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Post by Marathonman on Mar 10, 2022 18:19:41 GMT -6
Concerning the previous voice activation devices. i am also working with NXP's SLN-LOCAL2-IOT which can be used locally with no internet required like the bull shit Alexa and others that record and store everything you say. by being locally and voice controlled NXP acquiring DSP Company and other allows you to control things with voice not connected to internet which to me is a must for today's Government/Multinational Corporation spying campaign world wide.
I am looking to integrate this with an open source home automation system for a secure solution to automate your home. the connection between your phone and your home will be encrypted of course. then this will and can be connected to sensors of your Figuera device for monitoring.
Regards,
Marathonman
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Post by Marathonman on Apr 16, 2022 17:21:22 GMT -6
Some new information regarding the PWM voice control board I came across. It seems I can not use zero cross Triac for phase control of the circuit. I have to use a random crossing Triac so I changed the id number on the board which has the same pinout as the original which is good. through further testing and completion I will post on this thread.
Regards
Marathonman
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Post by Marathonman on Jun 3, 2022 17:00:51 GMT -6
Concerning my 12/24 volt Duel tracker board. I still haven't sent the board in because of a few changes and attempt to minimize the code needed. looking at the board there are enable pins for each half bridge. since each half work together ie... N/S and E/W there is no need to have four enable pins being coded since one half can not work without the other half. so what that means is the enable pin from N/S are routed together and E/W are routed together simplifying coding to just two enable pins. The PWM will control whether the high or low side is active at any one time. This bridge has overlap protection and programable dead time.
This also frees up two pins on the Teensy to be used for other things possibly.
I have also contacted Skyworks Solutions to see if their chip can be powered by 5 volt and be triggered by the lower voltage 3.3 volt Teensy. the digital input has Logic High Input Threshold at 2 volts but it is better to be safe then sorry burning out the Teensy's I/O. unfortunately they are completely stupid and know nothing about their acquired company Silicon Labs which make the driver chip. so I am waiting for a response from them before I will send in the board because I want this board to be perfect unlike the flood of shit on the market from CHINA.
I have spent a lot of time on this project and want it to surpass EVERYTHING available because it will have my name on it.
Regards,
Marathonman
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Post by Marathonman on Aug 10, 2022 14:48:57 GMT -6
Seems Shyworks is a BS company with their tech support almost non existent. I have not had one email in well over a month. I am really fed up with these multinational companies that care only for the big guys. Funny us little guys are the ones changing the world for the best and them the opposite.
I will test them and post the results and probably burn shit up.
Regards,
Marathonman
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Post by Marathonman on Sept 13, 2022 9:39:01 GMT -6
SO upon further research i found that all ttl compatible devices can be used with lower voltage 3.3 volt devices. Like for instance my shift registers I use for my Teensy are ttl compatible yet powered with 5 volts and logic high is 2 volts. All ttl devices that have a logic high I/O at 2 volts can be used with a MCU of 3.3 volts. In my solar tracker I am using a LoRa E220-900T30D for communication that is suggested to use 5 volt power supply. The chip inside the LoRa has I/O's that are 3.3 volts so YES! i can connect to the 3.3 volt Teensy 4.1 I/O's and be just fine as the spec sheet says I/O at 3.3 volts. SO what does this mean, that all i need for level translation is for my 5 volt sensors which i need 6 of them so for that I will use the 74HCT245 bidirectional level shifter connected on top of the Teensy 4.1 with a daughter breakout board that has the sensor connections and the Ebyte LoRa device. Or just look for 3.3 v sensors or at least compatible.
EDIT; Concerning the voltage on the LoRa, it seems that running the LoRa board at 5 volts has no significant gains what so ever and produces a lot more needless heat. So my suggestion is to NOT run it at 5 volts rather 3.3 volts just like the I/O's are at. On my breakout board I used a 3.3 volt 1 amp LDO just for the LoRa it self. the 5 volt LDO on the H Bridge board is 3 amp capable so all is good there.
