Add more instructions

README.md

@@ -3,3 +3,12 @@
 Uses stock MicroPython firmware running on ESP8266 Wemos D1 Arduino or D1 Mini
 
 * https://micropython.org/download/ESP8266_GENERIC/
+
+# Usage
+
+1. Get latest MicroPython and name it `sumofirmware.bin`
+2. Edit `config.json` with the target sumorobot ID (MAC last 6 hexdets)
+3. Run `make` to flash and configure the remote
+
+The remote will now connect to the `sumo` wifi and will do a DNS lookup against `sumo-<ID>`
+to find the target IP address and then will start blasting UDP packets against it

main.py

@@ -7,8 +7,17 @@ while not wlan.isconnected():
     sleep_ms(100)
 
 adc = ADC(0)
+
+# Wemos D1 Mini (277010)
+#  Pin 16 forward pin 4 backwards
+#forward = Pin(0, Pin.IN)
+#backward = Pin(2, Pin.IN)
+
+# Wemos D1 Normal Arduino
+#  Pin 16 forward pin 4 backwards
 forward = Pin(16, Pin.IN)
 backward = Pin(4, Pin.IN)
+
 calibration = adc.read()
 
 sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) # UDP
@@ -29,5 +38,6 @@ print("Sending packets to", sockaddr)
 
 while True:
     msg = "%d:%d:%d" % (adc.read()-calibration, not forward.value(), not backward.value())
+    print(msg)
     sock.sendto(msg.encode("ascii"), sockaddr)
     sleep_ms(30)