Here the first attempt for a case for the UD-80 replica. More tuning required. Here a STAT A:*.* and STAT C:*.* on the external display. The board inside the case. No internal mounting is required, the front and back panel keep the board in place when...
When I set about this project the first thing I wanted to work out was what LED I was going to use, as this would drive the requirements of everything else in the project, driver, lens, heatsinking, etc. Due to personal preference I decided that I wanted...
At the heart of the FunKey electronic design is the CPU block, built around the Allwinner V3s chip: We selected this particular chip because it features a built-in 64MB DDR2 DRAM, which is very good as it saves some precious real-estate on the PCB and...
I started wiring up the Memory sub-system board and realized quickly that I needed the display board to show the state of the various registers. I first had to create a backplane to connect the boards into. The backplane carries all the signals...
I'm going to do a high-level explanation of what the code in the Jumperless is actually doing. There's a lot going on and it's in a bunch of separate files so I think it will be helpful for people who what to understand or improve upon it. Table of Contents (bolded...
So I started to write the dependencies of components down and realised that Room > Frame > Gantry > Slime is wayyyyyy better than trying to go the other way around. Thus, I'm currently modelling the location in the room where the printer is going. I...
Remember the last logs : the goal is to use as few transistors as possible to send a string of consecutive non-overlapping pulses to several pass-gates. Here the design uses NPN as primary type but it will be reversed later because PNP are the majority...
A very old project. By using a single VU meter IC (LM3915?) and aanother IC that sequentially connects the columns of LEDs to ground (i.e.the time scale), the VU meter effectively "sweeps" across the waveform ina quick succession.
Development on the V9958 board continues apace, and after a false start due to a silly mistake in the first revision things are back on-track with a revision 1 prototype. The design is now validated and working really well. So far it's baby-steps in...
My dear readers, today I will fascinate your eyes and minds with this beautiful work of art.Made in a hurry. I will draw the schematics later by hand like usual.The sound system is based on subminiature Soviet Union vacuum tubes and it consists of 5...
A shipment of 80 timers arrived last week. 5 timers had broken screens. It looks customs may have gone to town on the box poorly re wrapping the PCBs afterwards. I will send them back to the factory for replacement down the track.
The donor for the below has been a leather couch cushion, in very good shape, given to me years ago by a neighbor, it's nearly exactly what was needed.I had tu unsew it all to do my patron, and with the help of Sabrina, my colleague from the "design...
The address thing of the past few logs is... cool-that-it's-possible. If you don't recall from a while-back, the idea was to use a *default* address-location to use as a jumping-point to all other address-locations. A bit simplified, I'd write to address...
I wanted to use a BMP280 I had in my parts bin for altitude measurements. I have used it in the past for a simple weather station and it works great! Turns out, it is even the go to sensor for Stratux, so I went ahead and plugged it in, activated it...