As a Maker, when you want to play IP Camera, you have no choice but to buy ready-made products, high-priced development boards or Raspberry pie addition lenses. Come here! RAK (Ricoh Huilian) WisCam this product is very interesting! It is an IP Camera development kit for Maker. If you are not familiar with RAK, let me introduce it well - this RAKWireless in Nanshan District, Shenzhen, was mainly used as a module in the early days, but now they can have more stuff!
Its products are divided into three categories: IoT class, Amazon Alexa Service development class, and the video class of WisCam played this time, and the price of WisCam is a bit scary! RMB 119 is also compatible with Arduino. The most important thing is that the P2P is from Nabto in Denmark. Do you know that Xiaomi sells 199 yuan? This has no shell, you can save 80 yuan, you can buy four times in the technology park, the lunch will be ~
IP Camera connection technology science time
When connecting to a remote client in a conference room today, the connection method of Relay or P2P is usually used. Let me explain P2P first. This should be used more or less. For example, quite early eDonkey/eMule to Foxy. What? ! Have you heard of it? Didn't use these software to download MP3? ! Is it now that MP3 is using youtube to transfer files? So, the reason why I call Ches is because I am older!
Has KKbox heard it? But now KKbox is not a P2P platform~ because it does not have the user's ability to transfer data. At that time, there were Kuro and ezPeer users transferring between users, not through the server, or P2P.
Then explain Relay, usually P2P technology is unlikely to penetrate all NAT (network address translation), sometimes in the company may be what MIS has a firewall or something, if the home AP is relatively high-end (more than 5,000 yuan Kind), it is possible to use IP Camera.
What does it mean to not wear it? That is, the APP has not shown any image display. At this time, the manufacturer will use the Relay Server to transmit the streaming video to the Relay Server and then to the mobile phone to display the image. This has no effect on the consumer, so I can see it anyway. The image is good, but it is very different for the manufacturer! As long as the Relay Server is used, it usually sells IP cameras in the international market. This Relay Server will be placed on AWS, and AWS charges are quite expensive.
So, as a P2P vendor, Nabto will certainly increase its penetration rate to over 80%! If a hardware vendor works with a company with a penetration rate of only 50% and a Relay Server is not good, what happens in the US?
The answer is: retailers have an endless return every day! APP is difficult to return! The operation is not smooth! Return the image without seeing it!
So friends from the United States are playing direct returns! It’s like to buy a second in seconds. In short, American friends come from the United States! Huh? ! So you know that Nabto is amazing, and it's no wonder that you can get a million dollar investment in the early days.
How fast is WisCam getting started quickly?
Ok, go to the point, this time the protagonist is not Nabto, but RAK Wireless. RAK Wireless has long been immersed in the wireless communication module for a long time. This time, the Maker circle Huanglong, RMB 119, is cheaper than buying a raspberry pie. The placement of the carton packs also shows that the Maker has added a set of development boards that make it fun.
Quick start is really fast, I really don't know what to write in this tutorial (Khan), if you just connect to WisCam locally, just four steps are over:
1. Mobile or tablet download app
2. WisCam power supply 5V
3. Enter your phone or tablet into Setting/WiFi and select WisCam (for example, Wiscam-xx-xx⋯⋯)
4. Watching images
Write as much as you can directly watch the 34-second video:
http://v.youku.com/v_show/id_XMzAwMzUzNDI3Ng==.html?spm=a2h3j.8428770.3416059.1
Ok, what do you feel after watching the movie?
Maker A: "This film is too simple, is it an insult to my IQ?"
Maker B: "I am ready to use my brain to get rid of my hands. You show me this!?"
Can only say ⋯⋯ RAK, you don't want to be so professional! WisCam's quick start, really insightful! Let Maker save a lot of time on the wall, it can also use Video data for zoom (1 to 8 times zoom), video cropping, video overlay! ! ! Why didn't I experience it in the app? It turns out that it is necessary to develop it yourself, so it has even the source code and development files of the app, all on Github (Android/iOS).
protest! RAK is so clear that it is necessary for Maker to play this development board at home. Can you only play Quick Start before you start testing P2P? Of course not. As soon as I got this stuff, I immediately thought that in June 2016, three engineers built "RearVision" in half a year. This is similar to the case that I have done a project for wireless reversing of mobile phones before, but the price of RearVision is only 499 USD, which is definitely not sold in Taiwan. Because we are all accustomed to exporting good materials, we eat very badly (this is the same concept as hungry, don't hungry children?).
In short, first try Latency (delay), the film is here:
http://v.youku.com/v_show/id_XMzAwMzUzNzM4MA==.html?spm=a2h3j.8428770.3416059.1
Then pause the movie and see the red box (as shown below):
The upper/lower part of the above picture is the image received by the mobile phone after being processed by WisCam. The 851 is the online code table of the computer (IE can't open the online code table), and the 701 is the image of the mobile phone. After the delay of 150ms, what is this? Assuming that the delay is more than 1 second, it is possible that after the person hits the vehicle and hears the sound, the camera image appears to be behind the car. When it was first made, 200ms was the most acceptable range, but now it can be faster with RTOS.
One of the unpacking feedback
Here I found a small mistake that is common in the market (if the target group is Maker, you can't take the other party as RD, and you have everything at hand). After plugging the USB cable attached to the development board directly into the computer, only one light will be lit ( As shown in the green box below):
Usually NB is only 500mA if it is USB 2.0, and 900mA will be USB3.0. The development board only lights one light, which means that WiFi is not up, and WiFi is definitely more than 500mA when it is fully transmitting the video frame. So we have to use the Adapter to add a longer USB cable, and the result is two lights. ! Also represents the loss box that the development board is preparing to move at full speed (as shown in the green box below):
Back to the topic, this little mistake does not affect WisCam is a fun development board!
This is the perimeter of the development board:
This is the development board foot map:
This is the development board about me:
WisCam's Camera only has VGA, which is quite enough if you are doing a Baby Cam or watching a cat or cat. But, how can you think of Maker as simple as Maker? Boss, can I change my HD lens? (raised hands)
Conclusion
Introduce here first, this price is too dangerous! too cheap! Hurry and play other functions (P2P connection)~
Wiscam Taobao purchase link: https://item.taobao.com/item.htm?spm=a1z10.5-c.w4002-14938546650.18.638a2e6T0NUOm&id=543901093786
What! ! ! There are even QQ groups! Don't send a message again, come and feel the power of speed!
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