Aviancer · @aviancer
60 followers · 635 posts · Server hachyderm.io

Bonus start up video, sweet sounds to my ears!

The VTX also works, though apparently I mounted the camera upside down - but that’s easy to fix :)

#fpv #drone #diy #elecronics

Last updated 1 year ago

Josef 'Jeff' Sipek · @jeffpc
83 followers · 262 posts · Server mastodon.radio

So, what am I making? I'm building a BME280-based temp/pressure/humidity logger. I know I'm not the first and won't be the last.

Once a minute, the gets the current measurements from the via SPI and dumps the raw 8-byte measurement to the serial port. The next step is to make it log the data to an SPI flash as well.

For example, the measurement '5428007e8e004a95' translates to 19.386 degC, 1015.645 hPa, 33.671%rh.

#elecronics #bme280 #atmega48

Last updated 2 years ago

Josef 'Jeff' Sipek · @jeffpc
69 followers · 154 posts · Server mastodon.radio

On an the waveform looks somewhere between a sine and a triangle wave. The 3.5Vpp is probably pushing the transistor a bit too hard and causing distortion. Either way, getting 7.55MHz with essentially no effort is pretty cool.

7.55MHz and 6.4uH yields a capacitance of 69pF. The tester design uses two 100pF capacitors making approx. 50pF in parallel with the crystal. The breadboard and wires could easily provide the other 19pF.

#elecronics #oscilloscope

Last updated 2 years ago

Martin Owens · @doctormo
856 followers · 259 posts · Server fosstodon.org

hey internet. I accidentally blasted my microphone with a heat gun a few weeks back and it now has a whine. This is a picture of the circuit boards. Are there any good guides for debugging this or should i make a bit of ewaste and buy a new one?

#elecronics #debugging

Last updated 2 years ago