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Arduino based component tester

 

Just saw this on YouTube, a smple Arduino based component tester.?
?
There is a link to a website with schematic, BOM and Code.
Code is probably the basis for some of the ones available on ebay for around $15.
But, if you have the parts around it would be an interesting project .
--
DuWayne,? KV4QB
 

You are a few years late to the party ;)

Awesome little devices and quite useful, even better when modded and overclocked.


On Sat, 7 Nov 2020 at 01:29, DuWayne Schmidlkofer <duwayne@...> wrote:
Just saw this on YouTube, a smple Arduino based component tester.?
?
There is a link to a website with schematic, BOM and Code.
Code is probably the basis for some of the ones available on ebay for around $15.
But, if you have the parts around it would be an interesting project .
--
DuWayne,? KV4QB

 

On Fri, Nov 6, 2020 at 04:29 PM, DuWayne Schmidlkofer wrote:
Just saw this on YouTube, a smple Arduino based component tester.?
I was late to the party, also. Discovered these about a year ago.

I have two that seem to work well. The first one is a circuit board with a thin glass monochrome LCD green backlit graphic display. Powered by a 9V battery.

The second one I bought is in a tan colored box with a color TFT LCD display. This one has a rechargeable battery and a voltage boost that lets you test the breakdown voltage of Zener diode. Also can decode the IR pulses from remote controls.

I think I paid less than $10 for the first and around $18 for the second. The second one was on sale on Banggood. The first one was likely bought on eBay. Was a while back so prices may have changed.

It is truly amazing these things work as well as they do, by just wiggling the current through two different resistor values on each of three pins. And the software is clever enough to do this with the components in any configuration connected to the three pins.

Tom, wb6b
 

On Fri, Nov 6, 2020 at 08:53 PM, Dragan Milivojevic wrote:
even better when modded and overclocked

What do you gain by overclocking it?

Thanks, ? ? ? ?larry
 

It keeps your coffee mug warmer?

73,

Bill KU8H

bark less - wag more

On 11/8/20 12:13 AM, Lawrance A. Schneider wrote:
On Fri, Nov 6, 2020 at 08:53 PM, Dragan Milivojevic wrote:
even better when modded and overclocked
What do you gain by overclocking it?
Thanks, ? ? ? ?larry
 

Resolution in C&L measurements when using the sampling ADC method.
It's in the linked document ...

On Sun, 8 Nov 2020 at 13:35, Lawrance A. Schneider <llaassllaaass@...> wrote:
On Fri, Nov 6, 2020 at 08:53 PM, Dragan Milivojevic wrote:
even better when modded and overclocked

What do you gain by overclocking it?

Thanks, ? ? ? ?larry

 

On Sun, Nov 8, 2020 at 07:43 AM, Bill Cromwell wrote:
It keeps your coffee mug warmer?
My question was serious. ?The thing is almost instantaneous as it is. ?The slow part is connecting the DUT.

Thanks, ? ? ? ? ? larry
 

Hi Larry,

My comment was a little bit of humor to point to power consumption increase and heat with overclocking. Sometimes that can be troublesome so just a reminder to not step in something. I see that there is one, more serious reply from Dragan.

73,

Bill KU8H

bark less - wag more

On 11/8/20 8:21 AM, Lawrance A. Schneider wrote:
On Sun, Nov 8, 2020 at 07:43 AM, Bill Cromwell wrote:
It keeps your coffee mug warmer?
My question was serious. ?The thing is almost instantaneous as it is. ?The slow part is connecting the DUT.
Thanks, ? ? ? ? ? larry
 

There have?been some on-line comments about settling time of the?
Arduino ADC.? Simple way of compensating seems to be to sample?
twice and use the second sampling.

Question is how one goes about overclocking an Arduino?? There?
seems to be no obvious way to change the internal clock rate from?
being tied tightly to the crystal frequency.? Some more adept processors?
have internal clock multipliers that can be controlled by software, but?
this does not seem to be the case with the relatively simple AVR?
processor architecture?? Am I missing something here?

