Last bit of blabbing in the readme

README.md

@@ -1,9 +1,10 @@
 # 18V 5A H-Bridge breakout board
 * For driving **DC motors**, **coils** or other inductive loads
 * **Bi-directional** output control
-* Input **3.0-18V**
-* Output **up to 5A continuous**, up to 9A pulse
-* Works with **1.8V to 6.0V logic** level inputs
+* **3.0-18V** input voltage
+* **5A continuous** output current, up to 9A pulse
+* **1.8V to 6.0V input logic** compatible
+* **PWM** compatible, for output power level control
 * Overcurrent protection
 * Short circuit protection
 * Overheat protection
@@ -22,7 +23,14 @@
 ## "Analog" control
 * The power of the motor can be precisely adjusted (0-100%) by applying a PWM SQUARE WAVE to the FORWARD/REVERSE pins
 * Recommended PWM frequency: 100Hz - 5KHz
-* "analogWrite()" on Arduino produces a suitable 490Hz square wave with 255 levels of control
+* Max frequency: 30KHz
+* "analogWrite()" on Arduino produces a suitable 490Hz square wave with 256 levels of control
+* The control PWM from the input is simply directly applied to the output, there is no magical logic in the device. The provided PWM frequency will be present on the motors.
+	* Higher frequencies cause switching losses and non-linear power scaling
+	* 1-2KHz will cause the most annoying coil whine sounds
+	* Low frequencies might cause noticable vibrations
+	* 400Hz is a good starting point
+* You can *not* provide an analog input (like from a potentiometer) to the inputs of this device!
 
 
 # PCB assembly / component configurations
@@ -90,7 +98,8 @@ The TMI8260/CP2119 has protection features that allow it to protect **ITSELF**
 * Most of the heat from the IC seems to be dissipating though the OUT1 / OUT2 pins
 * Therefore, the OUT1 / OUT2 polygons should be enlarged, for better cooling
 * Maybe the IC should be moved more towards the middle of the board
-* Right now the board can barely handle 5A
+* Maybe the board could be made a little bigger, for better heat sinking
+* Right now the board can just about handle 5A, but the chip gets very hot
 
 ### Solderability
 * The large cap is very difficult to solder
@@ -98,5 +107,8 @@ The TMI8260/CP2119 has protection features that allow it to protect **ITSELF**
 * The optional flyback diodes are difficult to solder
 	* The footprint should be made hand-solderable (by enlarging the pad by a lot)
 
+### Extra features
+* Spots for adding LED indicators for FORWARD and REVERSE signal levels might be neat
+
 ---
 Made at [ELAB](http://elab.kth.se) by Marek Baczynski. Find him on the ELAB slack if you have any questions