In this post, I’ll show you a Raspberry Pi microscope I made for soldering and inspecting PCBs. The great thing about it is that it has a long working distance. This enables the microscope to be mounted on the shelf above my workbench so it doesn’t get in the way. An additional benefit is that the image doesn’t shake if you bump the table when working.
In this post I will document some of my smaller projects that don’t deserve a whole blog post of their own.
In this post, I’ll show you how to make a cheap portable spectrum analyzer from a TV receiver dongle. The dongle gets sold as a TV (DVB-T) however its an SDR(software defined radio) which means that it can be used to receive pretty much any RF signal(depending on the chip used up to 1-2 GHz) and turn it into a digital one to be later processed by software.
In this post, I’ll show you my DIY FPV goggles. These obviously aren’t as good as proper FPV goggles but they are cheap, they work and I was able to make them out of things I already had at home.
In this post, I’ll show you a handheld induction heater I made. I bought the ZVS driver circuit board and coil quite some time ago but I just recently saw someone made a very neat 3d printed case for it on thingiverse and decided to make a handheld induction heater out of it. This one is smaller and much less bulky than the other one I made wrote about in this post.
In this post, I’ll show you the induction heater I made. I bought board and coil as it’s easier and quicker than making it on your own. It’s rated for 2000W but the maximum power I can get out of it is 1200W because that’s as much as the power supply I’m using can supply.
In this post, I’ll show you how to make a signal generator and oscilloscope from a PC soundcard. I used a cheap USB soundcard so in case the input voltage gets too high, I don’t damage my PC. This signal generator and oscilloscope obviously don’t have the best specs and are very limited. They can produce/measure a very narrow range of voltages and frequencies(0-20KHz).
Recently I decided to clean up my project backlog by either finishing or scraping the projects. A lot of times when I start something it eventually ends up being sidelined for months(or even years) for a multitude of reasons (being busy with other stuff, waiting for parts, forgetting about them, not feeling like it). In this post, I will document some of the ones that I decided to cancel/scrap, how far along I got and the reason I started the project in the first place and why scrapped it.
In this post, I’ll show my DIY SMD vacuum pickup tool. I bought this vacuum pump SMD pickup but it had no way to be turned on/off. There is only a hole on the vacuum “pen” that you can cover with your finger to make or release the vacuum. I decided I would mod it and make it operable with a footswitch. When pressed the vacuum pump is turned on and when you let go the vacuum pump is turned off while the valve is opened at the same time to release the vacuum and instantly drop the SMD part from the nozzle.
In this post, I’ll show my DIY solder paste dispenser. It’s powered by a 12V adapter and can be operated by a footswitch(connected via banana connectors). It uses a small membrane air pump/compressor to dispense the solder paste/flux. Additionally, there is a solenoid air valve connected to the airline so the pressure can be released after you let go of the footswitch which prevents the solder paste or flux from oozing out. The pump and valve timing is controlled through a relay module by an attiny45 microcontroller.