And now for something completely different – a biltong box

Another year is close to its end, with the Christmas and New Year / Festive Season upon us. As the post title suggests, something from a little left field: a biltong box! There are nonetheless electronic goodies involved - the box has a display, with a temperature and humidity sensor. The display has in-built [...]

By | 2017-12-25T00:22:00+00:00 Sunday, 24 December 2017|Builds|0 Comments

uSolaire 180: LED grow lamp completed

As eluded to in a previous post, the next project on the books is an LED grow lamp. I've named it informally as the uSolaire 180... Why a grow lamp? Well: one might think an obvious - not necessarily legal, depending on where one lives - reason, but actually it's because my chili plants [...]

By | 2017-10-01T21:09:19+00:00 Sunday, 21 May 2017|Builds|0 Comments

Reflow oven wiring diagram

So on a lazy Saturday afternoon without anything else to do, and to complete the 'build', here is the reflow oven wiring diagram. (Update: it actually took a fair while longer to complete this than intended - work commitments and other projects crying for attention...). Without further ado. Warning/Disclaimer: It should go without saying [...]

By | 2017-10-11T23:45:38+00:00 Saturday, 6 May 2017|Builds|0 Comments

Reflow oven: wrap-up

So the oven is now complete. Profile-wise it's not exactly what is recommended per a solder paste datasheet, but as I've come to understand the specified profile is more complicated: time vs. money in manufacture, what's actually required, etc. And results so far are pretty good! This is also evidenced by another, tougher board to [...]

By | 2017-04-23T21:21:55+00:00 Saturday, 15 April 2017|Builds|0 Comments

Reflow oven: real board 1

So the stencils for the (first) test boards arrived - yay! The stencils were from OSH Stencils and of the polyimide film type. I had no need to invest in stainless steel versions, and if the polyimide film works for test purposes then all the better! Solder was ChipQuick SMD291AX50T3 Sn63/Pb37 No-Clean T3 solder [...]

By | 2017-04-23T09:30:39+00:00 Saturday, 8 April 2017|Builds|0 Comments

Reflow oven: Initial test runs

With the oven now ready to run, it's possible to do some test runs. Yay! Taking the cautious approach - mainly because the stencils haven't yet arrived - this is a first stage of the testing, i.e., simply a number of repeated reflow runs where the temperature is monitored per the thermocouple data from the [...]

By | 2017-03-29T23:15:39+00:00 Saturday, 25 March 2017|Builds|0 Comments

Reflow oven: build basically complete…

Between now and "then" things have come along. The build of the oven is now basically complete, or at least the wiring is now all good, and the oven is operational! No boards have been soldered just yet - now waiting on a couple stencils to arrive, but close indeed... For the record here are [...]

By | 2017-03-27T18:18:56+00:00 Saturday, 18 March 2017|Builds|0 Comments