Megatronics V2- Inverted end stop damage IC2
Here is a picture of my Megatronics V2 board from the bottom [attachment 32913 01013736-2.jpg]. What you are seeing is apparently an interrupt controller called IC2 on the Sainsmart Megatronics V2....
View ArticleRe: Megatronics V2- Inverted end stop damage IC2
My SainSmart Megatronics 2.0 encountered a short circuit due to a bad crimp on one of the external display ribbon cables. Since then, it will only run from USB power. I never wasted my time...
View ArticleRe: About Pin Number Question?
Thanks very much for your explanation in detail. I can control my stepper motor now by using Creation Workshop software with Sprinter firmware. Until yesterday night, I did't figured out these pin...
View ArticleRe: About Pin Number Question?
If you do not actually use a ramps board, it is better to avoid that for motherboard setting. Ramps had several versions which resulted in a confusing and stacking pin definition and nested #if...
View ArticleRe: Megatronics V2- Inverted end stop damage IC2
IC2 is integrated circuit 2, not interrupt controller. Doesnt help with your issue, but may save some confusion I would suspect its a voltage regulator
View ArticleRe: Megatronics V2- Inverted end stop damage IC2
The endstop pinout is probably | +vcc | gnd | signal | i think to ensure that also optoendstops can be used, which need vcc. I think the OP probably wired the mechanical endstop between vcc and gnd,...
View ArticleRe: Megatronics V2- Inverted end stop damage IC2
Yes that should be a regulator. Maybe that is why I was not able to locate the part. I plugged the mechanical switch in the vcc like an optical end stop because it has a LED on it. Not sure if I'll be...
View ArticleRe: Firmware to drive X-Y galvanometer
... first test with laser at 20 Watts, 100µs pulsing time on a black enamelled tile: [vimeo.com] Tested with 80 Watt and 200µs pulse-time (50% PWM ratio) ... the mirrors survived, but this was no...
View ArticleRe: Megatronics V2- Inverted end stop damage IC2
My IC2 doesn't appear to have a hole in it, but I have not tested it to see if it is working. I am only confirming that my board could run without USB power at one point before it encountered a short...
View ArticleRe: RADDS RepRap Arduino-Due Driver Shield (32bit)
Can you ship to the US and what would be the cost?
View ArticleServo wobbling, basic electronics question inside .. Help needed
Hi! I just set up auto bed leveling and it could work much better. The problem is that my servo is wobbling a couple of degrees back and forth, especially during stepper movements (z-axis). It seems...
View ArticleRe: Servo wobbling, basic electronics question inside .. Help needed
Just learned that servos are pwm driven, so maybe the capacitor is not a good idea, I thought they are voltage driven. Any othe thoughts?
View ArticleRe: Servo wobbling, basic electronics question inside .. Help needed
Make sure the signal line to the servo is shielded and that shielding is grounded at (only) one of the ends - the one from board. Do not try use the shielding for any other purpose. No caps on the...
View ArticleRe: Servo wobbling, basic electronics question inside .. Help needed
Hi, what do you mean by shielding? And by local regulator you mean a 5v source that has nothing to do with the ramps at all? I could use a USB power supply for that... Another option would be using a...
View ArticleRe: Servo wobbling, basic electronics question inside .. Help needed
Uh ok, shielding is a cable that has an outer layer of wire mesh or metal foil and that outer mesh is connected to ground, and this way it protects the inner wires from any outer external field which...
View ArticleRe: Servo wobbling, basic electronics question inside .. Help needed
Ok, thanks for your hints, this is what I tried now: -Used a shielded USB Cable (cut the plugs off and soldered the mesh to GND) ----> No change -.Used 100uF and 470uF caps (10 and 35v) ----->...
View ArticleRe: Servo wobbling, basic electronics question inside .. Help needed
There´s digital and analog servos around.... judging from the low cost my servos were, maybe it´s worth trying a digital servo?
View ArticleRe: Servo wobbling, basic electronics question inside .. Help needed
If the shielding and a motor cap did not solved the issue, then its probably not interference and probably not a power issue either, although the latter would be better confirmed with a local 5v...
View ArticleRe: Servo wobbling, basic electronics question inside .. Help needed
By any chance, you do not use positions like 0 or 180 degree (in case of 180 servo), that would be too close to its limits. For the best, use the two positions like 40 degrees and 140, so its spaced...
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