leosedf's blog
Electronics blog
Thursday, December 22, 2016
Tuesday, November 10, 2015
TCL SVC 200 teardown
After some discussions on Techmoan's site I was wondering what's inside that little cam and it seems there is more to that.
Here are some pics, note you have to desolder the remote control antenna to remove the pcb board.
Here are some pics, note you have to desolder the remote control antenna to remove the pcb board.
Below is the wire (antenna) for the remote you have to desolder.
It seems there are some tools for ambarella video processing chips here http://dc.p-mc.eu/
There is a firmware editor here http://dc.p-mc.eu/tools/a7tool (you have to open the A5 binary and select your SVC200 firmware file.
You can extract partitions, kernel etc.
He has also a direct usb download software which allows firmware update gia usb cable. You can get it here http://dc.p-mc.eu/tools/directusb/download
Feel free to donate to this site, he has done a great work.
Ετικέτες
200,
Action,
ambarella,
camera,
editor,
firmware,
helmet camera,
SVC200,
TCL,
TCL SVC,
update,
USB
Saturday, February 28, 2015
BT521 fluke battery analyzer
Here is a quick video of me trying to test batteries with one hand.
Instrument is a Fluke BT521 battery analyzer.
Instrument is a Fluke BT521 battery analyzer.
Ετικέτες
12V,
500 series,
Analyzer,
Battery,
BT521,
Fluke,
internal resistance,
test,
tester
Sunday, July 14, 2013
Vamo simulation. Real world battery test
The guys here http://www.e-cigarette-forum.com/forum/vamo/355592-vamo-battery-thread-16.html were wondering about the performance of the VAMO e-cig with 1 28650 battery or with 2 18350 stacked.
I have some Efest batteries from the last test and awsum140 measured some current consumptions for me.
So we created a "vape" simulation with both batteries, it draws the same power that the Vamo uses during vaping for 5 seconds and rests for 25 seconds. All that to simulate the actions of the user while using it. It's like chain vaping until the battery reaches the 3.3 cut off voltage. (we didn't use the 2.750V cut off since users tend to recharge the batteries at 3.3V)
The 18650 gave us 250 puffs both times. Continuous vaping for 2 hours
The stacked 18350 gave us 477 puffs (?!?) the first time and 479 the second time. Continuous vaping for 4 hours
Seems like using two stacked batteries performs a lot better.
Get the files here:
Efest 18350 525 Vape test
Note: the stacked 18350 batteries ran cooler than the 18650 mainly because the mod draws 1.02A at 7W so there was not so much stressing.
Note: the stacked 18350 batteries ran cooler than the 18650 mainly because the mod draws 1.02A at 7W so there was not so much stressing.
Ετικέτες
18350,
18650,
Batteries,
Battery analyzer,
charging,
discharge,
e-cig,
EFEST,
Live analysis,
Vamo
Saturday, July 6, 2013
Led drivers, Joule thief
I made a few boards of joule thief's, they can be used to light up a white led with a 1,5V battery (or even less).
Here are a few pics.
They are pretty small and can fit inside small DIY flashlights etc.
Monday, June 24, 2013
Cytac batteries
Coming soon a test on cytac batteries and their chargers, i am waiting for their new charger.
Also a teardown of the Sanyo eneloop charger.
Ετικέτες
18350,
18650,
analysis,
Analyzer,
Battery analyzer,
cytac,
discharge,
discharging,
Eneloop
Friday, April 19, 2013
Orbtronic PD-18650 2900mAh IMR high drain
Special thank's tto Roland (awsum140) from the states for sending me batteries to test :)
Ετικέτες
18650,
Analyzer,
Batteries,
Battery,
Battery analyzer,
charge,
charging,
discharge,
discharging,
Live analysis,
Orbtronic,
panasonic
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