Using Digilent "Pmod" modules with the Parallax 1-2-3 FPGA board
Tubular
Posts: 4,705
I confess I haven't fired up my 1-2-3 board just yet. I want to get a suitable dedicated supply. However first impressions are really good. Its a solid board with several evident user friendly touches, such as the thorough labeling on the reverse side (where there's more room). Quality feeds really good and worthy of its 'made in USA' label. Well done, Daniel and team.
Those who have worked with FPGA's probably know of the wide range of Digilent 'pmod' modules available. These can be fitted directly to the 3v3 and 2v5 gpio headers, see photos. This can be achieved because of the vdd-gnd-pin-pin-pin-pin ordering at both end of both gpio headers.
Some of those modules need a particular voltage which means then may need to go on the 3v3 header rather than the 2v5 header, but many (leds, encoders, switches etc) don't care. I notice one of the ADC modules even works down at 2.35v. I haven't exhaustively checked the list
The pmod's are usually used with a short female-female cable, but for quick and easy evaluation the direct approach is good and flexible. I think up to 8 modules of the 6 pin variety can be accommodated, depending on their physical size, but the smaller (~0.8" wide) ones should all fit fine.
Yes there's the breadboard, but that involves wires.
Those who have worked with FPGA's probably know of the wide range of Digilent 'pmod' modules available. These can be fitted directly to the 3v3 and 2v5 gpio headers, see photos. This can be achieved because of the vdd-gnd-pin-pin-pin-pin ordering at both end of both gpio headers.
Some of those modules need a particular voltage which means then may need to go on the 3v3 header rather than the 2v5 header, but many (leds, encoders, switches etc) don't care. I notice one of the ADC modules even works down at 2.35v. I haven't exhaustively checked the list
The pmod's are usually used with a short female-female cable, but for quick and easy evaluation the direct approach is good and flexible. I think up to 8 modules of the 6 pin variety can be accommodated, depending on their physical size, but the smaller (~0.8" wide) ones should all fit fine.
Yes there's the breadboard, but that involves wires.
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