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Forum Index : Microcontroller and PC projects : Pico doesn't like to be touched by i.e. probes
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nbrok Regular Member  Joined: 13/02/2023 Location: NetherlandsPosts: 60 |
Hi, Still experimenting with the pico and discovered this: I wanted to check the voltage of the powersupply on VSYS and 3.3V with a multimeter (digital) and spontaneous the pico resets. It is only touching one of the powerlines that causes this behavior. Is the noise made by the on board regulator so loud that a probe functions as an antenna and destabilize the powerline that causes a power-on reset? A screwdriver (isolated) gives the same result... My conclusion and opinion Pico's are very sensitive devices....  Touching by fingers doesn't cause anything..... (fingers have a high resistance) Strange isn't? Greetings, Nick de pe1goo |
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TassyJim Guru  Joined: 07/08/2011 Location: AustraliaPosts: 6102 |
Put a 10k resistor from RUN pin to 3.3V and a 0.01 capacitor from RUN to GND. Jim VK7JH MMedit MMBasic Help |
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| nbrok Regular Member Joined: 13/02/2023 Location: NetherlandsPosts: 60 |
You mean a 0.01 uF capacitor (10nF)? I hope.  I'll try your suggestion... Thanks. Greetings, Nick de pe1goo |
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| TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6102 |
Yes 0.01uF I should proof read better. VK7JH MMedit MMBasic Help |
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