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Author Topic: CFX fw.dat  (Read 1532 times)

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Offline mech65

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Re: CFX fw.dat
« Reply #15 on: October 07, 2020, 05:42:49 AM »
Last night I resoldered the switch and ground pads. Checked the wires and switches for momentary continuity. They look good. Also moved the positive wire for the blade as far away as I could from the switch wires. Replaced the sd card and pulled the kill key. The board boots up fine and everything works great. Then I plug the blade in and ignite it. The board locks up again and the bladeignites and retracts by itself before refusing to do anything else. What should I check next?
« Last Edit: October 21, 2020, 04:49:57 PM by mech65 »

Offline erv

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Re: CFX fw.dat
« Reply #16 on: October 07, 2020, 06:12:46 AM »
please post a video

if the blade locks up (like engaging aux to do a lockup) you're getting current induction into your switch circuit from the blade power. Make sure you use a dedicated low power ground / negative wire for the switch circuit

Offline mech65

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Re: CFX fw.dat
« Reply #17 on: October 07, 2020, 06:34:04 AM »
Sorry, what I meant by lock up was the board is non responsive. I have the ground wires going to the ground pad according to to the wiring schematic. Everything worked until I plugged the blade in. What is “pudis=1”

Offline erv

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Re: CFX fw.dat
« Reply #18 on: October 07, 2020, 06:42:04 AM »
pullup disable

Offline mech65

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Re: CFX fw.dat
« Reply #19 on: October 07, 2020, 07:13:48 AM »
What does pull up disable mean? Where is it located?

Offline EXAR KUN

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Re: CFX fw.dat
« Reply #20 on: October 07, 2020, 09:48:13 AM »
I think this is a good article on it:

Disable pull-up/pull-down resistors? - Getting Started - Particle

I'd also check your blade wiring and emitter PCB wiring. A stray wire hair can cause serious implications in Neopixel.



Offline mech65

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Re: CFX fw.dat
« Reply #21 on: October 07, 2020, 02:22:28 PM »
Thanks Exar Kun, I am getting down to completely desoldering everything and staring over. Can’t figure out why it worked great in the beginning and degraded over time to where I am now. I am reading the link you sent me, I will have to read a few more times to digest the info, I have been an Industrial Mechanic all my life and am lacking in electronics. Thanks again.

Offline mech65

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Re: CFX fw.dat
« Reply #22 on: October 08, 2020, 05:20:18 AM »
Last night I removed all the switch and ground wires from the board again. This time I used a jumper to go from the act. pad to the ground pad and the same for the aux. pad. With the blade plugged in everything is working great. Even though the wiring for the switches looked good something must be wrong to cause all the errors and spontaneous ignitions. I will replace all the switch wiring and the switches and go from there.

Offline erv

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Re: CFX fw.dat
« Reply #23 on: October 08, 2020, 05:26:49 AM »
before doing so, measure the voltage on your (bare) switch pads

Offline mech65

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Re: CFX fw.dat
« Reply #24 on: October 08, 2020, 01:06:29 PM »
Sd card removed
Aux. 3.2vdc
Act. 3.14vdc

Sd card installed
Aux. 3.18vdc
Act. 3.17vdc

Offline scott

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Re: CFX fw.dat
« Reply #25 on: October 08, 2020, 07:57:38 PM »
Can you send a picture of your board wiring?

Offline mech65

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Re: CFX fw.dat
« Reply #26 on: October 09, 2020, 05:05:03 PM »

Offline scott

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Re: CFX fw.dat
« Reply #27 on: October 09, 2020, 06:27:09 PM »
Can we see the other side as well?

Always tough to see in pics, but I have seen a lot of issues where flux is causing shorts. Tough to see the clean margins between pads, but def make sure there is clean clearance between all pads...looks close between speaker pads and +\-, although if they were connected you would have bigger issues.

Asked about the other side as I am not sure what you meant by jumping between switches and ground. If you just mean combining the ground wires from both switches, cool.

Offline EXAR KUN

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Re: CFX fw.dat
« Reply #28 on: October 09, 2020, 09:57:41 PM »
Is your ground pad gone on this side?



Offline bombarta

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Re: CFX fw.dat
« Reply #29 on: October 10, 2020, 02:42:43 AM »
Battery ground does not look right to me, far too much solder at either side of the data pad too. The data wire does not need to be so large as there's very little current running through it.
I take it the data wire or the blade has got the appropriate resistor fitted for NeoPixel? Sorry if you already answered that one.
I don't know, i gotta bad feeling about this!