First larger firmware update for the Voltswagen. For details see Battery Life or ID.Furkan or Schräg.
First part of update downloading 
First part installed 
Second part downloading 
Second part installed 
Done!
EVSE
ID Charger pro EVSE for the new Voltswagen.
Itärastit Landbo
Mistakes on #4 and #8 - slow terrain.
250MHz detector with Fermionics FD80FC photodiode
Here's anoter one-inch-photodetector with a Fermionics FD80FC photodiode and 5k1 transimpedance. Bandwidth around 250 MHz. Predicted dark noise and frequency response with TIASim. The Fermionics diode has a capacitance of only 0.4 pF (80 um diameter active area), giving slightly better bandwidth than a Thorlabs FGA01FC (2 pF capacitance, 120 um diameter active area).
Measured frequency response, compared to TIASim prediction
Iltarastit Solvalla
Sunshine and maybe +11..13C.
Itärastit Siikajärvi
Really nice runnable terrain! Maybe +12 C or so. Felt a bit unsure after #5 when the bigger path towards #6 didn't appear soon enough. Big mistake on #10 where just before the control I searched left instead of right..
Itärastit Haapapuro
A bit difficult terrain until #2, but then really nice until #9 or so when my fitness ran out..
Itärastit Svedängen
Mistakes at the start into #2 (passed really close on the first try) and direction into #3 (should have found the dashed stream?). Otherwise quite easy running along roads and paths. Sunny and +15 C or so.
120 MHz FGA01FC/OPA818 photodetector with 12 kOhm RF
Transimpedance model: TIASim
Previous similar designs:
- 200 MHz photodetector (RF 4k7)
- 400 MHz photodetector (RF 1k2)
Firmaliiga 2021/6 Velskola
Easier course than the last two weeks - mostly running along paths. +15C or so.
