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Archive for the ‘how-to’ Category

Hand soldering a WLCSP package

Wednesday, July 18th, 2018

https://www.youtube.com/watch?v=edERx4x5eY0 MSOP-10 soldering video at mitxela.com: I admit that when I made the video of me soldering an MSOP-10 package, I did it because I needed to use the chip right away, and didn't have time to order a breakout board. But this time, I am just doing this for fun....

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DIY Arduino FM radio

Monday, July 2nd, 2018

Nick over at educ8s.tv shared detailed instructions of how to build this DIY Art Deco style FM Radio project using Arduino: Let’s see what we are going to build today! As you can see, we are going to build an Art Deco style FM radio receiver. The design of this...

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Posted in Arduino, DIY, how-to | 1 Comment »

Bit-bang FTDI USB-to-serial converters to drive SPI devices

Wednesday, June 13th, 2018

Scott W Harden writes , "The FT232 USB-to-serial converter is one of the most commonly-used methods of adding USB functionality to small projects, but recently I found that these chips are capable of sending more than just serial signals. With some creative programming, individual output pins can be big-banged to...

Posted in how-to, techniques | 3 Comments »

An easy way to mount DS18B20 temperature sensors

Tuesday, June 5th, 2018

Matt wrote an article describing a technique he used to mount DS18B20 temperature sensors: One of the biggest advantage of these sensors over I2C sensors, is that you can mount them almost anywhere. That having been said, I’ve never quite managed to come up with an elegant solution, particularly when...

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Posted in how-to, techniques | 2 Comments »

How not to build a semiconductor lapping machine

Tuesday, May 15th, 2018

https://www.youtube.com/watch?v=TcI6T91u3xQ electronupdate writes: One area of silicon reverse engineering which has interested me is the delayering of a chip to see each layer which allows superior visibility into the circuitry. I know of two ways: chemical etch and mechanical means. In this video I try to make a mechanical grinder...

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Negative impedance converters

Wednesday, March 28th, 2018

An article discusses the negative resistance and negative impedance converter from Analog Zoo: “Negative resistance” may seem like a purely academic concept, but can be easily realized in practice with a handful of common components. By adding a single resistor to a standard non-inverting op amp circuit, we can create...

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Reading a VGA monitor’s configuration data with I2C and a PocketBeagle

Tuesday, March 27th, 2018

Ken Shirriff wrote an article showing how to read the monitor's config data using the I2C protocol and a board with an I2C port: Have you ever wondered how your computer knows all the characteristics of your monitor— the supported resolutions, the model, and even the serial number? Most monitors use a...

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Posted in how-to, LCD | No Comments »

BLE Module PCB made with silver paste/laser printer

Tuesday, March 20th, 2018

https://www.youtube.com/watch?v=F9uNdE_027Q NRF52 Bluetooth Low Energy Module PCB using laser printer/silver paste method by Rich Olson. More details at nothinglabs.com.

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Posted in how-to, PCBs | No Comments »

Making YBCO superconductor

Monday, March 5th, 2018

https://www.youtube.com/watch?v=sLFaa6RPJIU This video describes how to make and test your own YBCO superconductor by Ben Krasnow. More info on his blog here.

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Low cost single cell battery pack simulator

Thursday, March 1st, 2018

Mare writes: There are many battery cell simulators available which could simulate battery cell(s). Unfortunately, none is emulating any of the digital protocols used by fuel gauge devices. Optimal solution to efficiently emulate given smart battery pack is to use custom solution based on battery cell simulator and fuel gauge...

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Custom 3D printed magnetic encoder disks for robotics projects

Friday, January 26th, 2018

A how-to on making a custom DIY magnetic disk encoder by Erich Styger: I’m making great progress with the firmware for the new Mini Sumo Robot (see “New Concept for 2018 Mini Sumo Roboter“). The goal is a versatile and low-cost Mini Sumo robot, and the robot comes with the...

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Posted in 3D fabrication, how-to | No Comments »

Programming STM32F103 Blue Pill using USB bootloader and PlatformIO

Monday, January 15th, 2018

Coyt Barringer wrote a post on his blog showing how he program the Blue Pill STM32F103 using USB Bootloader and PlatformIO: This is the infamous Blue Pill board – a $2 ARM STM32F103 development board with all the capabilities of a Teensy 3.x at a fraction of the price of...

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Posted in ARM, how-to | No Comments »

Rework and probe wires for circuit boards

Thursday, November 23rd, 2017

https://www.youtube.com/watch?v=5iNHC9djG2Q Tips & tricks to add probe wires for low-voltage, low-current signals on small fine pitch circuit boards. Via Electronupdate.

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Cheap DIY USB MIDI to CV

Thursday, November 23rd, 2017

A how-to on making a DIY USB MIDI to CV from DIY Synthesizer: This one is simple and does not require any expensive Teensy’s or STM32. It runs on the ATtiny85 using V-USB. The ATtiny is programmed with the Micronucleus bootloader and is firmware upgradeable incircuit. More details at DIY Synthesizer homepage.

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Posted in DIY, how-to | 2 Comments »

Overdrive guitar effects pedal

Friday, November 17th, 2017

Eddie over at Bantam Tools shared detailed instructions of how to build this DIY overdrive effects pedal: This project shows you how to make your very own effects stompbox! We'll go through the steps of downloading the .brd file, loading the file into our software, milling the board on the...

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How to configure I2C sensors with Arduino

Tuesday, November 7th, 2017

Edward Mallon writes: I’ve spent the last year in the ‘uncanny valley’ of the Arduino. That’s the point where you understand the tutorials at Arduino.cc, but still don’t get much from the material on gitHub because trained programmers would never stoop to using the wire.h library when they could just...

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Posted in Arduino, how-to | 1 Comment »

ZX81 internal 16K RAM (reversible version)

Tuesday, October 17th, 2017

Dave Curran wrote a post on his blog showing how he upgrades the ZX81 internal 16K RAM with a reversible version: One of the common issues with the ZX81 is the good old RAM pack wobble. Depending on the state of your edge connectors on your ZX81 and RAM pack,...

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Microcontroller action potential generator

Monday, August 21st, 2017

Scott Harden writes: Here I demonstrate how to use a single microcontroller pin to generate action-potential-like waveforms. The output is similar my fully analog action potential generator circuit, but the waveform here is created in an entirely different way. A microcontroller is at the core of this project and determines...

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Posted in AVR, how-to | 1 Comment »

TTL triggered stimulus generator

Thursday, August 3rd, 2017

Scott Harden has a nice build log on his TTL triggered stimulus generator project: I was presented with a need to rapidly develop a pulse generator to take a TTL input and output a programmable output (for now 0.1 ms pulses at 20 Hz for as long as the input...

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How to: STM32F103C8T6 as an USB device (Virtual serial port / CDC)

Wednesday, June 21st, 2017

https://www.youtube.com/watch?v=YZjnCOun1wU In this video Hugatry shared detailed instructions of how to use the STM32F103C8T6 as an USB device with virtual serial port: Cheap STM32F103C8T6 development board Blue STM32F103C8T6 development boards, also known as "BluePill", are cheap way to get started with 32bit ARM microcontrollers. The STM32 development board can sometimes...

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Posted in how-to, USB | No Comments »

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Recent Comments

  • Dario: Hi, I have a doubt: is it possible configure the FTDI using a I2C and an SPI channels together in the same time? BR Dario
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