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1. Pi Zero Wifi / STM32F103CBT6 Project Node Servers
(Projects and Gadgets)
A small complication has come up where the master I2C continues to repeat error conditions if the slave I2C is offline during messaging. I am working to deal with that using the...
Created on 29 September 2017
2. When Embedded Systems are Just Not Fun Anymore
(The Lounge)
Quote: I remember watching that video for the first time, mouth agape in amazement. Still to this day I can't figure out whether it's pure genius or a sign of some terrible personality...
Created on 05 May 2016
3. Switch Cap Sizes - A Helpful Guide
(General Electronics)
I'm not in the market for this right now, but I will be. So like all the things you post Jon, I'll add this to my OneNote for later reference. The controls for my devices will be...
Created on 26 March 2016
4. Switch Cap Sizes - A Helpful Guide
(General Electronics)
Here is some info on the 7mm x 7mm switch shown above. These are DPDT and may be latching or non-latching. This provides some features not possible with tactile switches.... [attachment] [attachment]
Created on 24 March 2016
5. Switch Cap Sizes - A Helpful Guide
(General Electronics)
Here's an example of the round captive switch caps. The panel is a 3mm Rowmark material with the color layer on the back. Laser-etching the back of the material leaves a somewhat...
Created on 22 March 2016
6. Switch Cap Sizes - A Helpful Guide
(General Electronics)
These 7mm x 7mm switches use the A4 caps. This size of switch is available as momentary contact or latching (push on / push off). [attachment]
Created on 22 March 2016
7. Switch Cap Sizes - A Helpful Guide
(General Electronics)
These caps and switches are cheap on eBay. This picture is a set of switches and caps for around $7. [attachment] Or you can go for the jumbo assortment of caps for about $5...
Created on 22 March 2016
8. Switch Cap Sizes - A Helpful Guide
(General Electronics)
The next two fit on larger 12mm x 12mm switches. The first is a square button with a clear cap. This is nice for labeling switches. If you print on a transparency sheet, your...
Created on 22 March 2016
9. Switch Cap Sizes - A Helpful Guide
(General Electronics)
Here are some small scale views of the info in the PDF. The views in the PDF have much more resolution, so the details are clearer. These first caps go on common 6mm x 6mm...
Created on 22 March 2016
10. Switch Cap Sizes - A Helpful Guide
(General Electronics)
6mm and 12mm tactile switches are commonly used with microcontrollers along with some other common types. A bewildering variety of caps are available on eBay, but it can be...
Created on 22 March 2016
11. MQTT, RPI, ESP8266, ATMEGA 328P Pro Mini, and Sensors
(Projects and Gadgets)
Coming soon, and will probably be posted to the programming forum... a complete guide to setting up a mosquitto broker on Debian Wheezy, MQTT libraries for the ESP8266 using... ...
Created on 03 March 2016
12. Thermocouple calibration Furnace
(General Electronics)
Hello everybody, I work in a developing company in major city of the middle east. Today we received a quotation from our friendly company asking for the quotation of Thermocouple...
Created on 14 December 2015
13. Getting Started in Analog Electronics
(General Electronics)
Some great info may be found in National Semiconductor's old ap notes: AN 31: Op Amp Circuit Collection AN-20 An Applications Guide for Op Amps ...
Created on 26 September 2015
14. Ok how do I go pcb shopping
(General Electronics)
Catching up on some links. Seeed CAM and DRU (design rule check) for Eagle - at the bottom of this page. Elecrow Circuit Boards Smart Prototyping Both of the above provide good...
Created on 27 August 2015
15. Transistor Motor Switch - Advice
(General Electronics)
Quote: There's some controversy over back-emf diodes. The first school says you need something like a 1N4004 to handle the voltage and current of the inductive kick. The other school of...
Created on 26 August 2015
16. HDMI Interface 5 Inch 800x480 TFT Display
(General Electronics)
This 5 inch TFT Display with Touch Screen is a mini panel-mountable HDMI monitor. So small and simple, but you can use this display with any computer that has HDMI output, and the...
Created on 20 August 2015
17. CC3000 WiFi Shield
(General Electronics)
[image] This is a shield for the CC3000 WiFi Module. The CC3000 from TI (Texas...
Created on 03 August 2015
18. Dropped in to say HI!
(The Lounge)
1.6.4 is running, and I added the url to the added boards. When I went to the board manager, there was a red error at the bottom of the window. no protocol:...
Created on 15 July 2015
19. Dropped in to say HI!
(The Lounge)
Awesome Bob, I will step through that awesome guide you wrote and find my answers. I did most of that, and have had some of the same results as you. A couple of things went wrong... ...
Created on 15 July 2015
20. Crowtail Starter Kit -- the perfect kit for Arduino starters
(General Electronics)
The Crowtail products are basic-functional modules that consists of various modules with standardized connectors, each Crowtail module has its specific functions, such as light...
Created on 30 June 2015

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