[first time usage]

I'm checking this config out with a simple sketch derived from one @ https://www.allaboutcircuits.com/projects/understanding-and-implementing-the-hc-12-wireless-transceiver-module/.

The sketch acknowledges a command from the Serial Monitor and responds accordingly along with an "OK". I have used this sketch countless times before with numerous HC-12 and UNO, and this particular HC-12 functions properly when connected to such.

For the Pro Micro, the command is echoed back instead, which, in my experience, indicates that the HC-12 is not receiving/responding.

The Pro Micro test config is very basic: Pro Micro, HC-12, USB connection, 5 direct jumper connections for vcc, gnd, pins 4-6. Vcc output reads 4.2 volts. I have also tested with an IN4007 in the power connect for the HC-12, but results are the same.

I've swapped HC-12s, and checked out the requisite pins by using another sketch that toggles an led on each. The Arduino IDE is 1.8.2, and I am specifying a Leonardo board. This is the suggestion I found whilst researching.

I have seen a few projects using the HC-12 with the Pro Micro and other small boards, but noticed no special considerations for such.

Have you any suggestions or solutions [even better]?

[first time usage]

I'm checking this config out with a simple sketch derived from one @ https://www.allaboutcircuits.com/projects/understanding-and-implementing-the-hc-12-wireless-transceiver-module/.

The sketch acknowledges a command from the Serial Monitor and responds accordingly along with an "OK". I have used this sketch countless times before with numerous HC-12 and UNO, and this particular HC-12 functions properly when connected to such.

For the Pro Micro, the command is echoed back instead, which, in my experience, indicates that the HC-12 is not receiving/responding.

The Pro Micro test config is very basic: Pro Micro, HC-12, USB connection, 5 direct jumper connections for vcc, gnd, pins 4-6. Vcc output reads 4.2 volts.

I specify:

const byte HC12RxdPin = 4; // "RXD" Pin on HC12
const byte HC12TxdPin = 5; // "TXD" Pin on HC12
const byte HC12SetPin = 6; // "SET" Pin on HC12

SoftwareSerial HC12(HC12TxdPin, HC12RxdPin)

I have also tested with an IN4007 in the power connect for the HC-12, but results are the same.

I've swapped HC-12s, and checked out the requisite pins by using another sketch that toggles an led on each. The Arduino IDE is 1.8.2, and I am specifying a Leonardo board. This is the suggestion I found whilst researching.

I have seen a few projects using the HC-12 with the Pro Micro and other small boards, but noticed no special considerations for such.

Have you any suggestions or solutions [even better]?

[first time usage]

I'm checking this config out with a simple sketch derived from one @ https://www.allaboutcircuits.com/projects/understanding-and-implementing-the-hc-12-wireless-transceiver-module/.

The sketch acknowledges a command from the Serial Monitor and responds accordingly along with an "OK". I have used this sketch countless times before with numerous HC-12 and UNO, and this particular HC-12 functions properly when connected to such.

For the Pro Micro, the command is echoed back instead, which, in my experience, indicates that the HC-12 is not receiving/responding.

The Pro Micro test config is very basic: Pro Micro, HC-12, USB connection, 5 direct jumper connections for vcc, gnd, pins 4-6. Vcc output reads 4.2 volts.

I've swapped HC-12s, and checked out the requisite pins by using another sketch that toggles an led on each. The Arduino IDE is 1.8.2, and I am specifying a Leonardo board. This is the suggestion I found whilst researching.

I have seen a few projects using the HC-12 with the Pro Micro and other small boards, but noticed no special considerations for such.

Have you any suggestions or solutions [even better]?

[first time usage]

I'm checking this config out with a simple sketch derived from one @ https://www.allaboutcircuits.com/projects/understanding-and-implementing-the-hc-12-wireless-transceiver-module/.

The sketch acknowledges a command from the Serial Monitor and responds accordingly along with an "OK". I have used this sketch countless times before with numerous HC-12 and UNO, and this particular HC-12 functions properly when connected to such.

For the Pro Micro, the command is echoed back instead, which, in my experience, indicates that the HC-12 is not receiving/responding.

The Pro Micro test config is very basic: Pro Micro, HC-12, USB connection, 5 direct jumper connections for vcc, gnd, pins 4-6. Vcc output reads 4.2 volts. I have also tested with an IN4007 in the power connect for the HC-12, but results are the same.

I've swapped HC-12s, and checked out the requisite pins by using another sketch that toggles an led on each. The Arduino IDE is 1.8.2, and I am specifying a Leonardo board. This is the suggestion I found whilst researching.

I have seen a few projects using the HC-12 with the Pro Micro and other small boards, but noticed no special considerations for such.

Have you any suggestions or solutions [even better]?