Wired && Coded;

In previous post we discussed CPU power consumption in PIP-Watch.

Processor Power The PIP-Watch is a battery-powered device that will be continuously on, hence the average power consumption is one of the most important engineering aspects.

The printed circuit boards for PIP-Watch Zero came from Pragoboard fab on Friday 12 Sept.

Schematic [PDF], BOM, and PCB layout for my PIP-Watch “Zero” was completed during this week.

In my previous homebrew projects I did not use any operating system in the embedded processors.

GDE021A1 is a graphics display with a resolution 172x72 pixels, each pixel is 2 bits deep (4 shades of grey).

Today I have managed to get the GDE021A1 ePaper display (EPD) working!

In my PIP-Watch project I will use a Li-On battery to provide power.

Target hardware: VOLTCRAFT VC-870 Multimeter UNI-T UT-D04 USB Cable Software repository location: https://github.com/jsyk/VC870_USB_Datalog The issue this software solves: Although the Voltcraft multimeter and the UNI-T USB cable are hardware compatible (…

Being mostly ‘digital’ guy, I’ve always shied off from switching mode power supplies because they are too much analog to my liking.

Again and again I need to look up the logic voltage levels of various logic gate standards like HC, HCT, LVT, and so on.

Today I tried pairing my UART-to-Bluetooth adapter to a Nexus 7 tablet to see how it works.

PIP-Watch (Personal Information Panel) is an open-source smart watch with an ePaper display, a bluetooth modem and a Li-Ion accumulator.

I started a new project called PIP-Watch: Personal Information Panel/Watch.

Mechanical drawing of my EPD ePaper display GDE021A1 is shown below.

I got myself an old Philips PM3310 Digital Storage Oscilloscope (DSO).

Some five years ago I bought a nice UART-over-Bluetooth adapter module.

Finally I declare the Talking Clock project complete!

The talking clock can tell the current time aloud in English.

Look what I’ve got by post today from our Chinese comrades at ‘Good Display’ factory: a nice small 2.04-inch electrophoretic display (EPD), or better known as ePaper/eInk display or ’electronic paper’.

I’ve just assembled both PCB boards of my talking nixie clock together and went ‘whoa, this thing IS really beautiful!’.

I am working on a talking clock with a remote IR control.

Finally, after much waiting, my ZedBoard arrived on Tuesday.

Running Xilinx Vivado 2013.3 (webpack license) on Fedora 18 may fail with the following error message: $ vivado ****** Vivado v2013.3 (64-bit)   **** SW Build 329390 on Wed Oct 16 18:26:55 MDT 2013   **** IP Build 192953 on Wed Oct 16 08:44:02 MDT 2013  …

I devised PORTAL as a means for validating our hardware accelerator cores (ASVP in SMECY) in a co-simulated environment together with control software.

In 2009 I joined UTIA and started working on the Apple-CORE project.

http://www.project-advance.eu/, Funded by EU FP7 My involvement: March 2012 - August 2012.

http://www.smecy.eu/ , Funded by EU Artemis JU 100230.

Projects, mostly home-brew: 2023-ongoing: X65 8/16-bit computer 2019 DIY VFD-Watch v2.1 (finished) 2019 DIY Analog Curve Tracer (finished) 2014 DIY PIP-Watch (never to be finished) 2010 DIY Talking Clock (finished) 2013 SMECY (February 2011 – January 2013)

http://www.apple-core.info/, Funded by EU, FP7-ICT-215215.

Ph.D.

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