Welcome to the N1IR Electronics Website. Totally off the cuff, one take, unrehearsed video projects for anyone interested in amateur radio, electronic design, makers, hardware hackers and science.


Get off you duff and build something!
Training the hand and mind since 1982.

Monday, January 23, 2017

EPILOG CHEAT SHEET



5.5mm Wood Underlay

Speed Power Frequency
Raster 50 10-20 50
Vector 8 90 50

1/8” Acrylic Smoke Grey

Speed Power Frequency
Raster 50 10 50
Vector 4 100 100

PC Paper White

Speed Power Frequency
Raster 50 5 50
Vector 50 10 50

Heatsink Aluminum Black Anod.

Speed Power Frequency
Raster 100 20 50
Vector x x x

Tuesday, January 3, 2017

Laser Cutter

Just got the laser cutter up and running. Thanks to Electrical, HVAC and MFW, they ran all the electric and vents to the outside. Here are some pics



Above Epilog Fusion 30x20 Bed 60 Watt CO2

 Here is a sign example, we used a 6x12 inch oak board, light spray paint and then sanded

Here is a 1/8 inch acrylic plastic sheet cut to our line following robot, we assemble this project in the 9th grade.

Here is an video of the sign etching

Monday, December 5, 2016

Friday, May 6, 2016

TDA7375


TDA7375 Power Amp Project  



Make Sure all holes are correct size
 for RCA and Green Screw Connector

 Install LEFT RCA RED connector

Install RIGHT RCA WHITE connector

 
 Inspect

Install 10 K Ohm Resistor

Install .39uF Cap

Install second .39uF Cap

 Install 47uF Cap - side left

 
 Install 100uF Cap

 Green Screw Connector
Open side facing LEFT

 Green Screw Connector
Open side facing LEFT
 Green Screw Connector
Open side facing RIGHT

 Green Screw Connector
Open side facing RIGHT

Install TDA7375

Mark Heatsink

 Mark Heatsink

Drill and Tap 4-10