Category Archives: project logs

Simple 0.96″ 128×64 OLED breakout board

noahp shared his breakout for 0.96″ 128×64 OLED display in the project log forum: Thought I’d share this design here in case it can be of use to anyone. Includes python script that initializes and loads data to the ssd1306 (please excuse the logo pandering, needed a simple example and that was right in front of […]

Controller board for RGB LED Matrix displays

EmbeddedCreations is working on a controller board for the 16×32 and 32×32 RGB LED Matrix displays: I’m working on a controller board for the 16×32 and 32×32 RGB LED Matrix Displays you may have seen at Adafruit and Sparkfun. After seeing Paul’s post on driving WS2811 LED strips with DMA on the Teensy 3.0, I looked into […]

504 Segment clock, a 7-segment clock done differently

Bertho  has designed and built this cool 7-segment clock, the 504 Segment clock: At some point I was being silly and got the idea of making a 7-segment clock, but then a bit different. The result became this.  Features include: 72 7-segment displays in three rings; inner (hour) ring 12 displays, middle (minute) ring 24 and outer (seconds) ring 36 […]

Open source hardware GPIB USB Adapter

scasagrande shared his GPIBUSB Adapter rev3 in the project log forum: This past weekend I finally finished up the third major revision of my GPIBUSB adapter board. Major hardware changes include swapping the pull-up resistors for the proper GPIB line drivers, as well as swapping the FT232RL for the newer FT230X. There is a number of software […]

Open hardware USB to RS485 adapter

Ethan Zonca of Protofusion writes: While developing the Luma RS485-networked LED driver we discovered a need for a small and inexpensive USB to RS485 adapter. We designed an adapter with a FTDI basic UART chip (FT230XS) and an inexpensive TI differential receiver (SN75176). Our small selection of parts brings the cost down to just over […]

Relay control board on DP5031 PCB

Tom writes: Here’s a breakout board for those Songle SRD series relays that are so cheap on Ebay. It fits nicely on the Dangerous Prototypes standard PCB size DP5031. Electromechanical relays are generally employ small signals to switch much higher voltages and currents. As a result, a nice big gap is required to insulate between […]

OSUS – Open source USB Stack test board (Master)

Here’s another cool project by Mats the OSUS Master board: A long while ago I wrote about that I might make a series of boards for easier testing of the open USB stacks. Testing all different version of mcu’s and crystal speeds to make the right #defines and linker maps for the firmwares can be a […]

POTONG6 – Potentiometer & Slide switch breakout

Mats shared his Potentiometer & Slide switch breakout -POTONG6 in the project log forum: This is just a small utility board that I added to a previous batch of PCBs. Nothing fancy at all. :-) Sometimes I need a pot or two when I test a design on a solderless breadboard and it’s always a PITA […]

MCC8 – PIC24 based CHIP-8 game emulator

Here’s another project by Mats the handheld PIC24-based CHIP-8 emulator game console: This is a small handheld PIC24-based CHIP-8 카지노사이트 emulator game console. A cheap Noika 1202 LCD is used as the display and a CR123A 3 volt lithium battery for power. CHIP-8 is an interpreted programming language, developed by Joseph Weisbecker. It was initially used […]