Search results for query: hc12

...about building an interface. There is power available on the DB9 connector (+9V on "RI"), that is sufficient to power the Picaxe and attached HC12 Radio transceiver. I performed my initial experiments using Realterm on a PC and it soon became apparent that I had an issue to overcome... The...

Search results for query: hc12 | PICAXE Forum

I can't figure it out so what I would suggest doing is going back to basics. Run the PICAXE at its default frequency, forget about the HC12, forget about the LCD, just try to get consecutive SMS messages sent out of the phone. I don't have the hardware to test but this is what I would start...

...bits to give the Picaxe adequate time to process each received data byte. There should be an AT command for that. I think it is "AT+U8N2" . The HC12 module operates from 3.3 to 6V, 3.2V -5.5V, however the manual recommends no more than 4.5V to eliminate overheating of the built in LDO...

More good news ! Perhaps an issue is that the HC12 Tx rating of 100mW is too powerful for the 433 MHz ISM band. However it "can" be decreased & even readily set to other UHF frequencies that may be legal in particular countries. Fellow Kiwi Rob Rozee even wrote a configuring GUI =>...

Hi, Of course the simplest switch is a "pin-link", for example two header pins (or pads) linked by a bridge. Then you can remove the link for "a long time" to ensure that the HC-12's supply rail falls to zero (eventually). Otherwise, the discharge time of the HC-12's supply decoupling...

Hi AllyCat and PhilHornby, I got one HC12 working (apparently permanently) by installing a switch that allowed me to power the HC12 independently of the Picaxe and using the "low HC12_SET - pause - power the HC12 - pause - configure" method as proposed by you. The other HC12 was irretrievably...

I currently have twelve HC-12's in service and over the years some of them have ceased to function :(. In all cases though, it's been the Radio side that has malfunctioned (going "deaf", but still able to transmit - that sort of thing). The interface to the on-board microprocessor has never...

Hi, You may need a reply from one of the HC-12 experts, but as far as the procedure above is concerned, you need SEPARATED supply rail connections to the PICaxe and to the HC-12. The "obvious" solution is to have a "switch" in series with the HC-12 supply, controlled by a PICaxe pin. That's...

Hi, I have been trying to configure 2 HC12 transceivers using a pgm I have used succesfully before on the 2 HC12s several times. I get "No response" (5 of them) or 5 identical answers containing mostly hex characters (the same every time). I have had the problem before a long time ago. This time...

Voir la doc mentionnée en #19; cliquer sur Manual pour telecharger le pdf! Ben oui voir mon post en #10, et la doc. Plusieurs canaux et plusieurs adresses par canal. Oui, mais ça ne joue pas dans la même cour ! LoRa est une technologie non une marque. La doc que je vous ai indiquée en #19...

...de trouver. https://semtech.my.salesforce.com/sfc/p/#E0000000JelG/a/2R000000HTIE/.wr7MYcDJegmsXUflvtVGp7PiqAzdCaqRKXqRr3J8Y4 Du peu que j’ai pu voir après un rapide survol... c’est « un peu » plus compliqué que le HC12! Nombreux registres qui me font penser au nRf24L01+, protocole des...

Bonjour, Concernant les fakes HC12, voir https://www.thebackshed.com/forum/ViewTopic.php?TID=10443 et mon post ici #7 Pour le LoRa (Long Range) voir https://github.com/StuartsProjects/SX1280_Testing (Stuart est membre du forum) et https://picaxeforum.co.uk/threads/sx126x-lora-modules.31380/...

Bonsoir PieM. Merci pour le compliment. L’etude du nRf24L01+ m’a en effet pris plusieurs mois. Concernant le HC12 je vais reconsidérer et reformuler cette phrase équivoque. Concernant les Fakes modules je n’ai pas d’expérience. Est-il possible des les identifier d’une manière ou l’autre? pour le...

Beau travail ! Je pense qu'il aurait été opportun de parler du risque de tomber sur des fakes HC12 comme précisé dans un autre post. D'autre part en 433MHz, la puissance d'émission > 10 mW est interdite en France, sauf utilisateurs spécifiques. D'où l'intérêt du LoRa. (20km avec 10mW) Il faut...

...programmes spécifiques qui permettent d'accéder à l'ensemble des parametres. Pour les HC 11 et HC 12, voir les applis de Robert Rozee. Pour le HC12 voir le fichier ci joint a renommer en exe. (egalement un pdf tres utile) Il faut bien sûr se munir d'un petit convertisseur USB > série, très...

...told us what is the maximum collector current in Q2, nor which device you're using. 100 mA seems to be a commonly quoted maximum drain of the HC12, but Pete has suggested 200 mA, so perhaps we should assume at least a 10 mA requirement for the current in R2. It will drop about 4 volts (the...

...not clear (to me) which are included in the datasheet specification, or enabled/disabled by the PICaxe OS firmware., If you want to switch the HC12 supply, then certainly a high side switch is highly recommended, but a simple NPN emitter follower might be sufficient if the PICaxe is being...

...hardware and software design in considerable detail before adopting such a strategy. However, it does appear to be the method used by the HC12 in its lowest power mode, i.e. a brief burst of data at 250 kbits/sec "to air" (with its associated reduction of range) followed by a long period of...

...it to fall to less than 100uA during sleep. However, there are other components (than the PICaxe) that may drain current - in particular the HC12 (IIRC a few mA quiescent current in its "low power" mode). I was surprised to see you using 9600 baud communications when the only "lower power"...