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BrendaEM
United States
Приєднався 2 лис 2016
BrendaEM's Geek Oriented Project Channel.
Here you will find an assortment of projects and interests.
For those who would like to help me continue making content, here is my Patreon Page: www.patreon.com/brendaem
(The information is presented here in a journalistic intention, so if you make or modify anything , you do so at your own risk. Please be careful, with electricity and tools.)
All videos, sounds, and music are Copyright by me, BrendaEM, with all rights reserved.
Here you will find an assortment of projects and interests.
For those who would like to help me continue making content, here is my Patreon Page: www.patreon.com/brendaem
(The information is presented here in a journalistic intention, so if you make or modify anything , you do so at your own risk. Please be careful, with electricity and tools.)
All videos, sounds, and music are Copyright by me, BrendaEM, with all rights reserved.
The Big Personal TMI Video - Why I Haven't Made Many Videos Lately
In this video: Following the proud, paradoxical youtube tradition, this is a video explaining why I haven't made videos. Please skip if you are sensitive.
Please Donate to: www.rainn.org/
Sorry about the poor quality. I don't know if I could do this again, and it was a miracle that I hit as many points as I did.
Also, for tramma and dissociation, www.sidran.org/ seems to help people, too.
Please Donate to: www.rainn.org/
Sorry about the poor quality. I don't know if I could do this again, and it was a miracle that I hit as many points as I did.
Also, for tramma and dissociation, www.sidran.org/ seems to help people, too.
Переглядів: 901
Відео
Tandy Color Computer 3 - Triad 512K - Coco-SDC - SCART - OS9 Fun
Переглядів 2,4 тис.2 роки тому
[I am sorry that I haven't posted a video in a long time. I have had serious health issues and real-life problems.] In this video, we do some retro-computing with an 1987 Tandy Color Computer 3, computer affectionately known as a CoCo 3. The machine is upgraded to 512k, with a Triad Memory Upgrade: www.frontiernet.net/~mmarlette/Cloud-9/Hardware/512K.html If at some point get a Hakko Desolderin...
Hakko FX-888D Soldering Station Unboxing and Review
Переглядів 6 тис.3 роки тому
In this video, we take a look at the Hakko FX-888D soldering station, both an unboxing and a review. Note: The model I have came with accessory tips, which may not be included in all packages. Please support my projects by Patreon: www.patreon.com/brendaem And please watch some videos, to get this channel monetized.
These Old Power Supplies - Part 1?
Переглядів 3953 роки тому
In this video: we look at, test, and re-purpose/reuse old power supplies for electronics experimentation use. We look at a cellphone charger, hard drive case, and two other power supplies including a old Lambda, and an Elco power supply from Japan. Kerry Wong's UA-cam Channel:ua-cam.com/users/KerryWongBlog I am sorry about the video noise/graininess. I have only a cellphone to shoot video with,...
Naughty (Screwdriver) Bits!
Переглядів 4073 роки тому
In this video: We construct simple wood block holders for our assorted naughty screwdriver bits. The templates may be found here: www.thingiverse.com/thing:4579039 The drill bits used are: 3/16" and 9/32" the wood is about 1" thick. After the finish is applied, the bits may be loosened by placing a bit backwards into a variable speed drill, and slowly running the holes through. Please support m...
Siglent 2042x 40Mhz/25Mhz Function Generator Unboxing and Review
Переглядів 2,8 тис.4 роки тому
In this video: An Siglent SGD 2042x is reviewed. We give it an unboxing. The user interface is shown, and an audio file is converter for ARB (Arbitrary) waveform use. This is my own purchased product. Correction: One of my sharp viewers, qwaqwa1960, has pointed out that setting the 50ohm setting on the SDG2042x does not affect the impedance, but only the output reading, which means that during ...
