Thanks for that tip. Now I see why all the VGA demos have the basepin set at 16. For the project board, I find it easier to have the basepin at 0, see the attached image for my wiring.
Just to know why Parallax removed the 5 volts regulator. It was very usefull. All sensors
need 5 volts input. And now if I need to add a 5 volts sensor I don't know what I need to do.
You can either power the board from USB which provides a source of +5V or you can power the board from some other external +5V source or you can power the board from some source of +6V to +16V and mount your own LDO (low dropout) regulator on the board. Depending on the current drain, you could use a simple (cheap) linear regulator (like the LM2936Z-5.0 or LM2940T-5.0) or a switching regulator module.
I'm sure Parallax left off the 5V regulator because fewer and fewer devices are using 5V these days and it saves both cost and board space. They did supply a nice switching regulator for the 3.3V supply. USB normally supplies +5V and a lot of projects these days run off a wall-wart designed for providing +5V to a USB-based charger.
Just to know why Parallax removed the 5 volts regulator. It was very usefull. All sensors
need 5 volts input. And now if I need to add a 5 volts sensor I don't know what I need to do.
Could you help me ?
Thanks,
The new Revision "B" 32810 has a spot on the back of the board for an additional regulator. If you have a revision "A" board, you could add a regulator like this one from Parallax to the prototyping area.
Comments
Thanks for that tip. Now I see why all the VGA demos have the basepin set at 16. For the project board, I find it easier to have the basepin at 0, see the attached image for my wiring.
Thanks,
Marcus
About the Propeller Project Board USB code 32810.
Just to know why Parallax removed the 5 volts regulator. It was very usefull. All sensors
need 5 volts input. And now if I need to add a 5 volts sensor I don't know what I need to do.
Could you help me ?
Thanks,
I'm sure Parallax left off the 5V regulator because fewer and fewer devices are using 5V these days and it saves both cost and board space. They did supply a nice switching regulator for the 3.3V supply. USB normally supplies +5V and a lot of projects these days run off a wall-wart designed for providing +5V to a USB-based charger.
The new Revision "B" 32810 has a spot on the back of the board for an additional regulator. If you have a revision "A" board, you could add a regulator like this one from Parallax to the prototyping area.