How to connect DMR828 and DMR858 walkie talkie modules to Arduino with TTL interface?

DMR828 and DMR858 walkie talkie modules are two cost-effective and full-featured digital walkie talkies modules developed by our company. The power is 2W and 5W respectively. Both are compatible with the common analog-standard walkie-talkies on the market and support UHF, VHF, and 350 frequency bands. Work. The module integrates a microcontroller, digital intercom chip, radio frequency power amplifier and audio power amplifier, and other circuits. Customers only need an external power supply, speakers, and other devices to work as a small digital walkie-talkie with 16 adjustable frequency channels.

DMR828 and DMR858 walkie talkie modules are used by many customers. Many customers have asked these two walkie-talkie modules a question. How do DMR828 and DMR858 walkie talkie modules use TTL interfaces to connect to Arduino?

Here, we will answer your question in a unified manner.

Our company designed the data interface of DMR828 and DMR858 walkie talkie modules to be USB ports, but many customers need to use the TTL interface to connect to Arduino. This problem is not complicated. Arduino boards generally have a TTL serial port. We can connect Connect the TXD and RXD pins of the DMR828 and DMR858 walkie talkie modules to the TXD and RXD pins of the Arduino board so that the DMR828 and DMR858 modules can be connected to the Arduino board through the TTL interface.

Our company not only produces DMR series full-featured digital walkie-talkie modules, but also SA series highly integrated professional analog walkie talkie modules. In the field of walkie talkie modules, our company has the most extensive experience and the most professional engineers, and also provides customers with ODM projects, if you have any needs or questions in the field of walkie talkie modules, please feel free to contact us.