3D Printable Modular Optical Breadboard
Переглядів 2,1 тис.4 роки тому
In this video, a 3D optical breadboard is shown. The breadboard design can be downloaded and printed on most 3D printers. Printing with PLA works well for this. This nozzle should be .4mm or smaller sized one to have enough resolution to make the print well. This is a medium-long print. Please print safe, and don't print unattended. 3D Printable Optical Breadboard: www.thingiverse.com/thing:189...
Noctua NH-C14S CPU Cooler Unboxing, Review, and Build
Переглядів 4,1 тис.4 роки тому
In this video, we unbox a Noctua NH-C14S CPU cooler, review it, and install it on a AMD 3900x, in a rack-mount case. The other components are a MSI MEG Ace x570 motherboard, and a Corsair HX850 Power Supply. The audio still needs work. Yes, I would gladly accept a donation for a wireless lapel microphone. Please support my projects by Patreon: www.patreon.com/brendaem And watch some videos, to ...
AMD 3900x - MSI Ace x570 - HX850 - Rackmount Rebuild
Переглядів 7274 роки тому
In this video, a 4-space Rackmount case is fitted with an AMD 3900, a MSI Meg Ace x570 Motherboard, and a Corsair HX570 Power Supply. The memory is Corsair Vengeance LPX 32GB. NF-A12x25 The Fans are Noctua NF-A12x25. I've tried to include some beginner computer building tips. The audio still needs work, but wireless mics are spendy. Please support my projects by Patreon: www.patreon.com/brendae...
MSI MEG Ace AMD x570 Motherboard Unboxing
Переглядів 4174 роки тому
In this video, a MSI MEG Ace x570 motherboard for AMD Ryzen processors is unboxed, and looked at. I've been using this motherboard for a week now, in my own ( upcoming ) build. It's working well. Please support my projects by Patreon: www.patreon.com/brendaem Or watch some videos, to get this channel monitized.
Corsair HX850 Platinum Power Supply Unboxing
Переглядів 5 тис.4 роки тому
In this video, we take a quick look at a Corsair HX850 power supply. In an upcoming video, I will use this power supply in my computer build. This is my own power supply. Please support my projects by Patreon: www.patreon.com/brendaem
Shop Update 01
Переглядів 1,3 тис.4 роки тому
In this video, we see the new shop, also known as the "Wreck Room." I live on a fixed low income. In the North SF Bay area, support, representation, and housing for low-income people is sparce. Please support my projects by Patreon: www.patreon.com/brendaem If all of my subscribers watched an hour of my other videos, this channel would be monitized.
1-Micron Wafer Inspection Microscope Axis Teardown
Переглядів 1,5 тис.5 років тому
In this video, we will look at an old wafer-inspection microscope axis, which likely has an accuracy better than 1 micron. The axis has an interesting mechanism to increase it's precision. which could be implemented in larger CNC machines. I was over 90 degrees when I shot this, so please, go easy on me. I am sorry about the production values, but I am in the process of moving, and it's not goo...
3D Interference Scanner 02 - Using One Micron Axis
Переглядів 7075 років тому
In this video, a 2nd version of an experimental scanner that shows the interference and diffraction from monochromatic laser light is shown. The axis used is an old wafer-fabrication microscope axis, which (I think) had a resolution of 0.0003125mm or (half of that). When it was reworked, it was changed to .001mm on single-step, or .0005 on microstep, given the Vexta control setting. The device ...
