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Hack Chat Log transcript, Part 1
Log from X-Rays and High Voltage Hack Chat
Fran PiernasFeb-20 11:50 AM@Jan ohhh right, yes, I have some x-rayed stuff anfractuosityFeb-20 11:51 AMout of interest, do you use lead shielding? JanFeb-20 11:52 AMyeah, that's what I'd like to know as well. and a dosimeter? anfractuosityFeb-20 11:52...

ESP32 Mockup Completed
Log from Terminal-BASIC programmable calculator
Finally got the working mockup running. Currently the hardware includes: ESP32 dev moduleArduino Micro ProSD card readerBW LCD with a software LED controlHardware keyboard (a working mockup so far; the Chinese PCB manufacturer entered wrong delivery...

References
Log from Voight-Kampff Machine
I feel the need to always include a section of any project related to references, including: inspiration, datasheets, application notes. LED Bar Graph Displays:Arduino LED Bar Graph with a 4017 Counter and Potentiometer http://codetronix.com/2011/06/05/arduino-led-bar-graph-with-a-4017-counter-and-potentiometer/Emotion...

Hot Hot (Yushengtech) SMT50 OpenPnP conversion
Details from Hot Hot (Yushengtech) SMT50 OpenPnP conversion
The SMT50 MachineThe guy that sold me the machine agreed to build a suitable shipping crate around it. Normally one would anchor an 80 lb machine to the bottom of the crate with bolts going through the crate frame and the base of the unit. Nope. It was...

Hack Chat Transcript, Part 1
Log from Design for 3D Printing Hack Chat
Dan Maloney12:00 PMOK folks, let's get going! Welcome back to the Hack Chat, sorry for the long absence. I'm Dan, I'll be moderating today along with Dusan as we welcome Eric Utley to talk about design for 3D printing. I saw Eric on much earlier today;...

Hack Chat Transcript, Part 3
Log from High-Speed PCB Design with Bil Herd
Bil Herd1:04 PMI will be talking about PCB fab in the next viddeo. I will try and work in some of these questions into that Bil Herd1:04 PMThanks everyone! Nicolas Tremblay left the room.1:04 PM Bil Herd1:04 PM@frank Give me an hour with ya and...

New power supplies
Log from Hot Hot (Yushengtech) SMT50 OpenPnP conversion
This 48V-12V DC-DC converter handles 10A, pretty sweet, only $17. This will give me a massive regulated 12V supply off the machine's existing massive 48V switcher, which will power the Smoothieboard and any outboard stuff such as the vacuum handling....

Hack Chat Transcript, Part 2
Log from Life at CERN Hack Chat
caladan12:39 PMI think it's C++ on CentOS 7 daniel valuch12:39 PMactually, guess what it was Rosy Schechter12:39 PMHere are the libraries for data analysis: https://root.cern/ daniel valuch12:40 PMwhat was the mean time between failures when LHC started...

Hack Chat Transcript, Part 2
Log from Floppy Interfacing Hack Chat with Adafruit
Will S Merkens12:36 PMI have stuff stored on 8mm tape and it's still readable Nick Tonn12:36 PMWell, i still disagree about the theory that drives are made specific for MFM and fail at GCR. PixelDud12:36 PM@deʃhipu My guess, SSDs. Tom Nardi12:36 PM@deʃhipu...

Hack Chat Transcript, Part 2
Log from X-Rays and High Voltage Hack Chat
guido.giunchiFeb-20 12:21 PMI'm in Italy btw Fran PiernasFeb-20 12:21 PM@guido.giunchi if I don't find something on ebay I usually look for it on aliexpress Fran PiernasFeb-20 12:22 PMIf you guys don't have a microwave transformer, another experiment...

Homemade Successive Approximation Register ADC
Details from Homemade Successive Approximation Register ADC
1. Circuit of the SAR ADC Figure 1 shows the SAR ADC board and Fig. 2 is the schematic. ...

Generating Sine Waves
Log from An Old Fashion Acoustic Modem for the iPhone
Generating Sine WavesWho thought this would be hard?I have spent a week trying to work this out. Here is the pseudo code so far:Calculate the Mark and Space ratios:A= int(Fsample/Fmark+0.5)B= int(Fsample/Fpace+0.5)Find the lowest common multiple N of...

Hack Chat Transcript, Part 3
Log from X-Rays and High Voltage Hack Chat
Fran PiernasFeb-20 12:51 PMthat should work too, however I think that kerosene has shorter chains than mineal oil, so it's more likkely to burn than minearl oil JarrettFeb-20 12:51 PMkerosene does burn, yeah guido.giunchiFeb-20 12:51 PMHow do you measure...

Hack Chat Transcript, Part 1
Log from Aerial Robotics Hack Chat
Dan Maloney12:00 PMWelcome to the Hack Chat everyone, let's get started. I'm Dan, I'll be modding today along with Dusan (I think) as we welcome Nick Rehm to talk about Aerial Robotics. Dusan Petrovic12:00 PMHi Dan! Nick Rehm12:00 PMHey everybody, can...

DSP on 8-bit microcontroller
Details from DSP on 8-bit microcontroller
One of the most demanding applications for fast arithmetic is digital flitering. Atmel application note AVR201 shows how to use the hardware multiplier to make a multiply-and-accumulate operation (MAC). The MAC is the basis for computing the sum of terms...

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