Raspberry Pi power and mounting

I’ve been in need of a good way to mount my growing collection of Raspberry Pis (rpi) and to power them from a convenient power supply. Wall warts are notorious for not supplying the correct voltage or meeting the right amperage requirements. To that end, this article was begun.

A bit about my needs, I have a rpi that includes additional hardware in the form of what is called a “hat” and also a SATA hard drive. This hat fits on top of the expansion header on the rpi, and provides additional functionality. For this article, I will be using the club repeater antenna monitor system as an example.

The initial setup consisted of a rpi, a Pi-plates DAQCplate (for Analog to Digital Conversion), and a SATA to USB board for the hard drive. The system runs from a 5Vdc/4A AC/DC power supply (wall wart). During testing under load, the power supply regularly dropped to 4.8Vdc. The rpi requires a voltage between 4.8 and 5.2Vdc. Below 4.8Vdc, the whole system becomes unstable, with possible loss of data, poor A/D acquisition, and a whole host of other issues.

After a fair amount of searching, I came upon a hopefully better approach to the power supply issue, in the form of the Bitscope Blade Uno Pi (BB01). This has a few useful features beginning with a wide range (9 to 48Vdc) power supply which outputs 5Vdc at 3A (4A peak). This allows me to use any of my ham radio power supplies and/or battery systems to power everything. Additional features of the BB01 include an extra 5Vdc power header, and dual USB jacks to power other devices.

More to come soon!

Avast antivirus has unblocked our website

From Avast antivirus:

Our virus specialists have now cleared its [brars.cc] reputation in our database. With URLs this change should be instant, but it might take up to 24 hours with files.

Best regards,

Avast Customer Care

DMR Presentation Tonight

Danny KN4BEM here.

I am giving a presentation tonight on Digital Mobile Radio (DMR) and its use in Amateur Radio.

Come by at 7pm! We meet at the American Red Cross at 940 Grove Rd, Greenville, SC 29605.

Field Day 2019

The Blue Ridge Amateur Society would like to invite you to our annual Field Day event.

Where:
Riverbend Park located at 175 Riverbend Rd, Greenville, SC 29617

BRARS field day signs will be posted at the entrance of the park and intersections leading up to it.

Talk-in: 146.610 will be monitored throughout the event to provide information. Site radio will be on 147.610 simplex for use on the site and nearby.

Field day activities will begin Friday evening June 21 at or about 1700 hours ( 5 pm ) with the loading of field day equipment from the club storage building. Setup will begin Saturday June 22 at 10 AM.

Anyone wanting to participate, please contact
Nathan Allison (KJ4RQZ) at 864-884-1373.

We will be setting up 3 stations (Class 3A), consisting of 2 club owned stations powered by generators for HF, voice, GOTA (get on the air) and CW operations plus 1 privately owned Digital station.

Please feel free to bring any equipment that you may want to experiment with, or otherwise need assistance with.

Commercial power is available in the form of 20 amp/120V, 30 amp/120V RV and 50 amp 120/240V for a fee of $20.00 per connection.

Bathrooms are available on site. Tent camping as well as RV’s are welcome.

A covered dish dinner will be served at 6pm with BRARS providing grilled hot dogs, hamburgers, buns and condiments.

Anyone attending dinner is asked to bring a drink of their choice (non-alcoholic) and a covered dish.

Please arrive one hour (5pm) before dinner time to allow for the correct amount of grilled items to be prepared.

The event will conclude with taking down of and returning of equipment to storage on Sunday, June 23 at or about 1400 hours (2pm).

ARRL_FieldDay_2019

Field Day 2019 information

Field day weekend activities.

Location:
June 22 AT 2pm until June 23 at 5pm Riverbend Park 175 Riverbend Rd, Greenville, SC 29617

Field day equipment will be loaded for transport Friday evening, June 21 at the club storage building.

Setup will begin Saturday, June 22 at 10 AM.

Anyone wanting to participate, please contact Nathan Allison (KJ4RQZ) at 864-884-1373.

Setup will be 3 stations consisting of 2 club owned stations powered by generators for HF, voice, GOTA (get on the air) and CW operations plus 1 privately owned Digital station.

Please feel free to bring any equipment that you may want to experiment with, or otherwise need assistance with.

Commercial power is available in the form of 20 amp/120V, 30 amp/120V RV and 50 amp 120/240V for a fee of $20.00 per connection.

Bathrooms are available on site.

Tent camping as well as RV’s are welcome.

A covered dish dinner will be served at 6 PM with BRARS providing grilled hot dogs, hamburgers, buns and condiments.

