Propeller Mini - convert to 5V operation?
timg11
Posts: 3
Hi everyone, just joined here and have my first Propeller Mini. I don't know if the Mini belongs in Propeller 1 or 2, so I'll try posting here.
I'm going to use the Mini in conjunction with a Raspberry Pi, so I already have 5V available from the Pi. I don't have a 6.5V supply available, though.
From the schematic, the Propeller Mini really runs from 3.3V and uses two regulators to step down the input voltage.
To supply with 5V, I would need to bypass VR1, the LM2940-5.0 regulator.
The easy route would be to solder a wire from In to Out on VR1, and then use the VIN pin for 5V. I'm not sure if the LM2940-5.0 would have a problem with that? It would be somewhat more difficult to fully remove VR1 and then bypass on the pads, so I don't want to do that if I don't have to.
Has anyone tried the bypass approach? Any suggestions on the easiest, safest way to convert to 5V input supply?
I'm going to use the Mini in conjunction with a Raspberry Pi, so I already have 5V available from the Pi. I don't have a 6.5V supply available, though.
From the schematic, the Propeller Mini really runs from 3.3V and uses two regulators to step down the input voltage.
To supply with 5V, I would need to bypass VR1, the LM2940-5.0 regulator.
The easy route would be to solder a wire from In to Out on VR1, and then use the VIN pin for 5V. I'm not sure if the LM2940-5.0 would have a problem with that? It would be somewhat more difficult to fully remove VR1 and then bypass on the pads, so I don't want to do that if I don't have to.
Has anyone tried the bypass approach? Any suggestions on the easiest, safest way to convert to 5V input supply?
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