profdc9 / RFBitBanger

A QRP digital transceiver created from readily available parts for off-the-grid maintenance
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Pi pico viability? #2

Open jdude104 opened 1 year ago

jdude104 commented 1 year ago

Would the Arduino component be able to be easily replaced with a pico as the target board? Well the atmel chip is good for a SHTF scenario, in the current global climate it's much easier to get a bulk amount of picos, so being able to use one in place would increase the usability.

profdc9 commented 1 year ago

I seriously looked into this, however, the ADC bug on the current Pico is going to compromise the sensitivity of the receiver by probably 10 dB at least. It would be a much superior chip to use in many ways, and if this bug did not exist in the current silicon, would be a viable target.

https://electronics.stackexchange.com/questions/613537/how-is-this-peak-dnl-error-in-rp2040-adc-realised-in-actual-use https://forums.raspberrypi.com/viewtopic.php?t=323704

That said, it may be worth pursuing now in anticipation it will be fixed at a later date.

On Thu, Jan 19, 2023 at 7:30 PM jdude104 @.***> wrote:

Would the Arduino component be able to be easily replaced with a pico as the target board? Well the atmel chip is good for a SHTF scenario, in the current global climate it's much easier to get a bulk amount of picos, so being able to use one in place would increase the usability.

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kholia commented 1 month ago

Pico 2 has fixed this ADC bug and should be available widely in the next 4 to 6 weeks.