Arv
_._


On Sun, Nov 8, 2020 at 6:21 AM Lawrance A. Schneider <llaassllaaass@...> wrote:
On Sun, Nov 8, 2020 at 07:43 AM, Bill Cromwell wrote:
It keeps your coffee mug warmer?
My question was serious.? The thing is almost instantaneous as it is.? The slow part is connecting the DUT.

Thanks, ? ? ? ? ? larry

 

The same way we used to overclock the CPUs in the
386 era, you replace the crystal :)



Question is how one goes about overclocking an Arduino?? There?
seems to be no obvious way to change the internal clock rate from?
being tied tightly to the crystal frequency.? Some more adept processors?
 

If changing the resonator (crystal in Arduino TINY units) how high can we?
go?? I have tried with 27 MHz but some AVR processors do not like to run?
that fast.

_._


On Sun, Nov 8, 2020 at 10:54 AM Dragan Milivojevic <d.milivojevic@...> wrote:
The same way we used to overclock the CPUs in the
386 era, you replace the crystal :)



Question is how one goes about overclocking an Arduino?? There?
seems to be no obvious way to change the internal clock rate from?
being tied tightly to the crystal frequency.? Some more adept processors?
 

If I remember correctly 32MHz but that was with an oscillator
not a crystal. Going that high will introduce other issues, search
on arduino forums ...


On Sun, 8 Nov 2020 at 19:01, Arv Evans <arvid.evans@...> wrote:
If changing the resonator (crystal in Arduino TINY units) how high can we?
go?? I have tried with 27 MHz but some AVR processors do not like to run?
that fast.

_._


On Sun, Nov 8, 2020 at 10:54 AM Dragan Milivojevic <d.milivojevic@...> wrote:
The same way we used to overclock the CPUs in the
386 era, you replace the crystal :)



Question is how one goes about overclocking an Arduino?? There?
seems to be no obvious way to change the internal clock rate from?
being tied tightly to the crystal frequency.? Some more adept processors?
 

¿ªÔÆÌåÓý

ATmega328p as found on Nano boards are
only spec¡¯d to 20MHz. ?The Arduino?
boot loader needs to be modified and things
like delay() won¡¯t be right.
73,
Gary
WB6OGD?



On Nov 8, 2020, at 10:33 AM, Dragan Milivojevic <d.milivojevic@...> wrote:

?
If I remember correctly 32MHz but that was with an oscillator
not a crystal. Going that high will introduce other issues, search
on arduino forums ...


On Sun, 8 Nov 2020 at 19:01, Arv Evans <arvid.evans@...> wrote:
If changing the resonator (crystal in Arduino TINY units) how high can we?
go?? I have tried with 27 MHz but some AVR processors do not like to run?
that fast.

_._


On Sun, Nov 8, 2020 at 10:54 AM Dragan Milivojevic <d.milivojevic@...> wrote:
The same way we used to overclock the CPUs in the
386 era, you replace the crystal :)



Question is how one goes about overclocking an Arduino?? There?
seems to be no obvious way to change the internal clock rate from?
being tied tightly to the crystal frequency.? Some more adept processors?
 

¿ªÔÆÌåÓý

AVRs are usually speced to 20MHz,? a 25% improvement over a standard Arduino

On 11/8/2020 1:32 PM, Dragan Milivojevic wrote:

If I remember correctly 32MHz but that was with an oscillator
not a crystal. Going that high will introduce other issues, search
on arduino forums ...


On Sun, 8 Nov 2020 at 19:01, Arv Evans <arvid.evans@...> wrote:
If changing the resonator (crystal in Arduino TINY units) how high can we?
go?? I have tried with 27 MHz but some AVR processors do not like to run?
that fast.

_._


On Sun, Nov 8, 2020 at 10:54 AM Dragan Milivojevic <d.milivojevic@...> wrote:
The same way we used to overclock the CPUs in the
386 era, you replace the crystal :)



Question is how one goes about overclocking an Arduino?? There?
seems to be no obvious way to change the internal clock rate from?
being tied tightly to the crystal frequency.? Some more adept processors?


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