For who asked yesterday: My late 70s SABA Donau radio. Yes, It’s working 100%. LW, MW, SW, VHF/FM …but to which I also added a web-radio ‘band’. Used an ESP32 controller and WiFi. Sixteen preset stations. Hall Effect transistors work with the tuning dial scale. Fake tuning whistle then station announced. Rear ambilight magic eye indication. A ‘Zen’ mode with NTP clock and hourly announcement. Setup with a config.json file. Fully server configurable on any browser. See my design on Hackster, GitHub, schematics, PCBs and build details:
https://t.co/AlROQ6wp14
Minimally invasive modification. No retro radios were hurt in this undertaking. #saba_radio #sabaradio #hamradio #amateurradio #webradio
Homing pigeons orient themselves by the Sun’s position under sunny skies and rely on their magnetic sense when it is cloudy.
Under overcast conditions, homing pigeons with their normal liver macrophages had little issue flying a 19-kilometer route for which they had been trained.
When injected with clodronate liposomes that knocked out the liver macrophages, the pigeons could navigate the route without issue when it was sunny.
Under overcast skies, however, homing pigeons with depleted liver macrophages struggled mightily to find their way home—suggesting the immune cells play a role in the birds’ magnetic sense.
Learn more: https://t.co/7TmzQAvvnu
#ThrowbackThursday: A perfect business card for a data scientist! Paul Klinger designed an ATtiny3217-powered PCB that runs a CNN to classify 5x5 pixel digits and shows the internal activations of each layer! https://t.co/QX0U9EHzeS