Tindie
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Tlera Corp
Gnat LoRa+GNSS Asset Tracker
$79.95
LoRaSensorTile
$59.95
Dragonfly STM32L476/96 Development Board
$29.95
Ladybug STM32L432 Development Board
$14.95
Cricket LoRa/LoRaWAN/GNSS Asset Tracker
$79.95
Butterfly STM32L433 Development Board
$17.95
Long Cricket LoRa/LoRaWAN/GNSS Asset Tracker
$79.95
MPU9250 Add-Ons for Ladybug
$19.95
SPI Flash Memory Add-On for Ladybug or Butterfly
$11.95
Micro SD Card Reader for Butterfly
$9.95
Ladybug Flight Controller
$49.95
Firefly BLE Development Board
$29.95
About
One-man maker shop with a focus on appallingly small, value-added products. Specialties include motion sensing and motion control applications.
If you don't see what you want, let me know what it is, I might be able to help!
See here for my story: https://www.maker.io/en/interviews/2016/interview-with-kris-winer---pesky-products
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Reviews
Jc | June 18, 2021
Still going strong a few years later
For Grasshopper LoRa/LoRaWAN Development Board
One of the boards was in what I had mistakenly thought was a waterproof box for 18 months of wet and windy weather. I only realised the box wasn't waterproof when I took it down after a year and a half to change batteries - the board was still running perfectly though (we probably get more rain in Ireland than Kris gets in Nevada!).
Gerald | Jan. 22, 2021
Very nice board!
For Dragonfly STM32L476/96 Development Board
Los of possibilities with this one!
William | Dec. 20, 2020
Compile issue for LSM303AGR and MAX31855 breakout boards
For Grasshopper LoRa/LoRaWAN Development Board
C:\Users\User\Documents\Arduino\libraries\Adafruit_BusIO-master/Adafruit_SPIDevice.h:37:43: error: 'SPI_BITORDER_MSBFIRST' was not declared in this scope
BitOrder dataOrder = SPI_BITORDER_MSBFIRST,
^
C:\Users\User\Documents\Arduino\libraries\Adafruit_BusIO-master/Adafruit_SPIDevice.h:42:43: error: 'SPI_BITORDER_MSBFIRST' was not declared in this scope
BitOrder dataOrder = SPI_BITORDER_MSBFIRST,
^
exit status 1
Error compiling for board Grasshopper-L082CZ.
I really need these to work with the grasshopper board but do not know how to fix this issue. Help needed.
Thank you
Bill
Hiroshi | Dec. 8, 2020
It is a great product!
For Grasshopper LoRa/LoRaWAN Development Board
I think it's an inexpensive and good quality product.
I would like to save average current as described by "Grasshopper power usage".
However, this has not been possible.
In the article, the CPU clock speed is reduced to 32MHz, 16MHz and 4MHz to reduce the average current uses.
But I don't understand how to reduce the clock speed.
How should I program it?
and I have one more question.
This is not the low current expected in the Arduino sample sketch "LoRaWAN_DeepSleep".
It uses about 4mA in Deep Sleep. What is missing to make the current used to be μA?
Response from Tlera Corp | Dec. 9, 2020
The clock speed is chosen in the Arduino IDE tools menu before flashing. There is also a dynamic way to change the clock speed while running a program.
Not sure why you are having trouble getting low current when the Grasshopper is in STOP mode. I usually measure 2.1 uA when I disable the power on led or ~300 uA when I don't.. I am not sure how you could be getting 4 mA. Are you measuring current with the USB connected? In this case, the Grasshopper will never enter STOP mode.
Please e-mail me at tleracorp.gmail.com so we can figure out what the problem is.
Kris
Brett | Sept. 7, 2020
Great Product, Great Support
For Grasshopper LoRa/LoRaWAN Development Board