Saturday Afternoon - Windshield Chip Repair
Переглядів 2485 років тому
In this video, I bring you along to fix windshield star or bullseye using a repair kit. For those who would like to support my projects, here is my Patreon Page: www.patreon.com/brendaem
Ultrasonic / Silent-Wave Motor Teardown
Переглядів 7 тис.5 років тому
Ultrasonic / Silent-Wave Motor Teardown
Teardown - Logitech C905 - Cheap Webcams for Projects
Переглядів 3,9 тис.5 років тому
Teardown - Logitech C905 - Cheap Webcams for Projects
Arduino and Oscilloscope Latency-Glitch Fun
Переглядів 5095 років тому
Arduino and Oscilloscope Latency-Glitch Fun
Geeetech MK8 Dual-Extruder Height Mod
Переглядів 2,3 тис.5 років тому
Geeetech MK8 Dual-Extruder Height Mod
Recycled CNC Project - Part 07 - Cooling Upgrade and Accessories
Переглядів 5655 років тому
Recycled CNC Project - Part 07 - Cooling Upgrade and Accessories
Rant - Neodymium Magnets - Demanufacturing
Переглядів 1,5 тис.5 років тому
Rant - Neodymium Magnets - Demanufacturing
Recycled CNC Project - Part 06 - Finished!
Переглядів 7716 років тому
Recycled CNC Project - Part 06 - Finished!
Large 3D Under-Gantry Printer Build Part 02
Переглядів 6046 років тому
Large 3D Under-Gantry Printer Build Part 02
Recycled CNC Part 05 - Wiring and LinuxCNC
Переглядів 3,4 тис.6 років тому
Recycled CNC Part 05 - Wiring and LinuxCNC
Recycled CNC Part 04 - Building the Gantry
Переглядів 1,1 тис.6 років тому
Recycled CNC Part 04 - Building the Gantry
Recycled CNC Part 03 - Fitting the Ballscrews and Gantry Bottom
Переглядів 6176 років тому
Recycled CNC Part 03 - Fitting the Ballscrews and Gantry Bottom
Recycled CNC Part 02 - Connecting Y-Axis Rails - Narrowing X-Axis
Переглядів 1,6 тис.6 років тому
Recycled CNC Part 02 - Connecting Y-Axis Rails - Narrowing X-Axis
I have NO idea how many CNC users out there have familiarity (let alone expertise) with GUI programming. I can tell you full stop - this would be an unbelievable amount of code development to undertake. Excellent thought and considerations were put into the design elements to be sure! I edited my comment once I realize it was only an SVG presentation and not the actual GUI as I thought Brenda had written the GUI but it was just not operational yet. I would also like to add that my 30+ years of experience with programmers has shown me that this level of "usage" consideration is rare as often times the developer forgets that the end user cannot possibly know what the dev was thinking at the time and instead can only work with "what is" so GUIs can be very non-intuitive and difficult for the end user.
thats stupid. If you show 10 things on the screen , why needed to use 1 , you have 9 times more pobalilities to make errors , and the cnc machines dont forgive that.
i think most of those fringes you are seeing are possibly just noise from the laser itself that needs to be cleaned and not interference
so what size are these holes? you said around 0.004" hmm so that is like around 100 microns for me i used the concave end of soda cans, cut them out and put my pin holes through their center using a needle and the best i achieved was roughly measured at 400 microns, some other guy said he made 50 and 34 micron which i really doubt as you would need laser to even get close and you would not even be able to see it under a magnifying lens, what project you doing with this interference pattern?
Hey Brenda, hope you are doing well! Found your channel while doing some research on the CoCo3. Great content, hoping you get the chance to return as you cover some great topics with solid information!
If you leave holes through the build, you could add a threaded bar right through. That would bind the various parts together, and add additional strength. I'm not sure if the differential thermal expansion would be an issue.
Is it fast though? You didn't even speed test it. 🙄
No you do not replace the gime chip to use 2 megs there is just a bit of extra circuits added around the CPU to extend the gime's original MMU from 6 to 8 bits the current way of doing this is with a special version of the Protector. I am not sure if this is needed if it is a GIME-X .
I took electrical engineering courses back in the day. I'm thinking about getting a function generator, but I don't know if I want what you have or the SDG1032x. I don't care for the touchscreen and yours offers 16-bit instead of the 14-bit. But would I really need the extra 2? The cost difference is about $140. Can you tell me more of why you choose yours over the cheaper one? Thanks
Another option is the buy one of those monitor risers with holes through them.
