Homo sapiens to Homo Ludens

A long, long time ago a bright ape figured out that by climbing down from the trees he could more easily master his life, and that of others……Homo sapiens wanted something else, and better. He started to play. Homo ludens was born!

Homo sapiens to Homo Ludens

  • Homo ludens radiactivus – amateur radio
  • Homo ludens radiohistoricus my antique radio collection
  • Homo ludens electronicus – electronic projects
  • Homo ludens aeromodellisticus – model airplanes

Transformers and coils: This is not a building project, but a short and concise lesson in how to design electromagnetic parts. It’s much simpler than what you may expect!

Thermal design: A short course in keeping electronic parts adequately cool.

From Hobby Hound – DIY Electronics

A 40 meter SSB QRP transceiver

“This transceiver was conceived as a power-efficient, small, lighweight unit to be carried in the backpack, along with antenna and battery, for use during trekking and mountaineering trips. It had to be reasonably rugged and reliable, and perform well. Furthermore, I wanted it to solve all the problems the old DSB transceivers had, such as frequency instability, distorted modulation, lack of sensitivity and selectivity, and others.”

Make a Custom eZ430 Chronos Watch

Evolution of The SmartWatch

This post was made in relation to the TI Chronos and Casio watches, The early Smartwatches.

This is not a HandHeld Gizmo but a Gizmo that Holds your Hand. Gadgets that Cling to the Body. Wearable Wireless Computers. The first Smart Wristwatch according to my knowledge was created by Casio. It was not as smart as the chaps below, but had many functions including a calculator and calender,

Release of databank telephone number storage wristwatch CD-40

January 1984 – “Casio released watches with various advanced features, including a calculator function (C-80 released in 1980), and a dictionary function (T-1500 Walking Dictionary released in 1982). The company wanted to see the wristwatch evolve from a simple device for telling time to an information device on the wrist.”

Casio CD-40-Databank Calculator

“This watch further advanced the concept of an information device on the wrist, and became a major hit product, selling a record total of six million units in the five years after its release.”

A smartwatch or smart watch is a computerized wristwatch with functionality that is enhanced beyond timekeeping, and is often comparable to a personal digital assistant (PDA) device

Earlier post in delabs Notes

(Posted many years ago in my other tech blogs and sites.)

eZ430-Chronos wireless watch - TI

When i saw this i remember my High School friend, he had built an advanced DIY Wrist Watch with LED Display and Radio, there was a temperature display too. A Gizmo WristWatch around 1980!

This Gizmo got many students wildly interested in Electronics. He also developed a Learning Kit ‘Chip Chap’ for 555. An Innovative Education Kit Developer Dynam was making it..

Here is one such Temperature, Wireless, USB Data Logger Watch Development Tool. But for an entirely New Generation.

eZ430-Chronos wireless watch – TI

The eZ430-Chronos is a highly integrated, wearable wireless development system based for the CC430 in a sports watch. It may be used as a reference platform for watch systems, a personal display for personal area networks, or as a wireless sensor node for remote data collection.

3-1/2 Digit ICL7107 DPM Digital Panel Meter

This is a Digital Panel Meter based on ICL7107. This was the workhorse Digital Readout chip before Low power uC designs were developed. Even now it is the easiest way an analog parameter can be displayed in an instrument.

This is the Display Circuit and PCB part of of section Temperature Control.

The above circuit is powered by +5 and -5 from a LM7805 and LM7905 pair. If +/- 12V or +/- 7.5V is used in opamp or digital parts, then use below circuit for the DPM section.

3-1/2 Display is just enough resolution for recording process data or troubleshooting equipment. With 4-1/2 you notice the problems of thermoelectric EMF of probes and connectors. That is one reason gold plating is used another being low contact resistance. In 4 1/2 the reading can change due to contact resistance too, if the input impedance of the analog signal conditioning is low or the protection diodes, RC filter caps are leaky.

When you measure an analog parameter from a sensor; you attenuate or amplify it, to scale to the A/D converter range. You also need to protect or isolate the analog front end from high energy mis-connections, which will happen during field use. The operator should not get injured from any high energy leakage while measuring.

Resolution is the finest detail you can enumerate in a parameter or object. You can say the crowd was 3000 or 4000 people. Here 1000 is the resolution, finer data does not matter here. You would also hear things like, there were 80 to 90 boys in that classroom. 10 is the resolution there.

Accuracy is how precise a statement or number is. If there was 85 boys in that class, the above statement is accurate. If there was 65 boys, the measuring method or process needs calibration or examination.

In this circuit, the plastic caps should be of very low leakage. Multilayer plastic caps are good for instrumentation.

The part numbers on circuit may not match the Silk Screen.

The PNGs of PCB is 600dpi 16 color. It is to be scaled appropriately.

ST07_1.pdf – DPM Schematic

Related Resources –

MakerSpace Hackerspace and TinkerSpace

I am using the word MakerSpace for the same Hackerspace. I would rather call them plain TinkerSpace, where youngsters take apart, fix, build Hardware, Software, Webware, Robots and Machines.

Sony used to get the abandoned ww2 radios in the islands to design, make and sell their first radio units. Honda used to fix bikes from europe and america to gain the skills and mutate to a global giant. Take apart, reverse engineer, fix and learn.

Hackerspaces are community-operated physical places, where people can meet and work on their projects.This website is for ‘Anyone and Everyone’ who wants to share their hackerspace with international hacker’s’paces.

Every kid is a born hacker and he starts with his toys, his mom does not like that, but he does not stop. One day he is building something pretty big.

Dallas Makerspace Wiki – Membership based, non-profit, shared community workshop and laboratory.

Milwaukee Makerspace – Social club for people who like build, invent, tinker and/or collect new skills and expand their minds.

In the late nineties and the early 2000. There were Hobby DIY Groups, Ham Radio Groups and Learning Electronics Communities. Hackerspaces by function, may be as old as technology itself. People working in a garage or shop to learn skills or build-invent something, but with different names like “Metal Tinkering Club” etc..

Recently the people at Make created a more organized and sustainable movement, that is helping the “MakerSpace” Phenomenon Emerge – Makezine – MAKE brings the do-it-yourself mindset to all the technology in your life.