Blog

18650 Li ion batteries question

dubbie

I have been gifted a (broken) child's electric tricycle toy. The main problem is that the 6V 4Ah lead acid battery is defective - a collapsed cell I assume. I would like to replace this battery with Li-Ion batteries, specifically the 18650 type. I am...
- 9 Nov 2021
0-30V, 0-7A Adjustable Switching Power Supply [CC-CV, with LED]

Hesam.M

DC to DC buck converters is a famous topology in the electronic and a widely used circuit in electronic devices. A buck converter steps down the input voltage while it increases the output current. In this article/video, I have discussed a DC to DC b...
- 13 Sep 2021
DC to DC Boost Converter using UC3843

Hesam.M

DC to DC converters are quite popular among electronic enthusiasts and are widely used within the industry. There are three major types of non-isolated DC to DC converters: buck, boost, and buck-boost. In this article/video, I used there major compon...
- 26 Jul 2021
Infrared Remote Control Decoder & Switcher Board

Hesam.M

Infrared remote controllers are everywhere around us. The majority of home appliances are controlled using infrared remote controls. In this article/video, we learn to build a device that can decode (almost) any IR remote control and use the instruct...
- 2 Jun 2021
Active Low Pass Filter Bode Plot Analysis using Siglent SDS2102X Plus Oscilloscope

Hesam.M

In this video, I used the bode plot to analyze the low pass active filter's behavior in practice. There are not many devices that can calculate and demonstrate the bode plot. I used Siglent SDS2102X Plus oscilloscope to plot the bode curve. The c...
- 12 Apr 2021
The air quality monitor

kk99

A couple of my friends were interested in monitoring of quality of air in places where they live. I have decided to make for them an air quality monitoring station with optional monitoring for temperature, humidity and pressure. I have found nice pro...
- 21 Mar 2021
Cheap USB to UART Converter using Microchip MCP2200

Hesam.M

www.youtube.com/watch Nowadays USB port is used widely for data transactions between electronic devices and computers. In many scenarios, there is no need to communicate with the USB port directly, therefore electronic designers use USB to UART ...
- 27 Feb 2021
"Vintage Upcycling With Raspberry Pi and Arduino" & The Vintage Upcycling Winners

balearicdynamics

Finished writing at the end of November 2020. The book "Vintage Upcycling With Raspberry Pi and Arduino" is now live on Amazon.The book is available in paperback format and Kindle ebook, free for the Kindle Unlimited subscribers. From the ...
- 5 Jan 2021
A Digital FM Receiver with Arduino (Including 3W+3W Class-D Stereo Amplifier)

Hesam.M

FM transmitters/receivers are among the top favorite circuits of any electronic enthusiast. In this article/video, I have introduced a complete digital FM receiver design that has equipped with an LCD screen and three push-buttons. It can search for ...
- 24 Nov 2020
PWM H Bridge DC Motor Control

Hesam.M

An H-Bridge (Full-Bridge) driver is quite popular in driving loads such as brushed DC motors and it is widely used in robotics and industry. The main advantages of using an H-Bridge driver are: high efficiency, rotation direction change, and braking ...
- 6 Sep 2020
Open Source Hand Sanitizer Dispenser Device with Acrylic Enclosure [Pro Version]

Hesam.M

FeaturesHigh stability and no sensitivity to the ambient lightLaser-cut acrylic (plexiglass) enclosureCost-effectiveFlow control capability of the hand-sanitizer/alcohol (efficiency)Through-hole components (easy to solder)Single-layer PCB board (easy...
- 7 Aug 2020
PYNQ Workshop 2

weiwei2

By the time i got my board to test it is early July, so it is kind of latefor the session 2, my original aim is to use does overlay on IO to control on/off of water pump to shoot waterfollowing the lab book 2 (which is also accessible from Github htt...
- 3 Aug 2020
Powerful Standalone Digital AC Dimmer Using STM32