Regards, Marathonman |
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Post by Marathonman on Sept 21, 2022 14:22:14 GMT -6
Trying to secure a few jobs to continue my research on the Figuera device but in the mean time I finished the daughter board for the Duel H Bridge board. The daughter board will house the LoRa and sensor connections but I am revising the sensors. If you look at the daughter board second pic you will notice two spots for a LoRa. one is for the 22D and the other is longer the 30D which is longer wireless range. This is powered through the teensy 5 volt pin supply on the H bridge board.    Regards, Marathonman |
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Post by Marathonman on Sept 21, 2022 14:34:47 GMT -6
Here is a little extra shit i do. Designed a Teesny 4.1 breakout board that has a RJ45 Ethernet and a USB together. The ribbon cable will connect to the Teensy to this board that is capable of being attached in a box or a panel. 
EDIT; If anyone wants this Gerber file just let me know and I will post it.
Regards, Marathonman |
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Post by Marathonman on Jan 21, 2023 8:57:02 GMT -6
I am purchasing a flux core welder in the next few days so I can finish my electric four wheel buggy I am building. The battery is made from 60280 cells at a rate of 48 volts at 57 ah. The buggy will have duel shocks on the hinged rear with two seats for passengers. I also have hydraulic brakes and twist grip throttle. I will post some pics later as I will be rolling on white three spoke 29 inch rims which will look good on a flat black frame.
All in all it has been fun doing this project but the next one I will use aluminum instead of metal tubing.
Regards,
Marathonman
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Post by Marathonman on Feb 22, 2023 12:30:03 GMT -6
I will be moving the general electronic discussions to their own thread as to not clutter up this thread with useless chatter. I am to blame for that so it will be changed.
In the mean time here is my new flux core welder.
I also bought the Aluminum spool gun for my aluminum projects in the future. My electric cart will be aluminum frame next time lol!
Regards, Marathonman
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Post by Marathonman on Feb 27, 2023 19:04:50 GMT -6
I just want to tell you about a little gem I found, the Micrel MIC5019 low voltage charge pump driver. Sounds like something from McDonald right?. This chip can be a life saver when switching higher loads then say a 3.3v Teensy. While in the high position it will only supply 16 volts max to the gate of a enhanced Mosfet which is a regular Mosfet not the low gate drive Modfets for digital interface.
That isn't the best part. The best part is when used as a low side driver it can drive regular enhanced Mosfets with very high voltage capabilities. With a voltage of just 9 volts the charge pump can supply the enhanced Mosfet gate with 16 volts which is plenty enough to saturate the gate full on.
Applications
* Load Switch * Solenoid Driver * Motor Driver
Talk about the little chip that could lol!. The only negative I see is it is small, like QFN small. At my age I need lots of MAGNIFICATION 
AT only 1 dollar a piece I see this as money well spent and I hope anyone that visits can use it as I sure will.
Regards, Marathonman
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Post by Marathonman on May 7, 2023 21:10:50 GMT -6
Worked on a ATX breakout board today. I need a breakout that can handle some amps unlike a lot of designs that are out there. This handles 20 amp on all legs fused with automotive fuses. Also there is a load resistor that keeps the supply alive so I am thinking about changing the power on slid switch on the left to a latching push button like on my computer. The load resistor present will keep it active with or without a load present. The power resistor are noted on the side as to the proper resistor for the 12 volt and the 5 volt line. The reason I did this is because some power supplies need a load on the 12 volt line and some need it on the 5 volt line to easily solved with a switch on the power resistor. All in all it looks very good I think and if anyone wants the PCB just ask for the gerber file.  Having a hard time finding the Binding post 3D model both red and black posts which mind you handle 30 amp each. Each of the different voltages has its own layer that is why it can handle so much amperage 3.3v top, 5v second,12v third and ground/com/current the bottom layer. I added the 4x4 pin CPU connector because it has 4 12 volt lines and 4 ground lines. Without it I didn't feel good about only having two lines for the 12v pulling 20 amps so I added it. If you ask me this is by far the best one on the net adding USB charging as well.
Regards, Marathonman
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Post by Marathonman on May 8, 2023 10:59:57 GMT -6
I finally found the 30 amp binding posts 3D file but no black  well at least they look good. Will send off to production withing the next few days. Please tell me what you think about my ATX breakout board? And yes the real binding posts are black and red.
