The air we breath is getting dirtier each day. Based on the study conducted by the Environmental Protection Agency (EPA), the air inside a home might be two to five times more contaminated with pollutants, be it animal dander, cigarette smoke, or soot.
Enter the air purifier. They can be hugely beneficial for allergy and asthma sufferers, as well as anyone who lives near major highways or other pollutant-filled areas, like coal plants. The best ones use fans to cycle air through a series of filters, capturing impurities and jetting clean air back into the room. Choosing the right one comes down to its CADR rating — the measurement for how well an air purifier actually works. Aside from that, the right type of filter — a true HEPA is key — and making it sure it can accommodate the size of room you want will have you breathing easy.
Breath Happy Air purifier performs way above the minimum expectations set by CADR because it uses several air filtration stages.It is also equipped with UV Light and IONizer to ensure that bad odors and contaminant are eliminated effectively.
Here are the images:
Ideally, air purifiers can remove the existing air contaminants but it is not finite, so for example the pollution directly comes from the exhaust of a car, the device due to its small size could not do miracle to remove all pollution coming from the car. It is better to get rid of the source first but does not yet guarantee that the car is only the source there are other sources inside the house and these sources does not produce air pollution as fast as the car or the smell from your neighbors while they are cooking. This is where the device can perform well. Another observation I found while using the device is that it could not suck in the air inside a room it needs an assistance from an electric fan to effectively keep the air circulating inside the room so that all air particles and contaminants will be constantly moving and as they go near the device, they get sucked in and purified.
I used to live in a neighborhood wherein I forget to close the window, some people will intentionally leave their car running the whole night just below my window or someone will smoke or cook a food that emits really pungent odor. So each night, I make sure that the whole room is sealed with very little air from out side coming in and I use this airpurifier device to get rid of any remaining air pollutants and of course an electric fan to keep the room cool and keep the air circulating.
I dont expect everybody to experience the same thing I did but as this device is necessary for any circumstances since there is car everywhere, people cook their food, people smoke, there paints on the walls and all over the house.
Monday, April 23, 2018
Wednesday, March 7, 2018
Electronic Device Assembly Business
Nowadays with the miniaturization of machines, small businessmen or engineers with brilliant ideas can easily compete with the giant players. Production machines used to be available only to people with huge funds has become cheaper and people that can afford to buy a car can easily invest their money in these machines to start an electronics assembly business from pcb fab to enclosure. And the best part is all these machines can easily fit on a small apartment.
The machines needed to start the business are the folliwing:
1. Design and Prototyping Equipments
2. Production Machines
The machines needed to start the business are the folliwing:
1. Design and Prototyping Equipments
- Personal Computer
- Mini Cnc(90mm x 120mm work area) for pcb prototyping
- 3d Printer for the prototyping of enclosures
- Laser Cutter for enclosure porotyping
- Oscilloscope/Multimeter and other tools
- CAD Software
2. Production Machines
- Pick and Place Machine
- Cnc Router-300*400
- Reflow Oven
- Pcb Stencil Printer
- Mini Plastic Injection Machine
- Laser Cutter- 300*400
All the above mentioned machines could only cost about the same price as a brand new Toyota Vios or less than 1Million pesos.
The business is ideal for contract manufacturing or would cater to the market where inventors require to produce less than 100 units for experimenting how their product will be accepted by their target market. This market segment is where I belong because I have very limited budget. Based on my experience, the creation of the plastic mould itself is already unaffordable because it would cost around Php100,000(this is made in China because somebody has told me that the mould used in mineral water bottle caps was worth Php 375000 done locally) already and the manufacturer only accept a minimum of 1000 units. Plastic moulds can already be 3d printed because there are filaments that only melts at 210 degrees celcious while thermo plastics(the material used in plastic injection) easily melts at 130 degrees.
The equipments are also ideal and must haves for every school and/or Univerisities because these machines are also being used by the industry so it is good for students to have hands on experience and if they have access to this equipments they will be encourage to be creative and who knows they could produce new products that could become like Samsung or Apple someday. The sales of both companies is enough to make the Phillippines become a very rich country.
