Markus posted an update on his latest project SID player we covered earlier. The PIC32 acts as USB host to the attached memory stick, which contains all my favorite tunes in .sid format from the HVSC. I used Elm Chan’s FatFs library because it hat LFS (long filename support) together with the Microchip USB stack. […]
Category Archives: project logs
Hybrid SID player update
Markus concludes his SID player project: To conclude this project, I added a headphone amplifier to the perfboard. I had this in my mind when soldering the other parts on it, so luckily there was enough space left :) Here is the updated schematic and some pictures of the finnished board. Video below. Via the […]
DIY bench power supply
SQKYbeaver posted a linear bench power supply in the project log forum. i have been working on a linear bench power supply, and have come to the conclusion that the cost of parts will be more than what i cam buy an assembled one for, however i will share what i have come up with […]
Biofuel reactor control board
Armandas has posted his masters project The design is based around a PIC18F66K22 microcontroller. The board has a switching power supply supporting an input voltages of up to 34V, five thermocouple channels, HD44780 LCD interface, a battery backed RTC and a microSD card slot. The control unit interfaces with an electrical system (designed by my […]
DIY Geiger counter
Rubi shared his Geiger counter based on a Russian SMB-20 tube in the project log forum. Thanks Rubi!
Pico-OS a dangerous coroutine kernel
voidptr posted a pico-OS in the project log forum: … it is an old silly pico-os (smaller than micro) of coroutines from one on my old projects. This is not fancy or complete like other os or RTOS but it is very small and can be useful… right now it is written for the PIC […]
PIC LCD backpack assembled
schazamp posted pictures of an assembled PIC USB LCD backpack PCB in the project log forum. Nice work! Thanks for posting a picture of the completed board! With our new unlimited free PCB program schazamp gets a coupon code for another free PCB.
Surface mount Conway Game of Life
victzh shared his SMT version of Ladyada’s (Conway) Game of Life in the project log forum: I designed small 2-layer PCB for a version of Ladyada Game of Life. The board is two-side, front has 16 0603 LEDs on it, back has ATTiny861, 4 resistors, 4 FETs, 2 capacitors and one button.
PIC32 drives SID audio chip
Markus shared his latest SID player in the project log forum: I am currently working on a kind of hybrid between an emulated and a real SID Player. The CPU and CIA stuff runs emulated on a PIC32 and the sound is generated by a hardware SID chip. I had the TinySID emulator already running […]
DSO nano signal generator repair
Georg blew out the signal generator on his DSO nano portable oscilloscope. He brought it back to life with a new buffer chip, his repair guide might save your nano too: Spotting the chip on the board is very easy. It’s in an SMD package but fortunately a rather large type. So, although I have […]
MSP430 bedside table alarm clock
Markus shared his DIY alarm clock using an MSP430 in the project log forum. Video below.
9 channel DMX512 dimmer
rsdio shared a PIC16-based 9-channel DMX512 dimmer in the project log forum. This isn’t open source, but enough details are provided for a remake.
Reflow oven controller update
robots updated his reflow over controller, source code is now available in github. Next up – install the electronics. Via the project log forum.
Omnidirectional remote controlled robot
Markus shared his Omnidirectional remote controlled robot in the project log forum: Recently, I got interested in omni wheels, so I built this little robot. The robot has three pairs of omni wheels. I covered each roll of the omni wheels with liquid rubber (plastidip) to get better traction. I bought the cheapest servos I […]
mbed base station
frank26080115 shared his own open source mbed base station design in the project log forum: Does anybody here use the mbed? I got one recently and it’s really great for trying out ARM. The DRM on it is pretty bad though, and the online compiler isn’t the greatest. However you can till build binaries using […]
ChronoBlot DIY remake of the ChronoDot
schazamp shared his ChronoBlot remake of the MaceTech ChronoDot in the project log forum: I made this ChronoBlot a while back, but now that I have a Bus Pirate, I can easily test it out, set the clock, and set the alarm (and write scripts to help with that), so I’ll be updating it soon […]
DIY hot air rework station
omegat shared his hot air soldering station in the project log forum: I saw an inspiring post on here; which made me creative. The whole thing should be cheaper than an Aoyue hot air soldering station (~85€). Pictures, source code, and Eagle files at the link. Thanks omegat!
The 555 SliderSynth
Makerdino shared his 555 Slider Synth in the project log forum: When it’s turned on by pressing SW1, the 555 astable oscillator is activated. It will produce a tone through the speaker that can be varied in pitch by changing the distance between the LED and the photo cell. Via the forum.
Reflow oven controller prototype
robots posted pictures of his reflow oven controller prototype. Software development is in progress, and menus have been added. Via the project log forum.
Light controlled screamer with 555s
Makerdino shared his light controlled screamer with 555 chips in the project log forum: Here’s a fun project to make with the 555 chip. It can be built as a stand alone circuit or you can put it inside a doll, toy or whatever! I’m entering this one in the 555 Contest in the Art […]