Lora Shield for ESPea $1.00 excl. shipping
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https://shop.pimoroni.com/products/google-aiy-voice-kit
http://www.microcenter.com/site/content/Google_AIY_Preorder.aspx
US $3.79 + $0.39
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seems to be an adafruit feather clone
looking forward to your test results
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that’s fast …
BSFrance have them on ebay too, there own (same) version - 15 euro shipped
now I’m really curious if it works the same as…
yes it is, only basic testing so far but seems ok - this was my quick source >>>>>
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This the first commercially available antenna that I have seen which matches the 3dBi limit set in the LoRaWan Specification, most of the ones shown before now exceed that level.
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@borroz, great idea starting this thread - another way to share cool gadgets at great prices - well done!!
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ridicolously cheap PCB boards @ https://jlcpcb.com/ 2 dollars for 10 boards (10 by 10cm max) pretty perfect for lora
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US $9.45 incl. shipping
Description:
TEC-06 is constant current electronic load.It uses high-precision DAC loop control technology to control output current for power supply or battery.
So that the current does not change with the voltage changes.It is a load itself, no longer need another external load discharge.
This is a linear electronic load, not a PWM mode
TEC-06 will automatically calculate the product of discharge current and time , to detect the battery capacity.
TEC-06 can also be used as an electronic load to verify the battery or power output capacity.
Parameter:
1>. Max Current: 3.5A; error: <=0.5%
2>. Max Power: 16W
3>. Operating Temperature: -20~70 Celsius
Features:
1>. Can connect computer and draw discharge curve
2>. Encoder switch (shuttle) operation, easy and convenient
3>. Precise current, the full range error is within 0.5%
4>. Integrated fan, discharge power can be up to 16W; and the fan will be auto on/off according to the power
5>. Support 4-wire measurement, and it can measurement battery internal
6>. Max connection voltage 15V, and power-off voltage can be adjusted randomly in the range of 1.0-12V; step length 0.05V
7>. When the battery current is not enough, the detector will automatically adjust set current until the actual current meets the set value;
when the actual current is lower than 40% set value, the detector will end up discharging.
8>. MINI USB interface (5V voltage) power supply, and the actual current consumption is within 240mA
9>. Max detection capacity is 500000mAH (500AH)
10>. Adopt 4-wire battery clip, and it can measure internal resistance
Tiny low cost regulators
DC-DC buck (step down) regulators which are preferable to linear regulators for in most cases. Rated at 3A but so small and costing so little! Size is only 20mm x 11mm and just as thick as the inductor, about 5mm in total. This is not much bigger than a TO-220 package. 6 pieces coming still attached through the pcb notches for €3.50 (free postage to Ireland) and they can be hard-wired to a fixed output voltage with a solder pad jumper.
I got THESE in the post today and the assembly appears to be very high quality, not skewed components, good solder masks/screen etc.
G
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18650 Battery shield V3 (RaspberryPi&Arduino)-in Replacement Parts from Consumer Electronics on Aliexpress.co…
Anyone used these?
https://www.aliexpress.com/item/Wemos-18650-Battery-shield-V3-RaspberryPi-Arduino/32815528424.html