My wife owns a Samsung NX-300 camera and I wanted to use it for longer periods without needing to charge batteries round and round. Unfortunately, this camera can use its microUSB port only for charging – it doesn’t work without a battery and doesn’t charge when powered on. So I had to create a dummy battery.
Continue reading Adapter powered NX-300 cameraCategory Archives: Projects
About adding a static route to my DOCSIS modem
You may think this is an easy task but let’s find out. One would expect such functionality in a web interface …
… but no, it’s not there. So what’s next? Let’s hack it!
Continue reading About adding a static route to my DOCSIS modem
Zidoo X8 recovery
Short guide how to recover from completely wiped eMMC in case you have full eMMC backup and a bootlog from working device.
Continue reading Zidoo X8 recovery
Testing chinese FRAMs
I’m planning to use FM24CL16 EEPROMs in some projects. These are simple I2C EEPROMs but based on FRAM technology so they should last 10^14 of writes while typical 24Cxx chips only last one million. They are much cheaper on aliexpress than at my local distributor so I ordered 5pcs from this seller for about 40 cents each. Since my local distributor sells them 5 times more expensive I was a little bit suspicious if these are legit parts so I decided to test them.
Continue reading Testing chinese FRAMs
Playing with CAN bus
I got inspired by comma.ai – it’s a HW device which will drive your car, pretty much like Tesla does but for a fraction of it’s price. For this, it needs to connect to CAN bus of your car. My current car cannot be driven by wire but it has some simple CAN buses so I decided to have a little play with one of them, just to explore the technology. Continue reading Playing with CAN bus
Emulating HDMI connection
If you want to play with HDMI signals or just emulate a connected display for whatever reason, you need to fool your videocard to think something is really connected.
Continue reading Emulating HDMI connection
My unbiased experience with JLCPCB
I needed to fabricate some PCBs. I’ve seen some youtubers to advertise and recommend this service so I decided to give it a try. My order was done without using any affiliation link or discount code so there was no way for them to know who I am. I needed to create a microSD breakout board and luckily I found a similar OSHw project and only made some modifications: https://github.com/danielkucera/MicroSD_Sniffer . I prepared my board in Eagle and generated gerber files. Continue reading My unbiased experience with JLCPCB
FL2000 as signal generator
First we need to generate some samples: Continue reading FL2000 as signal generator
FM transmission test with FL2000
My USB 3.0 to VGA adapter arrived a few days ago so I tested the FM transmission example. Continue reading FM transmission test with FL2000
Smart energy meter
In my current flat the central heating runs on natural gas and I wanted to have a nice chart showing its consumption. The gas meter is directly in the hallway so everyone can see it. Because of this, I cannot simply bring in AC power and attach some exposed wires, otherwise my neighbors would probably call anti-terrorist group. The measuring device has to be small, look professional and have low power consumption so it can run on batteries. In next lines I’ll describe how I have achieved this.