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rPi4: Out of box ~ SDR w/rPi4

This is where I'm recording my noodling with the Raspberry Pi4 kit that I bought:


rPi4 units have consistently been very expensive and hard to get, lately, but apparently a lot of these CanaKits either went unsold or the inventory issues haven't rippled yet. Here are some unboxing photos, kinda, since I already put the Pi together and have it up and running.

I didn't spend a lot here -- less than $200, if that much. All these things were bought online from bulk suppliers, so they're relatively easy to acquire:

The rPi4 and a HackRF One SDR receiver

Here are the rPi4 and the HackRF One SDR receiver I bought separately. They're both built out and mounted on a yoga block (it's the cheapest form of non-conductive foam I can buy):


Breakout board and ribbon cable

This is a cool little starter board for pi projects that comes with the kit:


and it comes with a ribbon cable to match:


Other kit pieces

Other kit pieces, some from the SDR kit, include the following.

Some antenna coax


Boot media for the rPi:


Jumper wires for the rPi4:


An on-off switch for the rPi4


Several SDR antennas


A small set of electronic components


Extra components

I also bought some extra components through a bulk supplier.

Some small circuit boards


Some assorted standard capacitors


I also bought some assorted electrolytics as part of the same buy, but don't think I nabbed a pic.

Some assorted diodes


A whole bunch of assorted LED in various sizes


Assorted rheostats


AKA potentiometers, or variable resistors.

A ton of assorted resistors


I was surprised by how many came in this bulk kit, on trees, no less.

Various assorted transistors


And lastly, a metric ton of variable length wires


These are bent into U shapes for easy soldering, and insulated on the bridge of the "U".

A lot can be had for a little

I suppose since fewer people work directly with discrete components, the prices have dropped. Anyway, now I have to actually do something with these!

How I put the Pi together initially

There was almost nothing to it; I had to:

  1. Put the Pi board in the case (apparently important to do that first -- static?).
  2. Peel and stick the heat sinks onto the chips that have a place for them. I think there were two of them, but I forget. It's obvious where they go.
  3. I went ahead and hooked up the cooling fan. If you do it wrong, the system won't come up in bootable configuration, but nothing will break. I think I got it wrong the first time.
  4. I had to insert the SD card (whatever it's called) to give it a system to boot.

That's it for the quick setup. Of course I had to hook up a keyboard, mouse, HD monitor, and power. I use a little 7-inch monitor that I share with the door-cam I use to know when my cat wants in and out of the house. For a keyboard, I use one of those little roll-up silicon USB keyboards, and a wireless mouse. Not too hard to set up, nor too shabby.

Changed 2022-09-24 Sat 11:35 in Crane Creek.
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