Initial working example using curses

server/.gitignore

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server/common.py

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+try:
+    import RPi.GPIO as GPIO
+except RuntimeError:
+    print("Error importing RPi.GPIO!  This is probably because you need superuser privileges.  You can achieve this by using 'sudo' to run your script")
+
+GPIO.setmode(GPIO.BCM)
+
+right_pin = 25
+left_pin = 23
+hard_pin = 24
+fwd_pin = 17
+back_pin = 18

server/control.py

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+#!/usr/bin/python3
+
+import curses
+import time
+
+from .common import *
+
+pin_map = {
+    'w': fwd_pin,
+    'a': left_pin,
+    's': back_pin,
+    'd': right_pin
+}
+
+all_pins = list(pin_map.values())
+all_pins.append(hard_pin)
+
+def main(stdscr):
+    current_milli_time = lambda: int(round(time.time() * 1000))
+
+    stdscr.nodelay(1)
+
+    lastcommand = current_milli_time()
+    while True:
+        # get keyboard input, returns -1 if none available
+        c = stdscr.getch()
+        if c != -1:
+            # print numeric value
+            stdscr.addstr(str(c) + ' ')
+            stdscr.refresh()
+            # return curser to start position
+            stdscr.move(0, 0)
+            char = chr(c)
+            if char.lower() in pin_map:
+                GPIO.output(pin_map[char.lower()], GPIO.HIGH)
+            if char.isupper():
+                GPIO.output(hard_pin, GPIO.HIGH)
+            elif c == ord('q'):
+                return
+            lastcommand = current_milli_time()
+        elif current_milli_time() - lastcommand > 100:
+            GPIO.output(all_pins, GPIO.LOW)
+
+    GPIO.cleanup()
+
+if __name__ == '__main__':
+    curses.wrapper(main)