Editing Cellular Rotary Phone
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Really simple - the GM862 requires 3.8V and a Lithium Polymer outputs 3.7-4V. No regulator needed, but we will need a charger. We currently use an external charger from a third party company. Aubrey noted the GM862 has a built in Lithium-Ion charger that may work, we haven't tested it yet. Ideally we would stick a barrel jack in the back of the enclosure where the RJ11 telephone jack used to reside. Anyone have any recommendations? | Really simple - the GM862 requires 3.8V and a Lithium Polymer outputs 3.7-4V. No regulator needed, but we will need a charger. We currently use an external charger from a third party company. Aubrey noted the GM862 has a built in Lithium-Ion charger that may work, we haven't tested it yet. Ideally we would stick a barrel jack in the back of the enclosure where the RJ11 telephone jack used to reside. Anyone have any recommendations? | ||
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===Rotary Decoding=== | ===Rotary Decoding=== | ||
We use a PIC 16LF88 (remember we are at 3.7V! We need a low-voltage PIC!) to read the hook and rotary. Pretty simple switch decoding routine. We just read the opening/closing of the paddles behind the rotary. There are two - one set of paddles opens and closes for each number that passes by, the other set of paddles is normally open when the rotary is in the home position and closed while the rotary dial is moving. Reading this second set of paddles will tell us when the dialing of a single number is complete. | We use a PIC 16LF88 (remember we are at 3.7V! We need a low-voltage PIC!) to read the hook and rotary. Pretty simple switch decoding routine. We just read the opening/closing of the paddles behind the rotary. There are two - one set of paddles opens and closes for each number that passes by, the other set of paddles is normally open when the rotary is in the home position and closed while the rotary dial is moving. Reading this second set of paddles will tell us when the dialing of a single number is complete. |