A second try at the PPS board, this time with the correct footprint for the transistors on the sine-to-square input stage.
Still some bugs left as I had to add a diode on the MCLR pin for the PIC-programmer to work correctly.
First night-orienteering this fall!
Fairly easy course avoiding the big hill. Bad direction out of #1 towards #2, otherwise mostly OK.
Warm +21C or so.
Here's a new revision of the RF-mux board, with a 10-pin ribbon cable for +5V, +3.3V, and SPI-signals from an Arduino MKR Zero.
An evolution of my PICDIV-board from 2016. Takes 10MHz input and produces 1PPS (one pulse per second). This one has a TADD-2-mini inspired sine-to-square converter on the input (far left), a PIC12F675 with Tom van Baak's PICDIV-code (right), an ICSP-header for programming, and output-buffers inspired by the pulse distribution amplifier. A 3-position DIP-switch (middle left) allows config-changes, and a blinking LED indicates 1PPS (middle right).
Fixed a few bugs in the first PCB-revision and will order boards for version two soon. Eventually to be published on github/ohwr - stay tuned..
The third and final Firmaliiga event this autumn was at Pirttimäki. Fairly easy course.
OK to #1 but then too much zigzag to #2. #3 and #4 are the best splits - mostly running along paths.
Out from #4 south towards the path through the woods - slowly. Sticking to the path would have been better? Again not so great down the hill towards #6.
A lot of running along roads on 1-2, 2-3, and 3-4. About 20th place on #4 before any slow parts or mistakes.
No real plan or inspiration on 4-5, just slowly along the straight line. Stupid mistake on 6 where I looked for the control on the wrong hill before finding the same path I took on 1-2.
Firmaliiga final event in Pirttimäki next week.