Electronics

Electronics, Tools

Desk Organization / Mess :)

by Chester Lowrey • 2018-08-13 • 0 Comments

Which is the fastest Arduino – ESP32, ESP8266, Arduino Uno, Arduino 101 +Others Speed Test Comparison Chart

by Chester Lowrey • 2016-12-01 • 9 Comments

This started because I was interested in how the new ESP32 compared against other common Arduino compatible development boards. Source code Arduino sketch on Github The source code is based on this post Direct link to Google Docs Spreadsheet – same as embedded above – feel free to make a copy of the spreadsheet and link it below…

SSD1306 64×32 Pixel .49″ OLED ER-OLED0.49-1W

by Chester Lowrey • 2016-10-10 • 4 Comments

I have modified the Adafruit SSD1306 library to work with the smaller 64×32 OLED Displays that can be purchased here and from various other online suppliers. https://github.com/WaiakeaRobotics/Adafruit_SSD1306 PDF showing proper wiring for OLED Notes (In Chinese – use google translate) from another on modifying the UCGLIB library for this display

Plastic Case 85x58x33mm KH-F19 Dimensions

by Chester Lowrey • 2016-10-06 • 0 Comments

These 85x58x33mm cases can be inexpensively sourced from many locations. However I could find no data on the hole layout so here it is! Remember that the clear plastic lid has a smaller ID than the main part of the case as it overlaps in the seal area!! something to keep in mind if you…

Testing ST7735 128*160 SPI TFT Display

by Chester Lowrey • 2016-10-04 • 0 Comments

I’d say it works well 🙂 very happy, using the ucglib graphics library. It has advantages compared to the adafruit library in rewriting data to the screen in such a way that avoids the entire line flashing on rewrite.

Testing Current Transformers

by Chester Lowrey • 2016-10-02 • 0 Comments

V1 120.55 V1 avg 120.51 CT1 A 3.72 CT1 VA 448.61 CT1 W 357.18 avg 343.68 CT2 A 3.68 CT2 VA 443.41 CT2 W 354.12 avg 343.20 CT3 A 3.60 CT3 VA 434.26 CT3 W 347.32 avg 343.10 CT4 A 3.59 CT4 VA 432.64 CT4 W 345.86 avg 339.43 CT5 A 3.61 CT5 VA 434.80…

Laser cutter stepper motor driver upgrade

by Chester Lowrey • 2016-09-08 • 0 Comments

It was definitely time to clean up the wiring inside this laser cutter.. Something that was lashed together as quickly as possible and now has some wiring issue somewhere, best replaced with newer tech. Original double sided hand taped and etched PCBs made in 2004 for my CNC mill project – partly still working 2016

ESP8266 Battery Voltage Monitor Simple

by Chester Lowrey • 2016-09-02 • 6 Comments

Real time graph – Warning may appear to freeze your browser as it downloads data points from Thingspeak – assuming the system is still running – started 2016-9-1 😉 This is a small 110AH 12V lead acid battery charged by about 200W solar panels – the spikes in charging are from clouds going by +…

KiCad Libraries

by Chester Lowrey • 2016-08-25 • 0 Comments

https://github.com/metacollin/kicad-gigalib Integrating FreeRouter with KiCad Newer branch of freerouter

Thingspeak Graphs – Beta

by Chester Lowrey • 2016-08-09 • 0 Comments

ZVS Induction Heater – Original

by Chester Lowrey • 2016-01-22 • 0 Comments

For now this is just a collection of some links and notes.. I have built in the past and plan to rebuild in the future a large multi KW induction heater, but alas too many project syndrome. Build your own: https://markobakula.wordpress.com/power-electronics/500w-royer-induction-heater/ Or buy for $8.55: http://www.banggood.com/5V-12V-ZVS-Induction-Heating-Power-Supply-Module-With-Coil-p-1015637.html