Monday, February 19, 2018
Create a powerful Bluetooth based Network of Beacons
Beacons are not just for increasing sales or giving out more interactive physical environment to enhance user's experience. Beacons can be a powerful tool to detect patterns before a major catastrophe can happen resulting in the protection of properties and life.
The Kit includes the following beacons(excluding the Apps Factory Beacon):
C7:
E6:
G1(Gateway):
I3:
I7:
A network of sensors for monitoring temperature and humidity, detect if an object has moved when should not have moved, an employee forgot to close the window or door, an employee stayed too long at the pantry or know how many customers checked a certain product are just a few of the useful data that can be collected with the networked beacons.
The above figure shows all the necessary beacon types one will need to implement a networked beacons.
Here are the actual images of the sensors and the gateway:
The Kit:(This is a great package to test a lot of use case scenarios. Available at olx.)
The Kit includes the following beacons(excluding the Apps Factory Beacon):
C7:
Size: 90 x 60 x 4 mmE2:
Ibeacon Only
Disposable(Battery can not be replaced)
This is an ideal substitute to rfid badges
Size: 72 x 72 x 18mm
Ibeacon + EddyStone
External ON/OFF switch
Battery can be replaced
E6:
Size: 42.5 x 23.5 x 5.3mm
Ambient Light Sensor
Battery can be replaced
G1(Gateway):
Size: 150 x 150 x 36mm
Bluetooth to Wifi Gateway
MicroUSB Power Input(5V1A)
I3:
Size: 72 x 45 x 22mm
Ibeacon Only
200m Range
Battery can be replaced
I7:
Size: 50 x 50 x 15mm
Ibeacon + EddyStone + Accelerometer
External On/Off Switch
Battery can be replaced
S1:
Size: 70.6 x 38 x 17.8mm
Ibeacon Only + EddyStone + Temperature + Humidity Sensor
Battery can be replaced
Apps Factory Beacon with Buzzer:
Wednesday, February 14, 2018
IT Company and Manpower Agency
An IT Company develops its own products and sells them to end users. They own the copyrights and their products are original.
A Manpower Agency recruits individuals and deploy them to their so called "client". These manpower agencies always dominate job sites and facebook groups for programmers.
There is a big question why manpower agencies name their companies as IT Companies to disguise themselves as IT Companies. A big question is why do they do this? This tactics originates from the USA and usually funded by the Chinese with Indians as their partners where ponzi schemes abounds.
I was lured into this because I was really in need of money and these scammers offers job with no interviews but offers no security but I was in it for the quick cash and I am not ignorant that these people are actually scammers they will say they are an IT Company which I dont believe or shoyld I say never believed at all. These are usually females walking all over the metro they easily fill in any available space like when you're eating at a mall and there is a vacant seat, 99% of the time, it will be filled up by a female recruiting or selling anything under the sun or when you ride an fx or jeepney, 99% of the passengers is always females. I am not a female hater I have just observed that their numbers is way too much to take. It is just too abnormal and vommiting. My mom does not go out much nor my relatives nor our neighbors. Is living in a small space makes them go out and hunt for something all the time? Is there someone that tells them they should always stay on the street? I dont see them buying, they just walk all over and keep on riding public transport. I just wonder what they feed on.
These females are so proud of their jobs, I've read an article written by these females and they think of themselves as IT managers as she wrote, the client complained that she gave them a junior but they asked for a senior. I just could not imagine that they treat programming jobs as a commodity this female described in her article how she was able to pull out the junior and replaced him with a senior. It was a glorified scamming scheme and yet she's so proud of it.
Update:
I applied for a job at a certain tech company and not surprised that all recruiters again are females, but did not succeeded because it was not my primary skills and had not used it professionaly.
