# BlueDuino Rev 2 not appearing in BlueDuino app, Bluo or any other BLE scanning app **URL:** \ **Category:** Arduino\ **Created:** [December 6, 2016, 3:37pm UTC](https://bbs.aprbrother.com/t/blueduino-rev-2-not-appearing-in-blueduino-app-bluo-or-any-other-ble-scanning-app/818 "2016-12-06T15:37:42Z")\ **Posts on this page:** 18\ **Page:** 1
**Author:** ![csouness](https://bbs.aprbrother.com/user_avatar/bbs.aprbrother.com/csouness/32/165_2.png) [@csouness](https://bbs.aprbrother.com/u/csouness)\ **Post date:** [December 6, 2016, 3:37pm UTC](https://bbs.aprbrother.com/t/blueduino-rev-2-not-appearing-in-blueduino-app-bluo-or-any-other-ble-scanning-app/818/1 "2016-12-06T15:37:42Z")
Hi Guys, I have a rev 2 of the blueduino and scanning it on any app and the ZeroBeacon is not coming up. The funny thing is, it came up in the Blueduino app a week ago, have not touched the board since and tried today to do some programming and it decided to hide itself. I’ve uploaded the ABControl sketch and uploaded to the board, any code to light an LED from the output pins works, just no bluetooth. Is there a fix for this? Thanks ---
**Author:** ![aprilpea](https://bbs.aprbrother.com/user_avatar/bbs.aprbrother.com/aprilpea/32/9_2.png) [@aprilpea](https://bbs.aprbrother.com/u/aprilpea)\ **Post date:** [December 7, 2016, 1:52am UTC](https://bbs.aprbrother.com/t/blueduino-rev-2-not-appearing-in-blueduino-app-bluo-or-any-other-ble-scanning-app/818/2 "2016-12-07T01:52:00Z")
Did it work with AT command? Please try these steps: - Upload sketch [hardwareSerialMonitor](https://github.com/AprilBrother/BlueDuino-Library/tree/master/examples/hardwareSerialMonitor) - Test at command “AT”, you will see “OK” - Test at command “AT+VERS?”, you will see the firmware version - Test at command “AT+ROLE?”, you will see the BLE role. you can only scan the module when it work as peripheral role (OK+ROLE:1). ---
**Author:** ![csouness](https://bbs.aprbrother.com/user_avatar/bbs.aprbrother.com/csouness/32/165_2.png) [@csouness](https://bbs.aprbrother.com/u/csouness)\ **Post date:** [December 7, 2016, 11:49am UTC](https://bbs.aprbrother.com/t/blueduino-rev-2-not-appearing-in-blueduino-app-bluo-or-any-other-ble-scanning-app/818/3 "2016-12-07T11:49:39Z")
Thanks for the quick reply pea, Typing those commands into the serial monitor yield no response from the board. ---
**Author:** ![aprilpea](https://bbs.aprbrother.com/user_avatar/bbs.aprbrother.com/aprilpea/32/9_2.png) [@aprilpea](https://bbs.aprbrother.com/u/aprilpea)\ **Post date:** [December 8, 2016, 3:10am UTC](https://bbs.aprbrother.com/t/blueduino-rev-2-not-appearing-in-blueduino-app-bluo-or-any-other-ble-scanning-app/818/4 "2016-12-08T03:10:46Z")
If your phone connected bluetooth automatic, the blueduino can’t also accept any at command. You can’t also scan it by app. Turn off bluetooth of your phone first and try at command again? ---
**Author:** ![csouness](https://bbs.aprbrother.com/user_avatar/bbs.aprbrother.com/csouness/32/165_2.png) [@csouness](https://bbs.aprbrother.com/u/csouness)\ **Post date:** [December 8, 2016, 9:39am UTC](https://bbs.aprbrother.com/t/blueduino-rev-2-not-appearing-in-blueduino-app-bluo-or-any-other-ble-scanning-app/818/5 "2016-12-08T09:39:36Z")
The two devices it previously connected to have their bluetooth off and tried the AT command again, the command still returns no data. The hardwareSerial.ino sketch is printing the “Hello BlueDuino!” fine. ---