I just found your channel, but I really hope you're hanging in there and I'll get to see more of your awesome projects in the future!
Take a Look at EdingCNC or a Professional CNC Control like Heidenhain..and start over..
@@BrendaEM What i'm seeing here is just like a Haas CNC, or Mach3 control.. the literally cluttered with buttons.. Heidenhain, Fanuc, Mitsubishi, Fagor, and many other CNC Controls have "Function keys" Softkeys, the function depends on the menu you're currently in.. saves a lot of Screenspace.. and.. Why on earth would one need a Graphical Display when milling or turning?.. You only need it for programming or program checking.. after that.. why show it?.. Just look into the machine.. if you are there.. Most of the time, basically always.. i hit start, and do something else.. what would i care about a Graphical screen?.. Ok.. my CNC Control (EdingCNC ) has that, but.. i rarely look at that when the machine is running.. because i only return to a machine when it is finished..
Gently rub that smog with a pencil eraser , I have a Co-Co 3 and that is how I know a pencil eraser works .
Thank a lot!!!
Brenda where can I get this done? I have no desire to do it myself…
Mine is in the shop right now 🤞
Can you do a video showing how you build the RGB to SCART cable?
Democrats have a poor track record of treating living beings....unless you can vote for them.
I Whish that you was living in Denmark. A lot of things are a lot easier here
@@dannyg.1562 But you get help if you cant get a job or if you cant work. Hospitals are free
Take care Brenda, hang in there.
When I had my collapse lung, and they went to re-inflate it, I had such a bad panic attack on the table. They knocked me out with ketamine, so I did not feel the pain of the actual procedure… But having suffered a collapsed , long myself, I definitely know how terrifying that whole processes. I’m so sorry sweetie.
I didn't know you collapsed your lung. It's also the tall-wasted people. (nodding) Clips?
@@BrendaEM Siri likes to make avante-garde poetry out of my dictation - edited
there is a Y adapter that goes to one sata power cable instead of 2 molex connecters. Startech ships with the Y cable. Sure you could pick one up. The LED lights on the front are nice when u hook them up.
Hey Brenda - I sent a wifi router to you at Campbell Coffee Shop on April 10th 2023 to simply plug in and use at Campbell coffee shop. Hope you are doing OK
Hi Branda i wounder where you got all the nerdiness from "i know that is not a word" ;)
Осень круто!!! Я тоже такой хочу. Ты делаешь большую работу. Спасибо. Я надеюсь это открытый проект.
Being too paranoid about lithium ion batteries. I get lots of these from portable oxygen concentrators, which are high current output to run little compressors. Never a problem being jostled, ect.. (at least these ones).
2 years later and how is it holding up, do you like it? I picked one of these up a little while ago when my trusty 20 year + Weller WTCPT took a crap on me in the middle of a job. Time was of the essence and I was unable to get a replacement Weller so I (reluctantly) settled on the Hakko. Overall its a good unit but I`ve been a Weller guy since the mid `70s. I think Ill repair mine and have the 2 stations in my arsenal.
So far, except for the sponge, it has been a good soldering station. The tip selection is a bit strange. I have done everything from surface mount to soldering grounds on potentiometers. The heat recovery is really good, as the other reviews had said. The sponge tore, as I thought it would. Also it's fussy to use. The standard general purpose tip is just a bit larger than the old Weller station, I used.
Looks Great. Is there any more progress on this? I'm on GMOCCAPY but although functional, could do with GUI improvements.
I am not sure. I had a bad time on LinuxCNC's forum. I saw them working on something. I felt that GMOCCAPY was a brilliant effort. I had just tried to expand on it, as well as "Axis." I had tried to merge the two together.
