Manthink modules

End Devices (Nodes) Hardware
1

For Node experimenters, there is a LoraWAN dev board called Colorbrick not covered here yet afaik.

Any experiences building nodes based on the OM series module are welcome.

Produced by Manthink
Frequency range 410~510MHz(OM422) 860~1020MHz(OM822)
Frequency step 1kHz
RF output power 5 ~ 20dBm
Reception sensitivity -138dBm @292bps
Air bandrate 292bps~5.4kbps
Emission current (typical value) 90mA@20dBm
Supply voltage 2.6~ 3.6V
ESD(Human Body Model) 2000V
Current in transmit mode 90mA @20dBm
Harmonic ≤1GHz:<-36dBm, >1GHz:< -30dBm
CAD/received Current 7mA
Sleep current 3μA
Size 40mm x 40mm
Antenna Impedance 50Ω
Working voltage 2.2V-3.6V
Working temperature -40℃~85℃
Working humidity 0%~95%RH

Link https://www.alibaba.com/product-detail/LoRa-LoRaWAN-developer-kit-code-open_1600158899917.html

2

The interesting specs often concern the software. What is it, what does it do? Can it be modified? Replaced?

And of course what the underlying hardware component is: which MCU, which radio.

3

Im waiting to receive one. Some data on the module I could find:

4
  1. [OM422U] is based on SX1268 & HCF32L19(cortexM0 MCU) support CN470,ALI470,EU433
  2. [OM841U] is based on SX1262 & HCF32L19 , support EU868, AS923,KR920 and so on
  3. UART is available to operate the module realizing the LoRa/LoRaWAN RX & TX by [MT command format]
  4. There are other easier way to use the module.
    4.1 [OM841TA]《OMx41TA-LoRaWAN Transparent Transmission Module Specification》
    4.2 [OM841TB]《OMx41TB-LoRa Transparent Transmission Module Specification》
    4.3 [OM841TC]《OMx41TC-LoRaWAN Transparent Transmission Module Specification》
  5. The module’s MCU can be opened for writing application codes based on MPOS&EB
    Edge-Bus-based secondary development guide
  6. A more easier way for hardware design, color brick is a modular kit for developer realized the IOT device quickly.
    《[SP_CB01_color brick system introduction]》
    7.More reference source codes opened
    https://github.com/ManThink/EBSD.git
    I am new user of the forum, only support 2 links in one post. Many More information, please contact with me.
1 Like
5

Thank you for adding that,
Possibly you refer to TTN documentation https://mensikeji.yuque.com/docs/share/6889ed17-1b4f-4202-b925-2f2be3cf10df?
and module configuration https://mensikeji.yuque.com/docs/share/854923f0-a963-481b-9399-e920da2ddec8?#

6

Maybe helpful is the index of documentation