Macro for Testing Max Accleration

Superbrain8

I where looking for a easy method to test how much Accleration i could potentially run on my Printer.
Klipper has that nice macro written by Andrew Ellis that makes it easy to run tests Automated so ive looked into creating something similar to test how far i can push the Accleration at a set speed

Resulting in the Following Macro

;-------------------Accel Test Macro----------------------------------------------
;this Macro aims to create random movements at set speed and set Accel
;There is a chance that this macro causes a Rapid Movement towards the Min Axis point the macro takes X0 and Y0 as Origin
;aviable macro parameters:
; S = max speed in mm/min
; I = Max Iterations
; A = Accleration Increment

;move.axes[0] X Axis
;move.axes[1] Y Axis
;move.axes[2] Z Axis

;--------------------Variables---------------------------------------------------
var xmax  = floor(move.axes[0].max-5)                                          ; Grab Max Distance in X
var ymax = floor(move.axes[1].max-5)                                           ; Grab Max Distance in Y 
var xmaxspeed = move.axes[0].speed                                             ; Grab Max Speed in X
var ymaxspeed = move.axes[1].speed                                             ; Grab max Speed in Y
var maxspeed = 0                                                               ; Placeholder for Max speed
var maxiterations = 5                                                          ; how often does the Macro gets repeated
var maxmoves = 30                                                              ; how many moves are made by the macro
var xaccel = move.axes[0].acceleration                                         ; grab XAccel from config
var yaccel = move.axes[1].acceleration                                         ; grab YAccel from config
var accel_inc = 0                                                              ; increment accleration by this value each iteration

;------------------Functions----------------------------------------------------
set var.maxspeed = var.xmaxspeed > var.ymaxspeed ? var.xmaxspeed:var.ymaxspeed ; get max configured speed for the test
if exists(param.S)
    set var.maxspeed = param.S                                                 ; Overwrite Max Speed from Macro parameter if set
if exists(param.I)
    set var.maxiterations = param.I                                            ; Overwrite Iterations from macro parameter if set
if exists(param.A)
    set var.accel_inc = param.A                                                ; Overwrite accel_inc from a macro parameter if set
;------------------Prepare Printer----------------------------------------------
if !move.axes[0].homed || !move.axes[1].homed || !move.axes[2].homed
    G28                                                                        ; Home Axis if not Homes
G1 Z20                                                                         ; Clear Bed
M400                                                                           ; Wait for movements to finish
;-----------------Test Gcode----------------------------------------------------
echo "running Accel Test"
echo "Max Speed:",var.maxspeed
echo "Iterations:", var.maxiterations
while true   
    M400                                                                       ; Wait for all movements to finish
    M201 X{var.xaccel} Y{var.yaccel}                                           ; set Accel
    if iterations = var.maxiterations
        abort "finished Accel Test"                                            ; Loop until max repats are reached
    echo "running Iteration", iterations  
    echo "X Accleration", var.xaccel
    echo "Y Accleration", var.yaccel
    set var.xaccel = var.xaccel+var.accel_inc                                  ; increment the X axis accleration for the next loop
    set var.yaccel = var.yaccel+var.accel_inc                                  ; Increment the Y axis accleration for the next loop
    while true
        if iterations = var.maxmoves
            break
        var xrnd = random(var.xmax)
        var yrnd = random(var.ymax)
        G1 F{var.maxspeed} X{var.xrnd} Y{var.yrnd}                             ; Move X and Y in random directions at set speed
M400
echo "restart the Mainboard or Reload the Config file again to reset Accleration to its original value"
M2

This Macro takes the machine limits in X and Y (expecting Home to be at the Min point)
and then puts random movements within the Machine Limit at the set speed and Accleration
by default it doesnt increase the Accleration with each Iteration but can be configured to do so with a Parameter attached to the Macro Call

its not perfect but gave me useable results
might be helpful for others so i post it here.

Something to consider because of the Random Movements is that its not 100% repeatable but should give more realistic results due to being closer to actual print movements

jay_s_uk

@Superbrain8 I have a similar one here https://forum.duet3d.com/topic/32433/determining-max-speed-and-acceleration

Superbrain8

@jay_s_uk didnt really showed up when searching for it, the pinned macros showed up but they are a bit bulky