Thanks Brenda for a very informative video. I think your SDC case is brilliant! Since the SDC is a drive emulator, it only makes sense that the case should look like a classic drive controller. And the ease of access to get the SDC in or out with your vent plate is terrific - it completely negates the need for the ugly DIP switch hole I've seen in other 'sealed' cases (seriously, how often do people need to reset those switches?). I'll certainly be using your design for my SDC when I get one!
Do you know why and how these motors fail?
Configuring preset modes is so so simple. There are vids on youtube showing how. In one minute i had my two presets with my favorite temperatures ready to work. Nice station!!!
Look into CRC256...you can get it at home depot...it is an electrical lubricant and works wonders for dirty pots...used it in my Tubeworks stuff and it not only cleaned up the scratch but has continued to keep them scratchy free for 10+ years.
I am drinking hot cocoa while watch your CoCo video lol. I learned to program machine code on a OG silver CoCo that I piggybacked the RAM to 32k. Using a hex editor, I wrote some pretty cool stuff. I guess this was 1982 or so and was my beginning into computers.
I remember people piggybacking RAM. Oddly, I have only seen perhaps one silver CoCo in person. I had and want to get a CoCo 2, late model Korean (south, I hope)
@@BrendaEM After the 32k upgrade, I would type in games from Dragon User magazine for the 64k and trim them down until they would run. Great fun and challenging!
It looks like a very accurate stepper motor..
That unused power cord knockout is apparently for 50Hz models, fyi. ✌️
After 35 years, I have my answer : ) Thanks!
Some of those Vexta stepper drivers have a internal switch to change to step/direction instead of forward reverse. I think mine were UDX or something like that.
You don't say!!! I looked through whatever documentation I could find for them, but didn't notice anything. I had a driver apart, but I was afraid to touch anything--except for the heat-sink grease. I am going to open one and have a look, as I was going to use some gates or an Arduino to convert them for some uses. They have been very reliable, though I could never get them to go to sleep. Perhaps the voltage needs to be higher. It looks like they have 2 different kind of opto-couplers in them. I just though the others went bad, over time. They are otherwise were great motors! I have about 8 harmonic drives, and 2 big ones, and smaller ones, and one small enough to use for an extruder for a 3D printer. I also have a few 1000-step/rev motors, like on my linear 1-micron axis. I took a medium-small harmonic drive apart. ua-cam.com/video/02wR0U_7SfM/v-deo.html
There is no replacement for the GIME chip. In fact no one knows exactly what is IN a GIME chip but someone is working to duplicate the functions of the GIME in a project called "GIME X" or maybe "X GIME", not sure of the exact name. However, if you are going to put 2 megabytes in a CoCo3 you need the "Protector". The purpose of the Protector if to supply protection to our aging 6809 / 6309 CPUs so that power and level fluctuations can not overload and damage the CPU. The second benefit is that the Protector sits in the CPU Socket and provides access to the signals needed for the 2 Meg upgrade. Since the CPU must be plucked from the CoCo to install the Protector, might as well add a 6309 to replace the 6809. The 6309 runs ALL 6809 code, but also can run in either 6809 or 6309 more. When using the full capabilities of the 6309, 6809 code still runs, but now you have access to additional machine language commands, and the machine can perform some functions in fewer clock cycles. Fewer clock cycles can mess some things up like if the software has to access hardware ports, and decreased clock cycles changes the speed the computer access hardware. The hardware might not be ready when the software is, as the software finished and is trying for another hardware access before the hardware can provide it. All of these new 6309 features speed up the machine even without changing the clock speed. Also if you do not mind readjusting and tweaking your monitor, you can run the 6309 at speeds closer to 3 megahertz, but again since this throws off the video timing signals you need a monitor that can handle that. Not sure the SCART adapter can. I have seen people speed up a CoCo3 clock speed to 4 megahertz, however this will stain the 6809 (but it has been done) and makes the 6309 work harder, which in the long run will also strain the 6309 more than running at 1 or 2 megahertz. Again speed increases to the CPU speed up all timing signals, and do strain the other chips as well. Changing speeds means the video signals are sped up and no longer work with an unmodified monitor. It is all possible, but it is a lot of work.
