Update readme file

diff --git a/README.md b/README.md
index 3a4705e78beba0e3eccc9cfbb4bbaa8e632ce364..b61129b3624a0549e8ec5c0784fb4575abaea804 100644 (file)
--- a/README.md
+++ b/README.md
@@ -42,6 +42,7 @@ Features:
 *   Endstop trigger reporting to the host software.\r
 *   Updated sdcardlib\r
 *   Heater power reporting. Useful for PID monitoring.\r
+*   PID tuning\r
 \r
 The default baudrate is 250000. This baudrate has less jitter and hence errors than the usual 115200 baud, but is less supported by drivers and host-environments.\r
 \r
@@ -145,20 +146,30 @@ Movement variables:
 *   M203 - Set maximum feedrate that your machine can sustain (M203 X200 Y200 Z300 E10000) in mm/sec\r
 *   M204 - Set default acceleration: S normal moves T filament only moves (M204 S3000 T7000) im mm/sec^2  also sets minimum segment time in ms (B20000) to prevent buffer underruns and M20 minimum feedrate\r
 *   M220 - set build speed mulitplying S:factor in percent ; aka "realtime tuneing in the gcode". So you can slow down if you have islands in one height-range, and speed up otherwise.\r
-*   M301 - Set PID parameters P I and D\r
+*   M221 - set the extrude multiplying S:factor in percent\r
 *   M400 - Finish all buffered moves.\r
 \r
+Temperature variables:\r
+*   M301 - Set PID parameters P I and D\r
+*   M302 - Allow cold extrudes\r
+*   M303 - PID relay autotune S<temperature> sets the target temperature. (default target temperature = 150C)\r
+\r
 Advance:\r
 \r
 *   M200 - Set filament diameter for advance\r
-*   M205 -  advanced settings:  minimum travel speed S=while printing T=travel only,  B=minimum segment time X= maximum xy jerk, Z=maximum Z jerk\r
+*   M205 - advanced settings:  minimum travel speed S=while printing T=travel only,  B=minimum segment time X= maximum xy jerk, Z=maximum Z jerk\r
 \r
 EEPROM:\r
 \r
 *   M500 - stores paramters in EEPROM\r
 *   M501 - reads parameters from EEPROM (if you need reset them after you changed them temporarily).  \r
 *   M502 - reverts to the default "factory settings".  You still need to store them in EEPROM afterwards if you want to.\r
+*   M503 - print the current settings (from memory not from eeprom)\r
+\r
+MISC:\r
 \r
+*   M240 - Trigger a camera to take a photograph\r
+*   M999 - Restart after being stopped by error\r
 \r
 Configuring and compilation:\r
 ============================\r