Anyone attending dinner is asked to bring a drink of their choice (non-alcoholic) and a covered dish.

Please arrive one hour (5 PM) before dinner time to allow for the correct amount of grilled items to be prepared.

Come on out and enjoy.

ARRL_FieldDay_2019

Club Meeting June 2019

Hello all

We would like to invite you to attend the BRARS June 2019 meeting

When:
Monday June 3 2019

Where:
the Red Cross Building located at

940 Grove Rd
Greenville, SC 29605
United States

In place of a program this meeting we will be discussing and voting on

The 2020 hamfest

The 2019 field day

Trail life and our involvement with them
(Speaker will be Josh Owings (KG4PFJ)

Future programs and projects
(Speaker will be Roberts Danny (KN4BEM)

The creation of a club nonprofit store for the benefit of the membership

And any other items brought to the attention of members present

Note:

Hamfest venders have been contacted and questioned regarding the 2019 hamfest

All feedback as well as interest in attending next years event was positive

Each vendor was asked their opinion regarding the moving of our event to the fall of the year

Feedback was positive there as well

Please make plans to attend and participate in helping move our club forward

Request for hamfest setup assistance

Good afternoon everyone

This is a call for assistance setting up for hamfest

When:
Friday May 3rd starting at 4 Pm until complete

After which supper will be available for those that wish to participate

Where:
Piedmont Interstate Fairground, Spartanburg, SC
Address: 575 Fairgrounds Road, Spartanburg, SC 29305

Camping Friday night is encouraged

Thank you in advance

60th Annual Blue Ridge Amateur Radio Society Hamfest

The 2019 Hamfest is Saturday May 4, 2019, 8.00 AM to 3.00 PM at the Piedmont Interstate Fairground in Spartanburg (address: 575 Fairgrounds Road, Spartanburg, SC 29305)

Prize Package

  • Grand Prize: Yaesu FT-891 HF/50 MHz transceiver [drawing will occur at 2pm]
  • Second Prize: Kenwood TM-V71A 144/440 MHz Dual Band Transceiver [drawing at 1pm]
  • Third Prize: Yaesu FT-65 144/440 MHz Dual Band Transceiver [drawing at noon]

Please note: You do NOT have to be present to win the Grand, Second, and Third prizes.

Ticket Prices

General Admission At the gate: $10 General Admission Internet pre-­­sale: $9

General Admission ticket is good for one outdoor flea market space (first come first served)

Camping & Vendors

Camping & Vendor access is available Friday afternoon after 4.00 PM

  • Tent camping (without power): Free
  • Overnight RV camping (without power): $10 per night
  • Camping with power (120V 20A): $25 per night

Announcements and Information

  • Talk-­­In starting at 6.00 AM via the club’s 146.610 repeater (-­­ Offset, No Tone)
  • Simplex network starting at 7.30 AM on 147.610
  • On Twitter: @BRARS_SC
  • On Facebook: Blue Ridge Amateur Radio Society
  • For the ladies, there will be jewelry and crafts

Vendors

  • JMR Sales
  • The Wireman
  • Silver Tip Antennas
  • DB&J Electronics
  • Battery Specialist Inc.
  • Birds and Breezes
  • Jewelry by Design
  • Laptop Computers and Slimjim Antennas
  • ACDC Electronics
  • …and a variety of others

VE Testing

VE testing provided by West Cars / VE

Testing registration begins at 9.30 AM

Testing begins at 10.30 AM [paperwork must be complete by 10.30 AM]

Food

Provided by Nard’s Barbecue

Will begin serving at 8.00 AM (serving all day)

Questions?

Call Johnny WD4DYH club president at 864-884-1314 or email the club at hamfest@brars.cc

Upstate Hamfest update

We are happy to announce the following main prizes for the Upstate Hamfest on Saturday, May 4th.

Our Grand Prize is a Yaesu FT-891 HF/50 MHz transceiver, drawing will occur at 2pm. Second Prize is a Kenwood TM-V71A 144/440 MHz Dual Band Transceiver, drawing at 1pm. Third Prize is a Yaesu FT-65 144/440 MHz Dual Band Transceiver to be drawn at noon.

Please note: You do NOT have to be present to win the Grand, Second, and Third prizes. For the hourly and door prizes, you DO have to be present to win.

You can get your tickets online now on our website.

Hamfest – Vendor update

Hamfest update:

Vendors attending:   

  • The Wire Man
  • DB&J Electronics
  • Silver Tip Antennas
  • ACDC Electronics
  • Laptop Computers and Slimjim Antennas
  • Battery Specialist Inc.
  • JMR Sales
  • Birds and Breezes
  • Jewelry by Design

Check back for updates