I have thought of putting +5vdc on the RGB connector of the CoCo3, you could also disconnect pin 2 from ground to make another usable pin on the connector. You could possibly send composite and +5vdc through the RGB connector, and have a switch hidden in back to switch it back to pin 2 as ground, pin 10 disconnected. Personally I would use pin 2 as +5vdc so that both power pins are together, and composite video on pin 10 since the horizontal sync and vertical sync are already a part of the composite signal and might have less cross-talk issues. After a short section of ribbon, the rest of the cable would be a with multiple shielded conductors, although ground and +5vdc don't need shielding, the rest should in my opinion be shielded from each other and the outside world for the cleanest signal.
I have seen a mod where some added a pin for 5V. I am of it. Yet, I need 5V to run the SCART box.
@@BrendaEM pin 6 is unused, as long as it doesn't need much current. Maybe something from the monitor end is better for power?
We need MORE Brenda videos 🙂
thanks Brenda , for this work ..I just want to know if that code works on Arduino Nano
is there a resistance between terminal on that motor?
The spinning coin analogy was very helpful!
Good evening enjoyed watching your video. I have a question What would a used 602 in good condition be worth in your opinion.
Oh, forgot to mention about BASIC09 assigning 22 bytes for data when you have no DIM statements yet. That's a 22 byte block that every procedure gets to hold special flags, etc. for each procedure (this includes things like whether ON ERROR GOTO is enabled (and what line to go to), whether the program will be BASE 0 or 1, whether you are using Radians or Degrees, and a bunch of pointers local to the process (it's own stack, it's string stack, where it is in the program, etc.)
I bought one last year. They're around $200AUD here. My last small iron was a Scope Minispeed(!) (carbon stub heating element from the 1970s). Despite the presence of both 'Up' & 'Down' buttons on the competitive Weller WE1010, overall I thought this Hakko had several superior features (enough to overlook the cons) - especially the stable stand. Like you, I have little need for password-protected lockout and I might actually use the presets if they were more conveniently accessible.
The original 128K RAM chips are 4464's - these are the chips (used in pairs) to upgrade later Coco 2's to 64K. So you now have two sets of those. :) Also, would love to have you download and install NitrOS-9/EOU, and see what you think of it.
I have used it. Thank you. I like the idea of EOU, but with only 512k, memory is a little tight. Before I bought the Triad, I looked for one of those 2MB upgrades, but didn't find any physical hardware for sale. You have some cool dynamic setup stuff in EoU, which I need to study more. Your Ease-of-Use project is great for the CoCo community! I included a link to it. I am aiming for a large-volume boot that's more minimal, and MV capable (all 15 window descripers.) that's still modern with DriveWire and SDC. [I remember that old Frank Hogg advertisement with 2 of Teac 1.2mb floppies. Someday I will afford them. I had 2 3-1/2 720's on the end of my old FD502.] BTW, commandgen rocks. A good addition for an OS9 system. You probably are aware of it, but it embeds a OS9 (assembly macro?) shell statement into an executable, and adds a CRC, so that one-line shell commands can be loaded into memory.
@@BrendaEM - You still have a fair bit of memory free in an EOU boot (300+K with 3 80 column windows running)... and you can modify the startup file to shrink it down a bit if you want (not preloading all the fonts, etc.). I do remember the shell command "wrapper", although I don't think we currently have it preinstalled on EOU. I still have a 3.5" on one of my Coco's, although I use the special FORMAT command (20 sectors per track vs. the normal 18) so that it has 800K or more per disk. Although I use the SDC in hard drive mode with two 128 MB VHD hard drives running by default.
Trying to find your source files for your user interface. Seems the github page is gone. Trying to figure out this patreon thingy as well.
Many thanks for a very in depth review,
What is the depth witouth the handles? Thank you