3:14 AM
@kyrpav I got most of the prototyping boards from TaoBao, some blue, some green, some are 5 hole joint, some 3 joint. I guess you can also find them in AliEx. References below:
TaoBao ***洞洞板***,***實驗板*** (Hole Hole Board, Prototyping Board)
https://dzyj.world.taobao.com/category-746222578.htm?spm=a312a.7700824.w4002-14787471864.31.6df4191fkEJg2s&_ksTS=1644980972782_733&callback=jsonp734&input_charset=gbk&mid=w-14787471864-0&wid=14787471864&path=%2Fcategory-746222578.htm&search=y&parentCatId=13313739&parentCatName=%CA%B5%D1%E9%B0%E5%A3%AC%C3%E6%B0%FC%B0%E5%A3%AC%B8%D0%B9%E2%B0%E5%A3%AC%B8%B4%CD%AD%B0%E5&catName=%B6%B4%B6%B4%B0%E5%A3%AC%CA%B5%D1%E9%B0%E5&catId=746222578&pageNo=1#anchor
https://dzyj.world.taobao.com/category-746222578.htm?spm=a312a.7700824.w4002-14787471864.31.6df4191fkEJg2s&_ksTS=1644980972782_733&callback=jsonp734&input_charset=gbk&mid=w-14787471864-0&wid=14787471864&path=%2Fcategory-746222578.htm&search=y&parentCatId=13313739&parentCatName=%CA%B5%D1%E9%B0%E5%A3%AC%C3%E6%B0%FC%B0%E5%A3%AC%B8%D0%B9%E2%B0%E5%A3%AC%B8%B4%CD%AD%B0%E5&catName=%B6%B4%B6%B4%B0%E5%A3%AC%CA%B5%D1%E9%B0%E5&catId=746222578&pageNo=1#anchor
3:25 AM
(1) 5连孔单面喷锡板2.54/5.08MM间距 10*15CM万能板实验板全玻纤蓝油 - ¥3.80
https://item.taobao.com/item.htm?spm=a230r.1.14.151.437a2b99Lq3Vm4&id=646585854398&ns=1&abbucket=14#detail
(2) PCB电路板双面喷锡绿油玻纤FR4实验板万能板 2*8 3*7 4*6 5*7 9*15
https://item.taobao.com/item.htm?id=567780499776&ali_refid=a3_430620_1006:1104988017:N:Lnc0WvnlH9l%2F%2BKQdIfnP%2BQ%3D%3D:b129c9439970c826de7b3897fa5a3ec2&ali_trackid=1_b129c9439970c826de7b3897fa5a3ec2&spm=a230r.1.14.8#detail
https://item.taobao.com/item.htm?spm=a230r.1.14.151.437a2b99Lq3Vm4&id=646585854398&ns=1&abbucket=14#detail
(2) PCB电路板双面喷锡绿油玻纤FR4实验板万能板 2*8 3*7 4*6 5*7 9*15
https://item.taobao.com/item.htm?id=567780499776&ali_refid=a3_430620_1006:1104988017:N:Lnc0WvnlH9l%2F%2BKQdIfnP%2BQ%3D%3D:b129c9439970c826de7b3897fa5a3ec2&ali_trackid=1_b129c9439970c826de7b3897fa5a3ec2&spm=a230r.1.14.8#detail
2 hours later…
5:44 AM
3 hours later…
9:00 AM
Now I have setup the second tmc2225 for basic testing, using XY-LPWM sig gen as step pulse input, and both tmc2225 in standalone mode, no uart control.
The motor spec says min pulse rate is 1k7 pps. But I found that if I set micro stepping to 1/4 resolution, I can lower the freq to as low as 20pps, both motor still move slowly. The max pps is around 4kHz, which the motor starts trembling violently, and not moving at all.
9:31 AM
9:47 AM
(1) https://item.taobao.com/item.htm?spm=a312a.7700824.w4002-14787471864.21.61387c50WJjP9m&id=571492461591
(2) https://dzyj.world.taobao.com/category-46309243.htm?spm=a312a.7700824.w4010-14787471861.142.597e191f6QY8C9&search=y&parentCatId=46309225&parentCatName=%C5%C5%D5%EB%2F%D7%F9+USB%D7%F9%D7%D3+%C0%E4%D1%B9%CD%B7+%BD%D3%CF%DF%D6%F9&catName=%C5%C5%D5%EB%2F%D7%F9#bd
(2) https://dzyj.world.taobao.com/category-46309243.htm?spm=a312a.7700824.w4010-14787471861.142.597e191f6QY8C9&search=y&parentCatId=46309225&parentCatName=%C5%C5%D5%EB%2F%D7%F9+USB%D7%F9%D7%D3+%C0%E4%D1%B9%CD%B7+%BD%D3%CF%DF%D6%F9&catName=%C5%C5%D5%EB%2F%D7%F9#bd
10:23 AM
tmc2225 Datasheet Section 2.2 Signal Descriptions TMC2225
VREF 12 AI Analog reference voltage for current scaling or reference current for
use of internal [current] sense resistors (optional mode)
DIAG 18 DO Diagnostic output. Hi level upon driver error. Reset by ENN=high.
VREF 12 AI Analog reference voltage for current scaling or reference current for
use of internal [current] sense resistors (optional mode)
DIAG 18 DO Diagnostic output. Hi level upon driver error. Reset by ENN=high.
2 hours later…
12:09 PM
Now I am using xy-lpwm to input 2kHz step pulses to the motor controller, and display the motor encoder pulse output waveform.
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Transcript for
Feb15
Feb '2216
Feb17
Discussion between tlfong01 and kyrpav
Imported from a comment discussion on electronics.stackexchang...