While on my way home, a female sat beside me and during our journey she put her sweaty arms on top of my legs which is very unusual. She also pretends looking at her cellphone but was somewhat wants to tell me something, this behavior is somewhat similar to those females in the office of the client of the agency that I am referring to in this post. (As I recall correctly when I am still working at the agency's client, there is not a day where their females keep looking at me as if I am a walking cash)I was waiting for her to say something but the vehicle stopped and a passenger got out so I immediately stayed away from this female and a manong sat between us. After a few minutes a sports car passed by and the female looked at me as if she wants me to buy her a sports car, that made me conclude that she was a well you know. She could have been tracking me and the "sitting beside me" incidence is not a coincidence. She could have been tracking me even when I am still at the office where I am applying. I heard that outsourcing from foreign clients usually involves in sex trade, but not all of course but with this incident, I am not surprised.
Even when I was on an airplane going to Thailand which was almost 10yrs ago, those Pinay looking ladies at the airplane exhibited similar behavior. They see single traveling male as a walking cash. This is why HIV is getting a big problem besause a lot of companies are very discreet, they should show their true colors to prevent hiv.
A Manpower Agency recruits individuals and deploy them to their so called "client". These manpower agencies always dominate job sites and facebook groups for programmers.
There is a big question why manpower agencies name their companies as IT Companies to disguise themselves as IT Companies. A big question is why do they do this? This tactics originates from the USA and usually funded by the Chinese with Indians as their partners where ponzi schemes abounds.
I was lured into this because I was really in need of money and these scammers offers job with no interviews but offers no security but I was in it for the quick cash and I am not ignorant that these people are actually scammers they will say they are an IT Company which I dont believe or shoyld I say never believed at all. These are usually females walking all over the metro they easily fill in any available space like when you're eating at a mall and there is a vacant seat, 99% of the time, it will be filled up by a female recruiting or selling anything under the sun or when you ride an fx or jeepney, 99% of the passengers is always females. I am not a female hater I have just observed that their numbers is way too much to take. It is just too abnormal and vommiting. My mom does not go out much nor my relatives nor our neighbors. Is living in a small space makes them go out and hunt for something all the time? Is there someone that tells them they should always stay on the street? I dont see them buying, they just walk all over and keep on riding public transport. I just wonder what they feed on.
These females are so proud of their jobs, I've read an article written by these females and they think of themselves as IT managers as she wrote, the client complained that she gave them a junior but they asked for a senior. I just could not imagine that they treat programming jobs as a commodity this female described in her article how she was able to pull out the junior and replaced him with a senior. It was a glorified scamming scheme and yet she's so proud of it.
Update:
I applied for a job at a certain tech company and not surprised that all recruiters again are females, but did not succeeded because it was not my primary skills and had not used it professionaly.
While on my way home, a female sat beside me and during our journey she put her sweaty arms on top of my legs which is very unusual. She also pretends looking at her cellphone but was somewhat wants to tell me something, this behavior is somewhat similar to those females in the office of the client of the agency that I am referring to in this post. (As I recall correctly when I am still working at the agency's client, there is not a day where their females keep looking at me as if I am a walking cash)I was waiting for her to say something but the vehicle stopped and a passenger got out so I immediately stayed away from this female and a manong sat between us. After a few minutes a sports car passed by and the female looked at me as if she wants me to buy her a sports car, that made me conclude that she was a well you know. She could have been tracking me and the "sitting beside me" incidence is not a coincidence. She could have been tracking me even when I am still at the office where I am applying. I heard that outsourcing from foreign clients usually involves in sex trade, but not all of course but with this incident, I am not surprised.
Even when I was on an airplane going to Thailand which was almost 10yrs ago, those Pinay looking ladies at the airplane exhibited similar behavior. They see single traveling male as a walking cash. This is why HIV is getting a big problem besause a lot of companies are very discreet, they should show their true colors to prevent hiv.
Monday, February 12, 2018
An Update to the Ibeacon Scanner App for Android
I have found a time to review the source code of the Ibeacon Scanner App and it would be easy to add the feature to include scanning Eddystone Beacons. To do this, the file DeviceScanActivity.java needs to be modified to detect the 3 Eddystone frames(UID, TLM, URL).
Here is the portion of the file that needs to be modified:
The variable patternFound was used to detect the ibeacon pattern and the scanRecord variable currently contains the data being processed and which is being examined whether it contains the ibeacon pattern. And from this, we can already insert the code to identify the current contents of scanRecord if it is an Eddystone pattern.
