user48874: I succeeded in giving an AT command. My two BL MAC addresses are 21, 13, A03B and 21, 13, A3E2. 
When I want to connect one to the other I use AT+BIND=21,13,A3E2. But then I see Error(7). If I use another BL address from the Internet, it works.
So, why won't my 2 HC05 bind?

user48874: The solution is 
AT+BIND=0021,13,00A03B

NB: Here I just added 00 left side and right side digits

48874: <p>I succeeded in giving an AT command. My two BL MAC addresses are <code>21, 13, A03B</code> and <code>21, 13, A3E2</code>. </p>

<p>When I want to connect one to the other I use <code>AT+BIND=21,13,A3E2</code>. But then I see <code>Error(7)</code>. If I use another BL address from the Internet, it works.</p>

<p>So, why won't my 2 HC05 bind?</p>
 48874: <p>The solution is </p>

<pre><code>AT+BIND=0021,13,00A03B
</code></pre>

<p>NB: Here I just added <code>00</code> left side and right side digits</p>
