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- dragonbtv commented on dragonbtv's instructable Arduino Walkie Talkie12 days ago
- dragonbtv commented on dragonbtv's instructable Arduino Walkie Talkie14 days agoView Instructable »
The module is driven by an internal MCU in which all juices are sucked out. The UART is not that efficient...
- dragonbtv commented on dragonbtv's instructable Arduino Walkie Talkie6 weeks ago
and please modify micphone related diagram to the SA828
View Instructable »please read the PDF file of the module carefully as they are totally diffeientbut at least you are closer to the success as there is a noise responding there. great.
- dragonbtv commented on dragonbtv's instructable Arduino Walkie Talkie2 months ago
the latest version is on Step 27
You are running an old version of the sketch!The reason for this display issue is declared in the sketch as: oled.println(F("?????????????????????")); //the "?" was modifried in System5x7.h to 0x02,0x00,0x02,0x00,0x02If you do NOT know how to modify the System5x7.h file, please just search and replace these lines with: oled.println(F("---------------------")); There are totally 9 lines in the latest version.Please simply download and run the LATEST version.BTW, there are A LOT of jobs to do to modify the sketch if you are to change to another RF modulePlease rewrite every line starts with "rfSerial." according to the PDF of SA868
BTW, there are A LOT of jobs to do to modify the sketch if you are to change to another RF modulePlease rewrite every line starts with "rfSerial." according to the PDF of SA868
View Instructable »my email address is dragonbtv@gmail.com, please discuss technical topic right here
- dragonbtv commented on dragonbtv's instructable Arduino Walkie Talkie2 months agoView Instructable »
international shipping is too high, please order your PCB locally by Gerber file
- dragonbtv commented on dragonbtv's instructable Arduino Walkie Talkie2 months agoView Instructable »
no more change except some SMD sizing
- dragonbtv commented on dragonbtv's instructable Arduino Walkie Talkie2 months ago
it is on step 27 now
that's a module from diffent compay, you have to modify every line related to Serial and softSerial
step 27
View Instructable »in step 24, BOM of the PCB version
- dragonbtv commented on dragonbtv's instructable Arduino Walkie Talkie2 months agoView Instructable »
It should be on the last step.
- dragonbtv commented on dragonbtv's instructable Arduino Walkie Talkie3 months agoView Instructable »
please refer to the main loop section of the latest version, you would find out the way how those USB serials, Bluetooth, module are coordinated on communicating at the same time. BTW, please don't call anybody "dear" beside your wife. :)
- dragonbtv commented on dragonbtv's instructable Arduino Walkie Talkie3 months agoView Instructable »
The PA of the module is connected to 3.7v Li-battery directly from within the module, and there is no voltage regulator for the PA. please read the PDF file on Step 12
- dragonbtv commented on dragonbtv's instructable Arduino Walkie Talkie3 months agoView Instructable »
please read Step 22, the detail of external power was talked with photosPDF and Gerber files for PCB can be found and downloaded from Step 22 and Step 25v2.12 and v2.16 are using two layers PCB
- dragonbtv commented on dragonbtv's instructable Arduino Walkie Talkie3 months ago
email sent
PM me your email and I am to send out the latest sketch of v2.24 first
email sent already with attachments73KM6WZM
View Instructable »PM me your email and I am to send out the latest sketch of v2.24 first
- dragonbtv commented on dragonbtv's instructable Arduino Walkie Talkie4 months agoView Instructable »
I chatted with the boss when I ordered those modules, every single module design is third-part orders driven. We have to appreciate the manufacturers who made those orders. The module I am using is from the request of a company who designed a GSM cellphone combined with HT for miners.Yes, all DMRs are Motorola compatible one, the cost for the encoder/decoder just hurt their passion...
- dragonbtv commented on dragonbtv's instructable Arduino Walkie Talkie4 months agoView Instructable »
It is extremely hard to solder the heat sink tube, you have to use special glue...
- dragonbtv commented on dragonbtv's instructable Arduino Walkie Talkie4 months agoView Instructable »
I will take a few pictures next time I am to glue the heatsink. I am to upload the PCB files of v2.16
- dragonbtv commented on dragonbtv's instructable Arduino Walkie Talkie5 months agoView Instructable »
July 1st, 2019The project is finished with two v2.20 built, especially the one with heat tube heatsink!There will NOT be a kits sell cause there is not enough people interested.
- dragonbtv commented on dragonbtv's instructable Arduino Walkie Talkie5 months agoView Instructable »
Jun 26, 2019v2.20 finished:4 layers PCB with over 400 vias, a good heatsink...equipped with 3.7V 1200mAh 503759 Lipo battery and a tiny but strong speaker
- dragonbtv commented on dragonbtv's instructable Arduino Walkie Talkie6 months agoView Instructable »
I was planned on using thin heat sink tube for the PCB version and they are on the way from China, During the 45 days of waiting, I am designing the v2.20 version with 4 layers copper and over 600 vias and I am sure no extra heatsink is necessary...The full sets of PCB v2.16 were uploaded as PDF files.https://www.ebay.com/itm/50x9x1mm-Copper-Flat-Heat-Pipe-Computers-CPU-Cooling-Heatsink-Diy-Rose-Gold/273372311830?_trkparms=aid%3D555018%26algo%3DPL.SIM%26ao%3D1%26asc%3D58654%26meid%3D6d4f6bdbc78b4f7cba1f4c26cb5b2064%26pid%3D100005%26rk%3D2%26rkt%3D6%26mehot%3Dlo%26sd%3D163145794324%26itm%3D273372311830&_trksid=p2047675.c100005.m1851
- dragonbtv commented on dragonbtv's instructable Arduino Walkie Talkie6 months agoView Instructable »
Everything is on Amazon and eBay US, I am thinking of prepare kits including SMT PCB without profit if there are more than 10 requests...
- dragonbtv commented on dragonbtv's instructable Arduino Walkie Talkie6 months ago
05/28/2019 Update: v2.12 PCB version finished06/04/2019 Update: v2.16 PCB version finished
View Instructable »normal soldering skill; one weekend; around $90; multimeter
- dragonbtv's instructable Arduino Walkie Talkie's weekly stats: 6 months ago
- dragonbtv entered Arduino Walkie Talkie in the Arduino Contest 2019 contest 6 months ago
- dragonbtv favorited Arduino Walkie Talkie by dragonbtv6 months ago
I don't know. I wish I had attached a PDF version of the programming guide of 1846, please google and read it if it is not there.