Here is the portion of the file that needs to be modified:
public void onLeScan(final BluetoothDevice device, final int rssi, final byte[] scanRecord) {
int startByte = 2;
boolean patternFound = false;
while (startByte <= 5) {
if ( ((int) scanRecord[startByte + 2] & 0xff) == 0x02 && //Identifies an iBeacon
//Identifies correct data length
((int) scanRecord[startByte + 3] & 0xff) == 0x15) {
patternFound = true;
break;
}
startByte++;
}
if (patternFound) {
//Convert to hex String
byte[] uuidBytes = new byte[16];
System.arraycopy(scanRecord, startByte+4, uuidBytes, 0, 16);
String hexString = bytesToHex(uuidBytes);
//Here is your UUID
String uuid = hexString.substring(0,8) + "-" +
hexString.substring(8,12) + "-" +
hexString.substring(12,16) + "-" +
hexString.substring(16,20) + "-" +
hexString.substring(20,32);
mUUID[mElems]=uuid;
mRSSI[mElems]= String.valueOf(rssi);
mElems++;
//Here is your Major value
int major = (scanRecord[startByte+20] & 0xff) * 0x100 + (scanRecord[startByte+21] & 0xff);
//Here is your Minor value
int minor = (scanRecord[startByte+22] & 0xff) * 0x100 + (scanRecord[startByte+23] & 0xff);
runOnUiThread(new Runnable() {
Thursday, December 28, 2017
Eddystone URL Encoding : A Beginner's Guide
For beginners who need to know how to convert url into UINT8_T, This can be a very helpful information:
To begin with, beginners need to know exactly what the URL frame contains and here is the details:
The first 9 bytes of the frame are just prefix. To check the content of the prefix value, see the picture below:
The 10th and 11th byte is constant having the value "AAFE". And starting on the 12th byte is the actual eddystone frame which is broken down into the following:
The URL prefix have constant designated values:
The URL Expansion also have constant values:
And the remaining strings in url are converted to hex ascii codes. The URL is 17 bytes including the expansion value.
Here is the raw data from nRF Connect App:
And here is the actual raw data:
To Interpret the data
0x06D696E657774656368 when converted to string is "minewtech". I used the foloowing website for the conversion:
http://www.unit-conversion.info/texttools/hexadecimal/#data
To begin with, beginners need to know exactly what the URL frame contains and here is the details:
The first 9 bytes of the frame are just prefix. To check the content of the prefix value, see the picture below:
The 10th and 11th byte is constant having the value "AAFE". And starting on the 12th byte is the actual eddystone frame which is broken down into the following:
Frame Specification
| Byte offset | Field | Description |
|---|---|---|
| 0 | Frame Type | Value = 0x10 |
| 1 | TX Power | Calibrated Tx power at 0 m |
| 2 | URL Scheme | Encoded Scheme Prefix |
| 3+ | Encoded URL | Length 1-17 |
The URL prefix have constant designated values:
URL Scheme Prefix
The URL Scheme Prefix byte defines the identifier scheme, an optional prefix and how the remainder of the URL is encoded.
| Decimal | Hex | Expansion |
|---|---|---|
| 0 | 0x00 | http://www. |
| 1 | 0x01 | https://www. |
| 2 | 0x02 | http:// |
| 3 | 0x03 | https:// |
The URL Expansion also have constant values:
| Decimal | Hex | Expansion |
|---|---|---|
| 0 | 0x00 | .com/ |
| 1 | 0x01 | .org/ |
| 2 | 0x02 | .edu/ |
| 3 | 0x03 | .net/ |
| 4 | 0x04 | .info/ |
| 5 | 0x05 | .biz/ |
| 6 | 0x06 | .gov/ |
| 7 | 0x07 | .com |
| 8 | 0x08 | .org |
| 9 | 0x09 | .edu |
| 10 | 0x0a | .net |
| 11 | 0x0b | .info |
| 12 | 0x0c | .biz |
| 13 | 0x0d | .gov |
| 14..32 | 0x0e..0x20 | Reserved for Future Use |
| 127..255 | 0x7F..0xFF | Reserved for Future Use |
And the remaining strings in url are converted to hex ascii codes. The URL is 17 bytes including the expansion value.
