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.

Sunday, February 22, 2015


PRESS RELEASE                                                     FOR IMMEDIATE RELEASE

Christopher Johnson, N1IR
Genesis Amateur Radio Society
Education Officer


Plymouth, MA N1IR is pleased to announce the launch of a no-cost on-line Technician Course. In as little as 20 minutes a day for 20 days you can pass the FCC Technician Element 2 Examination.

Each day there is a two part video series. The first part is on specific sub-element theory and the second video covers all the questions and answers of the sub-element you are studying for that day. After watching the videos for that day all the student have homework assignment for the day and quiz for that days class. An on-line webinar will be available to ask questions and offer guidance for the course. A list of webinar dates will be posted on top of the n1ir tech course page. If you have any questions please email me at n1ir@arrl.net.


Please play introduction video first and course navigation second.

Hope to see you there,

Christopher Johnson, N1IR
Genesis Amateur Radio Society
Education Officer


The Genesis Amateur Radio Society is a non-commercial association of persons interested in Amateur Radio, organized for the promotion of interest in Amateur Radio communication and experimentation and education, for the establishment of emergency communications in the event of disasters or other emergencies, for the advancement of the radio art and the public welfare, for the representation of the radio amateur in legislative matters, and for the maintenance of collegiality and a high standard of conduct.

Friday, February 6, 2015

Engineering Academy TV-B-Gone

Install 8 Pin Socket Pin 1 Faces Left

Install 8 MHz Resonator

Install PB Switch

Install Green LED Flat side facing up toward N1IR letters

Install 1K Resistor

Install 30 Ohm Resistor

Install IR LED Flat side facing UP toward N1IR letters

Install 6.8uF Cap positive side facing UP toward N1IR letters

Prepare battery clip but cutting leads to one inch

Install Battery snap Positive lead UP toward N1IR letters

Hot Glue board onto battery clip

Thursday, January 29, 2015

Blimpy BT Board

Remove Board from Car

Flip board

Remove motor wires

Get a 4 pin socket and cut them in half

Cut IC pins

Install IC Pins Sideways

Get a 4 pin socket and cut them in half

Cut IC pins

Install Ground pin Sideways

Hot Glue Battery and charge plug

Hot Glue Wires

Install Red stranded wire

Install Black stranded wire

Have Mr J Install grey Wire

Monday, January 26, 2015

Bimpy VER 2

Place Glass Insulators (2) on Crystal Leads

Install 16 Mhz Crystal

Install 28 Pin IC Socket

Install 4 Pin IC Socket 1

Install 4 Pin IC Socket 2

Install 4 Pin IC Socket 3

Install PB Switch

Install Buzzer + Side Down

Install 1000uF Cap + Side Towards Top

Install 22pF Cap

Install 22pF Cap

Install 6 Pin Program Header

Install Jumper above 100uF Cap

Install 160 Ohm Resistor 1

Install 160 Ohm Resistor 2

Install 160 Ohm Resistor 3

Install 160 Ohm Resistor 4

Install 10K Resistor (near pin 1 of IC)

Install .1uF Cap (near pin 1 of IC)

Install Photo Cell

Install 1k Ohm Resistor

Install Atmega328

Wednesday, January 14, 2015

Backup Power Source

Here is my latest project a 2500/5000 watt inverter with two group 27 marine batteries.


Two group 27 Batts at 90 AH Each or about 2100 Watt Hour

Cobra  CPI 2575 2500 Watt Continuous / 5000 Watt Peak

0000 AWG Welding Wire (see http://www.n1ir.com/2014_08_01_archive.html for why I use 0000 AWG)

1/2 inch copper pipe as bus

Works great powering up the forced hot air furnace, handles the 2400 Watt Start-up for the blower without a sweat and keep the furnace going at 960 Watt running. I figure a run time of 15 min 4 times a night, this set-up would last about 2 nights without recharging on paper ignoring losses and efficiency, in practical application I would only rate it at 1 night.

Would work really well with electric blankets (180 Watts)

*** Note: if connecting battery in parallel use the same type and age battery. If Different age or type please use an isolator pack.