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==2021 Phone Reprise for Door Entry System to New Capp St Space== After the move in 2020, and maybe even before? The phone had been unused. It was decided to try add VoIP back to the phone, but after a mishap with the keyboard, the phone was set aside. However, the new space was in need of a door access system for the outer door, since a gate pad lock had been used for months. A keyboard entry system was created by Woz, in which a keyboard ran to a raspberry Pi to then activate the door strike (latch). With that in place, Jaguar decided to turn the phone into a simple keyboard to replace the computer keyboard which was then outside the gate. Jaguar donated a Teensy for this and created a new keypad that sits underneath the metal keypad. The keypad uses a row and column type soldering and pinout. With this in mind Woz came up with the idea to keep all the rows low, and the columns high, then to set the column to low on keypress. This would allow code to capture the exact key pressed as follows: void loop(){ digitalWrite(rowPin0, LOW); digitalWrite(rowPin1, HIGH); digitalWrite(rowPin2, HIGH); digitalWrite(rowPin3, HIGH); if (digitalRead(columnPin0) == LOW){ Keyboard.set_key1(KEY_1); } else { Keyboard.set_key1(0); } Keyboard.send_now(); While this worked with the keyboard, a later problem occurred where the Raspberry Pi got damaged. So new code was written to control the door directly from the Teensy. Please see the [https://github.com/masparasol/payphone-keyboard github repo] for the latest version. Currently (~Dec 2021) the phone lives in this state with a custom keyboard and the teensy chip (which runs on arduino software). It can now be hacked to play music, or use the ear piece of the phone, and various other ideas for the phone. Contact Paul_H on the slack/discord/discuss with questions. :) [https://raw.githubusercontent.com/masparasol/payphone-keyboard/main/run-keyboard-to-digital-pwm.jpg Photo of keyboard wiring to Teensy] [https://raw.githubusercontent.com/masparasol/payphone-keyboard/main/keypad-wire-to-strike-and-power.jpg Photo of keyboard wired to power and door strike(latch)] [https://raw.githubusercontent.com/masparasol/payphone-keyboard/main/legacy-power-conversion-to-activate-strike.jpg Electronics to power strike and teensy chip] [https://raw.githubusercontent.com/masparasol/payphone-keyboard/main/phone-hanging-outside-gate.jpg Phone outside the gate.]
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