inglewoodpete
Senior Member
After considerable success using HC-12 transceiver modules between PICAXE 28X2 chips, I am trying to configure one of the HC-12 modules with built in USB interface to connect the 433 data with my PC (VB app to be written at a later date). Refer to attached image.
The process seems simple enough. According to the supplier's webpages: If you want to modify parameters 433 wireless module, the user can hold down the button on the side of the module KEY, enter AT mode. Release the button after modifying the parameter KEY, AT mode module exit back to the serial pass-through mode."
My process:
The process seems simple enough. According to the supplier's webpages: If you want to modify parameters 433 wireless module, the user can hold down the button on the side of the module KEY, enter AT mode. Release the button after modifying the parameter KEY, AT mode module exit back to the serial pass-through mode."
My process:
- Plug the module into a spare USB port on my PC.
- Find the COM port allocated by Windows 10 (COM5)
- Open PuTTY and create a serial session COM5:9600,8,1,N,XOn/XOff
- Typing in the PuTTY terminal widow causes a yellow LED to flash inside the module, so I know I'm connected to the HC-12 module
- I read that the HC-12 needs the characters in its commands to be in quick-fire fashion, so I have prepared several configuration commands in a text editor.
- I then copy an AT+command to the PC's clipboard, hold the HC-12 module's button in and paste the command into PuTTY.
- The echo I consistently get back in the PuTTY terminal is "ERROR". This tells me 3 things: (1) The HC-12 is in command mode; (2) The baud rate is correct and, sadly, (3) the command was not recognised.