I am experimenting with the E555 SPKEngine Demo (with my modification to the sound output) and it works great on my Propeller pro dev board. I moved it to my quickstart rev a board and i don't get any sound out of the speaker. I am powering the quickstart through pins 39 and 40 on J1 with a 9 volt wallwart and use the same suppy for the PP dev board. There are only two connections (besides power and ground) to each board. One wire from pin 5 to the speaker and one wire from the ground to the other speaker wire. The program runs as expected (produces sound from the speaker) on the PP dev board and I get nothing on the quickstart.
No changes to the spin program between boards and i have tested other identical programs (flashing leds) between boards and all works fine.
I am a bit green on the hardware side but I am really confused on what appears to be a simple situation. Assume it might be a power related.
Any ideas from the group?
No changes to the spin program between boards and i have tested other identical programs (flashing leds) between boards and all works fine.
I am a bit green on the hardware side but I am really confused on what appears to be a simple situation. Assume it might be a power related.
Any ideas from the group?