Contextual Electr. (@ContextualElec) profile picture

Contextual Electr.

@ContextualElec

Learn how to design, build and test real electronics from scratch.

 Chicago, IL
contextualelectronics.com
Joined July 2013
  • Tweets11.2K
  • Following71
  • Followers4.9K
Self-detect Pinout Connection ift.tt/SfOMTLH [@ContextualElec forum]
Self-detect Pinout Connection

Self-detect Pinout Connection

Hi! I am working in a project where there is a device and some sort of a “dock station” where the unit rest and charges, it can be placed in any direction, however, the “engaging” positions are...

forum.contextualelectronics.com
390
AS7261 XYZ colour sensor ift.tt/0j3sHfD [@ContextualElec forum]
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Argyris Build Log ift.tt/GaEpFLj [@ContextualElec forum]
Argyris Build Log

Argyris Build Log

Just happy to be learning, making and living.

forum.contextualelectronics.com
385
Can M16878/4 / M22759/11 wire be burried underground? ift.tt/4Jro97b [@ContextualElec forum]

Can M16878/4 / M22759/11 wire be burried underground?

Hello, I’ve tried searching online without success. The wire in question is PTFE insulation. My question is really simple, can wire rated as M16878/4 / M22759/11 be buried underground? Thanks!

forum.contextualelectronics.com
494
Problems registering for a course? ift.tt/bFmug3E [@ContextualElec forum]
Problems registering for a course?

Problems registering for a course?

Hi all, I have been aware of Contextual Electronics for quite sometime now, thanks to all the Youtube videos and podcasts Chris has been churning out. While I finally decided to take a leap and...

forum.contextualelectronics.com
360
How to automatic switch over voltage sources for RTC ift.tt/UrR9yci [@ContextualElec forum]
How to automatic switch over voltage sources for RTC

How to automatic switch over voltage sources for RTC

Hi all, I am trying to make a RTC backup voltage switcher (since my RTC ic does not have a separate pin for this). Under normal conditions, the RTC is powered by 3.3V coming from an LDO (powered from...

forum.contextualelectronics.com
291
Learn how semiconductors work with SiliWiz ift.tt/pTGyxhl [@ContextualElec forum]
Learn how semiconductors work with SiliWiz

Learn how semiconductors work with SiliWiz

Hi everyone, I’ve recently put together a tool that makes it easy to interactively explore how semiconductors work, in your browser. We have a guide that takes you through the basics and ends with...

forum.contextualelectronics.com
259
L matching network for ceramic antenna ift.tt/vsGb5uV [@ContextualElec forum]
L matching network for ceramic antenna

L matching network for ceramic antenna

I am designing a board with the IN100 NanoBeacon. My knowledge of RF is limited to making use of reference designs and I am trying to figure out a design recommendation. According to the datasheet,...

forum.contextualelectronics.com
280
Clarifying the mental model of an inductor ift.tt/jymKhqE [@ContextualElec forum]
Clarifying the mental model of an inductor

Clarifying the mental model of an inductor

My hobby these days seems to be revisiting concepts and topics I was once comfortable with and re-investigating them…! Today’s topic is the humble inductor; There seems to be a lot of sources around...

forum.contextualelectronics.com
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New email server ift.tt/tUbwo7Q [@ContextualElec forum]
New email server

New email server

Hi everyone, I’m testing out a new transactional mail server for this Discourse based forum. You will see emails being delivered from “[email protected]” from now on (or as...

forum.contextualelectronics.com
263
Board Layout Question (Robert Ferenec ESP32) ift.tt/lf853Vt [@ContextualElec forum]
Board Layout Question (Robert Ferenec ESP32)

Board Layout Question (Robert Ferenec ESP32)

Hi! was watching Robert Ferenec’s “How to Make Custom ESP32 Board in 3 Hours | Full Tutorial” and had some questions, I would love other’s opinion on at 1:24.02 (https://youtu.be/S_p0YV-JlfU?t=5042)...

forum.contextualelectronics.com
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349
Simple Board Layout - (feather to 3x DS18B20) : multi layer or not? ift.tt/IgR3OQX [@ContextualElec forum]
Simple Board Layout - (feather to 3x DS18B20) : multi layer or not?

Simple Board Layout - (feather to 3x DS18B20) : multi layer or not?

hi! I am playing around with EasyEDA, and I have a simple project to test it out with - an adapter board that takes a Feather board and attaches 3x DS18B20 sensors. So, super, simple! Even though the...

forum.contextualelectronics.com
312
PC Motherboard layout course ift.tt/Vu5SPLE [@ContextualElec forum]
PC Motherboard layout course

PC Motherboard layout course

Hey I was trying to find an episode or link of someone that was interviewed on the podcast. There was an episode where the interviewee taught a class on motherboard layout. Does anyone know which...

forum.contextualelectronics.com
217
Industry meets Makers 2023 Starting ift.tt/PEkw8V1 [@ContextualElec forum]
Industry meets Makers 2023 Starting

Industry meets Makers 2023 Starting

Industry meets Makers is a program done for the 8th time in 2023 that connects individuals with Companies to take on projects or find creative solutions to problems. I have personally been active in...

forum.contextualelectronics.com
250
Recommendations for PCB assembly in USA? ift.tt/CwIA7y3 [@ContextualElec forum]
Recommendations for PCB assembly in USA?

Recommendations for PCB assembly in USA?

I regularly use Chinese PCB & assembly companies (JLC, PCBWay, AllPCB) and been very happy with them, but I’ve got a customer who requires everything manufactured inside the USA. Please can I have...

forum.contextualelectronics.com
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Small Business IT Consulting Firm USA ift.tt/pCP1YFf [@ContextualElec forum]
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Elektor RPi ATX Interface ift.tt/Eo5vc4Z [@ContextualElec forum]
258
BJT (NPN) Pull-Down ift.tt/Bk7JMa8 [@ContextualElec forum]
BJT (NPN) Pull-Down

BJT (NPN) Pull-Down

@quozl / @ToyBuilder I’m at it again 😃 This is a follow on from my last post MOSFET Pull-Down but this time on BJTs (NPN) I was looking at the schematic for the IoT 6 Click from Mikroe (https://do...

forum.contextualelectronics.com
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270
The Open Toolchain Foundation wants to know about your toolchain ift.tt/RJ91A3Q [@ContextualElec forum]
The Open Toolchain Foundation wants to know about your toolchain

The Open Toolchain Foundation wants to know about your toolchain

Hey, I’m helping out a little bit with a new foundation to foster and promote open toolchains in the hardware space. Would be great if some of you could list, praise and complain about your toolcha...

forum.contextualelectronics.com
292
MOSFET Pull-Down ift.tt/eaAEsPo [@ContextualElec forum]
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