Okidoki, No decent pictures yet, but I have assembled the board, got the arduino working at 8Mhz (IDE tricks, I'll document). I'm only running at that because I have several 8meg crystals and this is an ideal project to use them up. Speed is...
Stay tuned for the prequel that describes how we got to this point. For now, an update on the quest for ROS/Ubuntu... After trying multiple avenues for Ubuntu on Raspberry Pi, I ultimately came back to the Raspberry Pi imager. I suppose the people actually...
I tried to place all components for a single axis on a perfboard including a STM32 which should be faster than the Arduino UNO. There is plenty room for improvements in soldering the connections. I tested out Fritzing for planning the board on the PC...
I've decided to take stakes a little higher and prepared bigger version of previous prototype. New one used Texas Instruments TAS5805M DAC, which is a big upgrade actually - It have high power stage, producing up to 23W per each of 2 channels (yeah!)...
I just put a project up on Tindie for the first time...but not this one. Of that other project, I had JLCPCB build 5, but I probably only need one for myself, so that's 4 that are ready to go. This, however, seems to be my...
Bench tests indicated an active GPS antenna placed under the top of the Cyberdeck acquired plenty of satellites with good signal strength, hence the next step was an internal GPS module.The active patch antenna and corresponding NEO-6M receiver PCB conveniently...
Made up a simple board to plug into the Jetson Nano DisplayPort socket, on order with OSH Park.I struggled to find a source for PCB mount DP plugs, so ended up ordering a DP->HDMI adaptor and extracting the connector. For the 40pin eDP socket i asked...
I finished connecting the 2.42 inch OLED display to the board. One difference this time: I added a 47uF capacitor across the 3.3v and GND to hopefully stop the display from dimming. And it appears to work! So the display, keyboard and BASIC are...
To mount the pole and motor, I used a closet pole cup on one end. This is normally screwed to the wall in a closet, and allows you to lift the pole out. This was mounted into a brace which was screwed into the wall studs, though a drywall...
I've spent far too long looking at Cyberdecks on HaD and Reddit, I think. It's influencing my decisions with projects like this. It's not a bad thing. Ha ha ha!One of the main issues I've had with this project is space utilisation; fitting two separate...
I have gotten some MAX7219 chips now, I found some 8x8 LED matrixes, some buttons unsoldered from a scrap board, perfboard and I have plenty of Arduinos. Time to go RealLife with this, too! Today I managed to get the layout done. The wiring...
I've meandered through a few weeks of low activity, but I finally had time to track down the bugs that arose when I tested out my most recent PCB revision. First bug was the power switch MOSFETs that didn't seem to work as expected. That turned...
Looking carefully at the photo below, there can be seen 2 resistors and a NPN transistor floating above the main board. Form the +ve battery terminal, there is the collector of the ZTX450 transistor with a 4.7K resistor soldered to the emitter. Then,...
This is a doddle. Compile using WinCUPL. I have plenty of PAL chips and a suitable programmer. https://hackaday.io/project/160901-antique-pal-reading-system It is not hard to port the logic to GAL chips. I can program them too. I can program and...
The microcontroller used in this project is also made by Sipeed. It is called the Maix Bit and was released a few years ago. It features a high-performance SoC called Kendryte K210, which can be used for edge computing.AI devices evolve quickly, and...