**Author:** ![aprilpea](https://bbs.aprbrother.com/user_avatar/bbs.aprbrother.com/aprilpea/32/9_2.png) [@aprilpea](https://bbs.aprbrother.com/u/aprilpea)\ **Post date:** [December 8, 2016, 9:54am UTC](https://bbs.aprbrother.com/t/blueduino-rev-2-not-appearing-in-blueduino-app-bluo-or-any-other-ble-scanning-app/818/6 "2016-12-08T09:54:34Z")
Did you mean there’re two BlueDuinos and they can’t be scanned both? ---
**Author:** ![csouness](https://bbs.aprbrother.com/user_avatar/bbs.aprbrother.com/csouness/32/165_2.png) [@csouness](https://bbs.aprbrother.com/u/csouness)\ **Post date:** [December 8, 2016, 9:57am UTC](https://bbs.aprbrother.com/t/blueduino-rev-2-not-appearing-in-blueduino-app-bluo-or-any-other-ble-scanning-app/818/7 "2016-12-08T09:57:27Z")
Sorry for the confusion, I could previously connect to the board on my iphone and my imac. I’ve switched the bluetooth off on those to try sending AT commands. ---
**Author:** ![aprilpea](https://bbs.aprbrother.com/user_avatar/bbs.aprbrother.com/aprilpea/32/9_2.png) [@aprilpea](https://bbs.aprbrother.com/u/aprilpea)\ **Post date:** [December 8, 2016, 10:06am UTC](https://bbs.aprbrother.com/t/blueduino-rev-2-not-appearing-in-blueduino-app-bluo-or-any-other-ble-scanning-app/818/8 "2016-12-08T10:06:27Z")
Did you add “\r\n” at the end of the at command? There’s no response if no newline flag. Do you have a USB to UART converter 3.3V TTL? Please try to send AT command to BLE module directly if you have one. - Wire the USB to UART converter and BlueDuino - Converter GND to BlueDuino GND - Converter RX to BlueDuino RXI (Serial1) - Converter TX to BlueDuino TXO (Serial1) - Plug the BlueDuino to PC - Wire USB to UART converter to PC - Open a serial terminal software and change baud rate to 9600 - Send at command “AT”. Don’t forget add “\r\n” at line end ---
**Author:** ![csouness](https://bbs.aprbrother.com/user_avatar/bbs.aprbrother.com/csouness/32/165_2.png) [@csouness](https://bbs.aprbrother.com/u/csouness)\ **Post date:** [December 8, 2016, 10:19am UTC](https://bbs.aprbrother.com/t/blueduino-rev-2-not-appearing-in-blueduino-app-bluo-or-any-other-ble-scanning-app/818/9 "2016-12-08T10:19:16Z")
I tried the \r\n with and without the commands to no avail. I will try to source a USB to UART converter 3.3V TTL and let you know the results! ---
**Author:** ![aprilpea](https://bbs.aprbrother.com/user_avatar/bbs.aprbrother.com/aprilpea/32/9_2.png) [@aprilpea](https://bbs.aprbrother.com/u/aprilpea)\ **Post date:** [December 8, 2016, 10:24am UTC](https://bbs.aprbrother.com/t/blueduino-rev-2-not-appearing-in-blueduino-app-bluo-or-any-other-ble-scanning-app/818/10 "2016-12-08T10:24:30Z")
Note: for arduino IDE, just check the option “Both NL & CR” for appending “\r\n” ![serial](https://bbs.aprbrother.com/uploads/default/original/1X/e9c768de6b1653090bc595eb653c9b665fe88dd6.jpg) ---
**Author:** ![csouness](https://bbs.aprbrother.com/user_avatar/bbs.aprbrother.com/csouness/32/165_2.png) [@csouness](https://bbs.aprbrother.com/u/csouness)\ **Post date:** [December 8, 2016, 10:26am UTC](https://bbs.aprbrother.com/t/blueduino-rev-2-not-appearing-in-blueduino-app-bluo-or-any-other-ble-scanning-app/818/11 "2016-12-08T10:26:23Z")
I used those options without \r\n, and No Line Ending with \r\n and nothing came up. I’m going to try the USB to UART method and see what comes up! ---
**Author:** ![csouness](https://bbs.aprbrother.com/user_avatar/bbs.aprbrother.com/csouness/32/165_2.png) [@csouness](https://bbs.aprbrother.com/u/csouness)\ **Post date:** [December 9, 2016, 1:31pm UTC](https://bbs.aprbrother.com/t/blueduino-rev-2-not-appearing-in-blueduino-app-bluo-or-any-other-ble-scanning-app/818/12 "2016-12-09T13:31:17Z")
Hi again, Tried talking to the BLE module directly with the USB to UART and no response came back. I was testing this board for a class next semester. We were hoping to purchase another 25 but the fragility of the module worries me. Is there any distributor in Europe or UK that distributes the blueduino? ---
