Dave compares the FFT modes on 7 different oscilloscopes:
Rohde & Schwarz HMO1202 Series
Tektronix MDO3000
Keysight 3000X Touch
Lecroy WaveJet 354 Touch
GW Instek GDS-1104B
Rigol DS1054Z
Rigol DS2000
Which is the best?
Which one sucks the most?
Forum HERE
David tells us how he designed his rPrint 3D printer. A university project he has been working on for the last 9 months.
Everything is custom, including the world’s lightest weight direct drive extruder head, Sarrus linkage build plate, linear rail guides, and his awesome bubble enclosure.
Not to mention his own custom controller, gcode interpreter, and highly optimised C++ string libraries.
Forum HERE
Inside the Rohde & Schwarz HMO1202 series HMO1232 300MHz mixed signal oscilloscope.
Hands on video with the HMO1002
Forum HERE
Factory 3D tour
ADC08D1000
PMH6518 PGA
ADCMP562 Comparator
Papst Fan
Atmel SAMA5 ARM Cortext A5
LVDS LCD driver
Teardown Photos:
Dave and David2 battle to get an old Microchip PICkit 3 working with MPLAB X talking to Dave’s new product.
A tale of misery, rabbit holes, Murphy, facepalms, and ultimately success. You get a warts and all journey.
A good example of how a tool that should have just worked, turned into a nightmare due to some bad luck and poor tool protocol and mode compatibility.
Forum HERE
New 2016 Mailbag Bonanza with Sagan helping out.
Forum HERE
SPOILERS:
A Kollsman Instruments MD-1 Automatic Astro inertial navigation system analog computer for a B-52 Stratofortress bomber!
Article on the system HERE
From The Geek Group
Realistic CB Radio teardown and testing with a spectrum analyser.
Silicon Labs Sensor Puck Bluetooth heart rate monitor demo board
WinnerGear MicFlip Reversible Micro USB cable
It was an Indiegogo
Jack Ganssle
RFT EO213 East Germany Analog Oscilloscope Teardown
iRiver MP3 Player Teardown
Telstra T-Box Remote control version oddity.
Dave reverse engineers the XuanZu X2-U808 Hi-Fi Headphone Amplifier to see if the valves actually do anything.
What is the circuit topology?
E180F (6J9) pentode valve datasheet
Doug Ford’s Microphone design series Playlist
Reverse Engineering How-To video
Forum HERE
Franky from the Ebay store 99centHobbies dropped by the lab and we had a quick chat about ebay, selling, shipping, and the Hong Kong electronics scene compared to Shenzhen China.
Forum HERE
Part 2 of an impromptu play with Dave’s Wekomm 10K Transfer Resistance Standard.
Was the Keithley DMM7510 multimeter the culprit in the discrepancy in the thermal response?
Dave finds out with the help of a thermal chamber.
Part 1 is HERE
Forum HERE
An impromptu play with Dave’s Wekomm 10K Transfer Resistance Standard.
What is the strange discrepancy in drift on the graph on the Keithley DMM7510 multimeter?
This is Part 1, don’t forget Part 2 is here: https://www.youtube.com/watch?v=gEDs0OtOkGE
Forum HERE
Christmas Mailbag!
Warning:
Someone thinks atheist Dave won’t get saved by Jesus, so tries to convert him to Christianity!
Forum HERE
SPOILERS:
Sam Harris destroys christianity VIDEO
Tandy PC-6 Pocket Computer
Service Manual HERE
Silego GreenPAK4 Mixed Signal Development Kit
Isolated USB to RS422/RS485 converter board. The isoUSBRS422
Vintage components
Airbag system car occupant sensor.
An audiophool valve Hi-Fi headphone amplifier
In this Fundamental Friday Dave will blow your mind as he shows you how you can power a microcontroller *without* a power or ground pin!
A potentially big trap for young and old players alike.
Can you guess how it’s done before the secret is revealed?
SPOILER:
A tutorial on how ESD protection diodes in chips work and how they can be used, mostly inadvertently to power a chip through the input and output pins without having the power or ground pin connected.
This example uses an MSP430 microcontroller, but is applicable to almost any complex or simple CMOS chip.
Inside the Siglent SPD3303X Precision Programmable DC Lab Power Supply.
UPDATE: There is an even cheaper version, the SPD3303X-E which has 10mV/10mA resolution.
Atten PSU teardown video.
Rigol DP832 teardown video.
Forum HERE
More Mailbag Monday.
Forum HERE
SPOILERS:
RemoteBoot Kickstarter
Digilent PowerBric
Arty Artix-7 FPGA Development Board