This board will last a life time, well at least mine lol! This board was ment for an ATX of at least 500 watts and above and I just so happen to have a spare 750 watt ATX in the closet. Some power supplies work without the resistor but most will be unstable as the sensor line will show an open load and fluctuate. The power load resistor is there for stability and to keep the supply active. Trust me it is there for a reason with a switch to choose from a 12 volt or a 5 volt line load which do vary from manufactures. Some use 5 volt line and some use the 12 volt line so don't worry, I have you covered lol!
The only lines needed from the ATX power supply is the 24 pin and the 4x4 CPU connector. The rest can be cut off or neatly tucked away. Luckily for me my 750 is modular so all I have is those two plugged in.
EDIT; Noticed the pads for the 4x4 CPU connector were not showing when in full board 3D view, weird that those settings about the pads were off. Just fixed it.
Regards, Marathonman
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Post by Marathonman on May 9, 2023 12:48:42 GMT -6
Talk about hilarious, I was looking at my ATX breakout board thinking to myself this is a really good board design when I realized the binding posts 3D file was not at 100% view. It was set on like .18 or something there of so when I put it to 100% the binding posts were like placing the statue of Liberty on my board.  OMG I laughed my ass off for hours then realizing I had to redesign the lower half of the board to accommodate the very large plugs   The Binding posts can handle 30 amp as well as the fuse holders so in all actuality it can handle 30 amp but I am setting the fuses to 20 amp and the label also.
So here is my redesign of the board which by the way is probably the most heavy duty on the net bar none. If you need a bad ass board and a LOOOOT of power then this is your board.
They are going to be sent off for production and I have the parts already waiting for assembly. they arrived yesterday! EDIT; Added a optional adjustable small fan and fan header for the power resistor
A matter of fact I called out a guy pushing and inferior ATX breakout board on PCBway not long ago saving some poor unsuspecting patron. I called him out on his trace width as he stated it could handle like 15 or 20 amps, In reality it could only handle less than 5 amp. I am so sick and tired or these greedy people misrepresenting their products. Just look at my board, this is for some serious DIY'ers out there that need a real power supply not some solder covered crappy thin trace.
I will have these boards for sale shortly
Regards, Marathonman
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Post by Marathonman on May 11, 2023 16:41:15 GMT -6
I was going to order the board but unfortunately they want to charge and engineering few of 25 dollars which pisses me off. So in order to bring the cost down per board I have to order more which then brings me to having to wait until the first of June money wise. JLC sucks in this aspect that anything over 3.9 inches gets socked with a 25 dollar engineering fee so in order to compensate I have to order more boards to absorb the cost. PCBWay wanted way to much right from the start so they are out as is any US greedy companies. So now this project is on hold again.
Regards, Marathonman
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Post by Marathonman on May 13, 2023 13:44:37 GMT -6
The reason why I need this is because I can not even count how many times I needed a power supply with different voltages. Like with powering a motor with 12 volts and either 5 or 3.3 volts for the electronic switching. To many times and I don't have a power supply to accommodate that. Well I will with this board but needing a boost converter for higher voltages which i already have. Plus this thing can handle so many amps it will be very useful in my lab with two power supplies on each end if the lab lol!
Something like this is indispensable in a research lab environment in my opinion. Also here is an added bonus that can be added to this and any project with different voltages. A three way switch is added to the volt sense line giving you the ability to sense how ever many volt lines you have. Here there are three to match my power supply breakout board.
Nifty little trick huh!, and so easy to implement. Now you can monitor all three lines with one meter, how cool is that?
Regards, Marathonman
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well at least they look good. Will send off to production withing the next few days. Please tell me what you think about my ATX breakout board? And yes the real binding posts are black and red.
OMG I laughed my ass off for hours then realizing I had to redesign the lower half of the board to accommodate the very large plugs 
The Binding posts can handle 30 amp as well as the fuse holders so in all actuality it can handle 30 amp but I am setting the fuses to 20 amp and the label also.