Hesam.M

www.youtube.com/watch This project is only free for personal and non-commercial use AC loads live with us! Because they are everywhere around us and at least home appliances are supplied with the mains power. Many types of industrial equipm...
- 3 Jul 2020
Install OpenVINO on PYNQ-Z2

ralphjy

I received an Intel NCS 2 from the Hackster Deep Learning Giveaway. I've used the original NCS on the PYNQ-Z2 and the Ultra96v2 using the NCSDK toolkit and I've just tried the NCS and NCS 2 on a RPi4 using the OpenVINO toolkit. I ran...
- 13 Jun 2020
Inrush Current Limiter (Soft Starter) for AC/DC Loads

Hesam.M

www.youtube.com/watch Inrush current/Switch-ON surge is the maximal instantaneous input current drawn by an electrical device when first turned on. Inrush current is much higher than the load’s steady-state current and that’s the source of many ...
- 9 Jun 2020
Using PYNQ as user interface/user experience platform

riklaunim

Using OpenCV to detect a face or other specific object on an image isn't something new or groundbreaking. However many machine vision applications are based on such functionality and the best ones excel because they provide the best UI and user e...
- 8 Jun 2020
PYNQ-Z2 Select Video Source

ralphjy

I'm finally getting around to doing my homework from session 3. I decided to do a simple modification of adding an AXI4-Stream Switch so that I could select between video sources, in this case between the HDMI camera and the TPG (test pattern g...
- 7 Jun 2020
PYNQ-Z2 Workshop - Lab 1: Debugging CAN Project with PYNQ

maxim.yudayev

TL;DR: Debugging a CAN board with PYNQ-Z2's logictools and WaveDrom -> -> A lot faster than debugging Assembly! This blog is long overdue, I hope your tea did not...
- 5 Jun 2020
PYNQ-Z2 Embedded Vision Workshop Session 3

ralphjy

This past Tuesday was the final session in the Pynq-Z2 workshop series. This session completed the embedded vision project by adding an interface for an HDMI camera and using it to read barcodes. The HDMI interface was was brought in as a ...
- 4 Jun 2020
Auxiliary PYNQ-Z2 features - using USB, GPIO and various HDMI setups for handy HDMI processing

riklaunim

The webinar focused on video processing while the PYNQ-Z2 board has additional features that can be used when making an edge-processing prototype.You can use the USB host connector to connect a UART serial/RS232 adapter to then control some electroni...
- 31 May 2020
Pynq-Z2 Getting Up and Running Overlay Modification

ralphjy

I was somewhat inspired by beacon_dave 's post on his overlay modification so I decided to do something very similar. I'm adding the Button interface to the overlay we created in Session 2 so that I can control the pattern that is displayed by ...
- 25 May 2020
PYNQ-Z2 Getting Up and Running

ralphjy

Another great workshop with Adam Taylor today. Adam went through creating a new Pynq overlay in Vivado. The workshop created an overlay with a VDMA element to interface the TPG (test pattern generator) with the Processing system. The...
- 20 May 2020
PYNQ-Z2 workshop -> after the first session

weiwei2

In session #1 of the workshop, i have learned a coupled of new things -the Linux that runs on the PYNQ-Z2 is PetaLinux-we can do RISC-V overlay on it Adam Taylor has provided a concise introduction about PYNQ-Z2 with sufficient information ...
- 19 May 2020
A fantastic workshop series about using affordable FPGA kit for acceleration

zhijun1

I have recently been exploring the possibility of using FPGA SoC devices and toolchains for experimenting on video signal processing. I tried Xilinx ZCU104, and found that the development process is not straightforward involving a complicated design ...
- 19 May 2020
DIY Non Contact Hand Sanitizer/Alcohol Dispenser [without Arduino/Microcontroller]

Hesam.M

As we all know, the COVID-19 outbreak hit the world and changed our lifestyle. In this condition, Alcohol and hand sanitizers are vital fluids, however, they must be used properly. Touching alcohol containers or hand sanitizers with infected hands ca...
- 18 May 2020