**Author:** ![aprilpea](https://bbs.aprbrother.com/user_avatar/bbs.aprbrother.com/aprilpea/32/9_2.png) [@aprilpea](https://bbs.aprbrother.com/u/aprilpea)\ **Post date:** [December 12, 2016, 1:57am UTC](https://bbs.aprbrother.com/t/blueduino-rev-2-not-appearing-in-blueduino-app-bluo-or-any-other-ble-scanning-app/818/13 "2016-12-12T01:57:12Z")
Hi, We’re sorry for the module stop working. We can send an additional BlueDuino to you if you place next order. Notice: It’s a static-sensitive devices. I can’t say what cause the problem. > We were hoping to purchase another 25 but the fragility of the module worries me. Is there any distributor in Europe or UK that distributes the blueduino? Sorry. No distributor in Europe or UK yet. You can place order at [Tindie](https://www.tindie.com/products/AprilBrother/blueduino-rev2-arduino-compatible-plus-ble/) directly and leave a message to us. ---
**Author:** ![Luc](https://bbs.aprbrother.com/letter_avatar_proxy/v4/letter/l/9dc877/32.png) [@Luc](https://bbs.aprbrother.com/u/Luc)\ **Post date:** [April 7, 2017, 10:01am UTC](https://bbs.aprbrother.com/t/blueduino-rev-2-not-appearing-in-blueduino-app-bluo-or-any-other-ble-scanning-app/818/14 "2017-04-07T10:01:47Z")
Hi I have the same problem. I just received my BlueDuino Rev 2 and Powered it with the USB cable. But it does not Appear on Bluetooth scan on my IPad mini or my phone Xiaomi Redmi HM 2LTE-CU. I uploaded the hardwareSerialMonitor sketch. And here are the answer of the AT command ![](https://bbs.aprbrother.com/uploads/default/original/1X/0a4a597e1f8686d31e5f23b0dd150d0b022b9826.jpg) Could you please help me? Thanks ---
**Author:** ![aprilpea](https://bbs.aprbrother.com/user_avatar/bbs.aprbrother.com/aprilpea/32/9_2.png) [@aprilpea](https://bbs.aprbrother.com/u/aprilpea)\ **Post date:** [April 10, 2017, 1:53am UTC](https://bbs.aprbrother.com/t/blueduino-rev-2-not-appearing-in-blueduino-app-bluo-or-any-other-ble-scanning-app/818/15 "2017-04-10T01:53:24Z")
Your board should works good because AT command is ok. Did you change the ROLE? ---
**Author:** ![Luc](https://bbs.aprbrother.com/letter_avatar_proxy/v4/letter/l/9dc877/32.png) [@Luc](https://bbs.aprbrother.com/u/Luc)\ **Post date:** [April 10, 2017, 8:05am UTC](https://bbs.aprbrother.com/t/blueduino-rev-2-not-appearing-in-blueduino-app-bluo-or-any-other-ble-scanning-app/818/16 "2017-04-10T08:05:22Z")
I checked the MAC address: AT+ADDR? I got OK+LADD:0x000000000000 Is this normal? ---
**Author:** ![aprilpea](https://bbs.aprbrother.com/user_avatar/bbs.aprbrother.com/aprilpea/32/9_2.png) [@aprilpea](https://bbs.aprbrother.com/u/aprilpea)\ **Post date:** [April 10, 2017, 8:08am UTC](https://bbs.aprbrother.com/t/blueduino-rev-2-not-appearing-in-blueduino-app-bluo-or-any-other-ble-scanning-app/818/17 "2017-04-10T08:08:19Z")
It may work at central role. Please change it first. Run these commands ```auto AT+ROLE0 AT+RESET AT+ADDR? ``` ---
**Author:** ![Luc](https://bbs.aprbrother.com/letter_avatar_proxy/v4/letter/l/9dc877/32.png) [@Luc](https://bbs.aprbrother.com/u/Luc)\ **Post date:** [April 10, 2017, 8:10am UTC](https://bbs.aprbrother.com/t/blueduino-rev-2-not-appearing-in-blueduino-app-bluo-or-any-other-ble-scanning-app/818/18 "2017-04-10T08:10:32Z")
Hi, I entered AT+ROLE0 AT+RESET AT+ADDR? and Ok now I can see it. Thanks for your help.