$20 LCR ESR Transistor checker project

[madires]

You could try following:

In display.c, function Display_Value() change

Code: [Select]

    if (Offset > 0)                     /* dot required */
to

Code: [Select]

    /* dot required or 4-digit value */
    if ((Offset > 0) || (Value >= 1000))

Edit: Will be an option in the next firmware version.

[Kim Christensen]

At first, I tried something similar to your solution madires. But found that some calls to Display_Value() returned unwanted results. One I remember was the self tests and corrections mV readouts being in volts.
So in the end, I wrote my code so it only changed the default behavior for certain calls to Display_Value(). I'm sure there's a more elegant way than my solution.

[madires]

The only value looking a bit strange should be T6 (Rh+) in the self test. It's near Vcc, e.g. 4990. 4990 would become 4.980k (because it's just a plain number).

@all: Please tell me if you encounter other strange values when testing the modification for 4-digit values!

[edgard22]

Thanks, I haven't tested it thoroughly but everything seems to be ok.

Gracias, no he probado a fondo pero parece estar todo ok.

[Feliciano]

The only value looking a bit strange should be T6 (Rh+) in the self test. It's near Vcc, e.g. 4990. 4990 would become 4.980k (because it's just a plain number).

@all: Please tell me if you encounter other strange values when testing the modification for 4-digit values!

For normal and ESR capacitor measurements, the new dot option works for me.
Indeed the more noticeable "strange" results are in the SelfTest: I don't mind T1 showing 1.1xxV, but T6 showing 4.9xxK(mV) can be confusing. I think that part would require a little adjustment too