the numbers mean would be useful. I've checked...

I've been using LM35 sensors into the ADC but despite all the recommended filtering and screened leads they remain very flaky in an electrically noisy environment like my boat's engine compartment. So bad are they that I've converted to NTC thermistors in frustration but their non-linearity is...

Hippy - thanks for replying to my last query about the 28X2 pin 6 as digital input. Can I achieve the same thing then by this spoof? SerRxd [1,lowbit],#b0 if b0 > 0 then goto highbit lowbit: ... the pin will have either 5 volts (the normal case unfortunately) or 0 volts. If it has zero the...

I'm replacing a PIC 16F873 with the 28X2 (I no longer have the masochistic desire to program in either assembler or C!). I find to my delight that the 28X2 has faster oscillators built-in than the old PIC's external oscillator (a 2.4576 xtal). Unfortunately, until the PicAxe is proven I'm not...

Okay, a lot of this has been gone through so forgive me but let me see if I've got this right. I want to use the Serial In pin (leg 6) on the 28X2 as a digital (binary) input. To do this I have to: (1) issue a 'disconnect' early in the program (2) ensure the pin is LOW before the disconnect is...