Here is the raw data from nRF Connect App:
To Interpret the data
| Byte offset | Field | Value |
|---|---|---|
| 0 | Frame Type | 0x10 |
| 1 | TX Power | 0x04 |
| 2 | URL Scheme | 0x00 = "http://www." |
| 3+ | Encoded URL | 0x06D696E65777465636807 The last 2 digits "07" is the URL extension for ".com" |
http://www.unit-conversion.info/texttools/hexadecimal/#data
Combining the decoded data that we will get "http://www.minewtech.com"
Sunday, December 24, 2017
Google Nearby Troubleshooting Guide and the Minew Eddystones
This serves as a continuation of my post Google Nearby 101. As I have mentioned in my previous post, there are a bunch of cons that a developer should be aware of using Google Nearby. In summary, here are the cons:
One important information that I have not mentioned in my previous post although it is not con but it is very important is that the URL must be "https" other than this, the configuration will not work.
Knowing the cons can help in speeding up the development of Apps. Another important aspect to take note of is that the Nearby Service is not in the hands of developers and there are occasions when Google shuts down the service which may trick other developers which will make them think that Google NearBy is not stable. Based on my personal experience this is how I was able to determine that when my smartphone is not able to get the notification and the cause is that the Google Nearby Service is not running is as follows:
The Hardware
For some other reasons, knowing better the Eddystone being used can also be very important. As a developer, your knowledge of how the eddystones work should be at leas above average or at least know more than the end-user. You should be very familiar how it operates and know when the battery is still fully charged.
The eddystones I am using(Minew I6 models) operates this way:
- smartphone has to be connected to the internet
- the screen must be opened to receive the notification
- bluetooth and location services must also be turned on
- notification had no sound
- the notification disappears all by itself after 10 to 20 minutes(sometimes less than 2 minutes)
- once the notification is deleted, it will not reappear too soon because of google's standard notification backoff policy
One important information that I have not mentioned in my previous post although it is not con but it is very important is that the URL must be "https" other than this, the configuration will not work.
Knowing the cons can help in speeding up the development of Apps. Another important aspect to take note of is that the Nearby Service is not in the hands of developers and there are occasions when Google shuts down the service which may trick other developers which will make them think that Google NearBy is not stable. Based on my personal experience this is how I was able to determine that when my smartphone is not able to get the notification and the cause is that the Google Nearby Service is not running is as follows:
I used several apps to check if my eddystones are working like the following:
I use these 3 apps to confirm if the source of error is coming from the Google Nearby Service using the logic: "My eddystones are working but I am not able to receive the notification but I confirm that a few minutes ago, it was working fine."
- Ibeacon Detector. This app when run in Android 6.0 shows the different frames coming from the eddystones by refreshing the screen each time it receives the new frame. If there is no new frame received, the screen does not refresh so I know when the eddystones is not working.
- nRf Connect App. This app does the same thing as the Ibeacon Detector app but it identifies the frame type and shows each values it receives with proper labeling like the temperature, uuid, instance id, etc. so this is better the Ibeacon Detector App.
- BeaconSet+. This app shows all the frames it received and it does not refresh the screen. It will not be able to detect the eddystones if the datat it receives is incomplete.
The Hardware
For some other reasons, knowing better the Eddystone being used can also be very important. As a developer, your knowledge of how the eddystones work should be at leas above average or at least know more than the end-user. You should be very familiar how it operates and know when the battery is still fully charged.
The eddystones I am using(Minew I6 models) operates this way:
- Upon insertion of the battery, it goes to connectible mode for 1 minute. During this mode, it will not transmit the URL and TLM frames.
- You can use the nRF Connect to configure the eddystones while in connectible mode.
- Google Nearby will not work during this 1 minute period.
- I determine if the battery charge is weak when I put 2 beacons in close range which will make them compete to get their signals be received by other devices, and the ones that loose is the one with weak battery charge. Although the measured battery charge level shown in nRF Connect can also be accurate.
For now, all of this information is based on my personal experiences which I am so willing to share.
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