Search found 350 matches

by zoomx
Wed Mar 22, 2017 4:29 pm
Forum: Off topic
Topic: Learning about 433 MHz radios - how?
Replies: 20
Views: 246

Re: Learning about 433 MHz radios - how?

It looks like RFM69s are just (legal?) repackaged SX1231H chips: https://lowpowerlab.com/forum/rf-range-antennas-rfm69-library/rfm69-hoperf-are-they-semtech-clones-or-not/ From https://github.com/lupyuen/LoRaArduino Note: Although not documented, the Hope RFM96 actually supports Semtech's Low Data ...
by zoomx
Thu Mar 16, 2017 2:12 pm
Forum: Off topic
Topic: Learning about 433 MHz radios - how?
Replies: 20
Views: 246

Re: Learning about 433 MHz radios - how?

I am not sure but it seems that these cheap modules (less than 2$) work with OOK modulation, so the pin turn on and off the carrier. They are very simple modules.

There are some other modules that works better.

If you need a network maybe you can consider NRF24 based modules.
by zoomx
Thu Mar 16, 2017 10:38 am
Forum: Off topic
Topic: Learning about 433 MHz radios - how?
Replies: 20
Views: 246

Re: Learning about 433 MHz radios - how?

after that essentially its connecting arduino uart to tx, rx to another arduino's uart I used these modules with Arduino but with other pins, not the serial pin. The communication between cheap modules and Arduino is not a serial communication. I believe that the library was Virtual Wire but there ...
by zoomx
Thu Mar 16, 2017 10:04 am
Forum: General discussion
Topic: Problem reading USB Serial data into Windows
Replies: 6
Views: 110

Re: Problem reading USB Serial data into Windows

Maybe handshake is hardware instead of none?

I use Visual Studio and I don't need to set DTR when writing or reading from a serial port using USB adapters.
by zoomx
Wed Mar 01, 2017 4:31 pm
Forum: Off topic
Topic: New RPi Zero W - with Wifi and Bluetooth
Replies: 28
Views: 356

Re: New RPi Zero W - with Wifi and Bluetooth

RPI has an debian based OS, raspbian, and you have C, python and others minor languages. There are other OS but not very common. Very few program it without OS, bare metal.

It is not fully open source because there is a Broadcom binary that it is not open source.
by zoomx
Fri Feb 24, 2017 11:38 am
Forum: Projects
Topic: $10 O-Scope revisited
Replies: 618
Views: 34327

Re: $10 O-Scope revisited

That sounds smart to me. What others say? :) (who actually understand coding, unlike me :D okay, i understand just a little bit... :) ) This is an automatic way to change code before it is compiled. #ifdef BLUEPILL_BOARD mean that if in the code there is a #define BLUEPILL_BOARD, all the subsequent...
by zoomx
Tue Feb 21, 2017 7:30 am
Forum: Postbag
Topic: Rogers postbag - FM radio band transmitter
Replies: 41
Views: 741

Re: Rogers postbag - FM radio band transmitter

PS. I see a youtube video about building an internet radio using a wireless router, and I have a spare ASUS router which I could install OpenWRT onto (I know it works with DDWRT), but I think thats another project I'll need to add to the list of things to do when I have more free time. I made it wi...
by zoomx
Mon Feb 13, 2017 2:15 pm
Forum: Projects
Topic: $10 O-Scope revisited
Replies: 618
Views: 34327

Re: $10 O-Scope revisited

Very often these mcufriend LCD TFT shields arrive with a printing that says which chip is used inside. I believe that a manual timbre is used.

In the David Prentice TFT library there is a sketch capable of identify the chip in most of the cases.
by zoomx
Fri Feb 03, 2017 8:51 am
Forum: Builds and Announcements
Topic: PHPBB hosting issues and problems at HostGator
Replies: 48
Views: 955

Re: PHPBB hosting issues and problems at HostGator

This post https://www.phpbb.com/community/viewtopic.php?f=466&t=2407181&p=14641891#p14642436 says that Internet Explorer and Edge have no problem. Firefox and Chrome do. I didn' t noticed anything but maybe I was not very.... observant (I don't know it's the right word!). I had some strange ...

Go to advanced search