Breakout board pinout low/high state problem
- Amolpploma
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14 Oct 2023 01:08 #282953
by Amolpploma
Breakout board pinout low/high state problem was created by Amolpploma
Hi everyone. I'm facing a strange problem with my Chinese bob (the one with a blue relay). I wired pin 16 as the signal to a relay module that controls spindle CCW movement through VCD. The CW movement is controled by the onboard relay. Strangely, when I turn on the PC, both relays are trigged. Before the end of the startup messages, the built-in relay turns off but the relay connected to pin 16 remains on. Only when I launch linuxcnc the relay module is turned off and both relays start working as expected (M3/M4/M5) . I assumed that all pinouts should maintain the low state until trigged, right? Any suggestions to resolve this issue? Thank you.
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- tommylight
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14 Oct 2023 01:42 #282959
by tommylight
Replied by tommylight on topic Breakout board pinout low/high state problem
Short of using a charge pump, there is no solution.
Parallel port changes states of pins during boot, it was used for diagnosing stuff on PC's.
You can however use another pin that might not change states, but you have to test other output pins to be sure.
Parallel port changes states of pins during boot, it was used for diagnosing stuff on PC's.
You can however use another pin that might not change states, but you have to test other output pins to be sure.
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14 Oct 2023 01:49 - 14 Oct 2023 01:50 #282960
by COFHAL
Replied by COFHAL on topic Breakout board pinout low/high state problem
Work fine.
Just found this amazing item on AliExpress. Check it out! Please help me choose!
$8.71 35%OFF | MACH3 charge pump module / MACH3 delay control module / 2 pulse delay control sensor
a.aliexpress.com/_m04XtuI
Just found this amazing item on AliExpress. Check it out! Please help me choose!
$8.71 35%OFF | MACH3 charge pump module / MACH3 delay control module / 2 pulse delay control sensor
a.aliexpress.com/_m04XtuI
Last edit: 14 Oct 2023 01:50 by COFHAL.
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14 Oct 2023 10:35 #282977
by tommylight
Replied by tommylight on topic Breakout board pinout low/high state problem
Link does not work:
Sorry, the page you requested can not be found:(
That is what it says.
Sorry, the page you requested can not be found:(
That is what it says.
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15 Oct 2023 01:04 - 15 Oct 2023 01:06 #283025
by COFHAL
Replied by COFHAL on topic Breakout board pinout low/high state problem
Last edit: 15 Oct 2023 01:06 by COFHAL.
The following user(s) said Thank You: tommylight
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15 Oct 2023 01:30 #283026
by tommylight
Replied by tommylight on topic Breakout board pinout low/high state problem
Same thing, does not work for me as it redirects me to the German site.
Thank you.
Thank you.
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15 Oct 2023 10:35 #283050
by Amolpploma
Replied by Amolpploma on topic Breakout board pinout low/high state problem
Thanks for your help guys.
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15 Oct 2023 12:06 #283060
by tommylight
Replied by tommylight on topic Breakout board pinout low/high state problem
Charge pump is easy, some capacitors, a resistor and a transistor.
The problem is, if you search for charge pump on the internet you get bombarded with "voltage multipliers" named as charge pump, so not easy to find at all.
The problem is, if you search for charge pump on the internet you get bombarded with "voltage multipliers" named as charge pump, so not easy to find at all.
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