Testing an old ProMini without Vcc/MHz indication

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MaxZ
Posts: 286
Joined: 31 Jan 2019, 11:48
Location: Boskoop, Netherlands

Testing an old ProMini without Vcc/MHz indication

Post by MaxZ »

I have an old ProMini board that came with a bundle of secondhand stuff, without the Vcc and MHz identified. It does say "The Simple" on the back, so I guess the manufacturer "simply" forgot to do that ;)

I can work out the Vcc by connecting a power source to Vin, and measure Vcc, no problem there. But is there a simple way to check the clocking frequency?

Cheers,
Max.
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Mike_K
Posts: 496
Joined: 16 Feb 2018, 06:35
Location: Hertfordshire

Re: Testing an old ProMini without Vcc/MHz indication

Post by Mike_K »

The "Simple" Pro Mini come in two versions, if it's 5V then it's 16MHz, 3.3V it's 8MHz. Then to confirm the frequency, load the blink sketch and check the blink speed is correct.

Cheers Mike
MaxZ
Posts: 286
Joined: 31 Jan 2019, 11:48
Location: Boskoop, Netherlands

Re: Testing an old ProMini without Vcc/MHz indication

Post by MaxZ »

"Simple" as that eh? Thanks Mike.
Max.
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kalle123
Posts: 31
Joined: 02 Feb 2021, 07:06

Re: Testing an old ProMini without Vcc/MHz indication

Post by kalle123 »

I don't know 'The Simple' boards, but this is a helpful YT video for identification what you got on the table ....

https://www.youtube.com/watch?v=3eUEaKcPs0M

br KH
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