💬 Button size radionode with sensors swarm extension
-
Great! One question though, is everything already soldered and if so is there an option to for 868MHz?
-
Great! One question though, is everything already soldered and if so is there an option to for 868MHz?
-
@bjornhallberg if you want you can just order pcb and build your own node
@gohan Yeah I could but I'm just too lazy :-) There are a lot of components to source from AliExpress before anyone can build these boards. It would take months even if there aren't any errors in the BOM or lost packages from China.
-
@gohan Yeah I could but I'm just too lazy :-) There are a lot of components to source from AliExpress before anyone can build these boards. It would take months even if there aren't any errors in the BOM or lost packages from China.
-
@bjornhallberg since @Koresh is still in the early production stage, I think he can manage to make a few with a different radio, given of course he has the 866 mhz modules available 😁
-
If possible I would also like the option to chose 868 Mhz or be able to buy board without radio.
-
If possible I would also like the option to chose 868 Mhz or be able to buy board without radio.
@Cliff-Karlsson
@bjornhallberg
I have some assembled boards without the radio. You can buy them here https://www.ebid.net/eu/for-sale/arduino-ide-compatible-coincell-powered-controller-ready-for-rfm69cw-hcw-radio-156711327.htm . I just reminding this board has a rfm69HCW footprint but you can solder rfm69CW modules with the pcb adapter which I made. Of course I will supply the adapter with the main board. -
@Cliff-Karlsson
@bjornhallberg
I have some assembled boards without the radio. You can buy them here https://www.ebid.net/eu/for-sale/arduino-ide-compatible-coincell-powered-controller-ready-for-rfm69cw-hcw-radio-156711327.htm . I just reminding this board has a rfm69HCW footprint but you can solder rfm69CW modules with the pcb adapter which I made. Of course I will supply the adapter with the main board.@Koresh Thanks! Great solution with the adapter board as well, you really do think of everything. Do you have the other boards without radio as well? Specifically the Switch Controller?
-
@Koresh Thanks! Great solution with the adapter board as well, you really do think of everything. Do you have the other boards without radio as well? Specifically the Switch Controller?
@bjornhallberg
I have some insertable switch boards without radio. I planned to solder nrf24 into them but can sell them without radio too (it supports only cw modules). Will put up for sale soon. -
@bjornhallberg
I have some insertable switch boards without radio. I planned to solder nrf24 into them but can sell them without radio too (it supports only cw modules). Will put up for sale soon.@Koresh Sounds great! Oh and btw, any idea how customs will handle the packages, any chance of taxes and customs fees? You're outside of the EU customs union right?
-
@Koresh Sounds great! Oh and btw, any idea how customs will handle the packages, any chance of taxes and customs fees? You're outside of the EU customs union right?
@bjornhallberg I do not know exactly, but I don't think there should be any fees. Try to find out tomorrow.
-
@Koresh I got one of boards and would like to add Si1132-A10-GMR. What else I need to add? C8?
Why are you not using this sensor on your board?@alexsh1 yes, you should solder the sensor and the bypass capacitor. I have a lot of si1132 sensors, but I can't find the correct library. Almost promo videos of commertial sensors based on the si1132 shows incorrect data ))) It shows correct UV and IR level, but incorrect visible light value. So I decided to not solder this sensor yet.
-
@Koresh I would only use it for UV so this is good for me.
No need to use a lib:
// Distributed with a free-will license. // Use it any way you want, profit or free, provided it fits in the licenses of its associated works. // SI1132 // This code is designed to work with the SI1132_I2CS I2C Mini Module available from ControlEverything.com. // https://www.controleverything.com/content/Light?sku=SI1132_I2CS#tabs-0-product_tabset-2 #include<Wire.h> // SI1132 I2C address is 0x60(96) #define Addr 0x60 int response = 0; void setup() { // Initialise I2C communication as MASTER Wire.begin(); // Initialise Serial Communication, Baud rate = 9600 Serial.begin(9600); // Enable UVindex measurement coefficients // Start I2C Transmission Wire.beginTransmission(Addr); // Select COFF-1 register Wire.write(0x13); // Default value Wire.write(0x29); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select COFF-2 register Wire.write(0x14); // Default value Wire.write(0x89); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select COFF-3 register Wire.write(0x15); // Default value Wire.write(0x02); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select COFF-4 register Wire.write(0x16); // Default value Wire.write(0x00); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_WR register Wire.write(0x17); // Enable uv, Visible, IR Wire.write(0xF0); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select command register Wire.write(0x18); // Select CHLIST register in RAM Wire.write(0x01 | 0xA0); // Stop I2C Transmission Wire.endTransmission(); delay(10); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_RD register Wire.write(0x2E); // Stop I2C Transmission Wire.endTransmission(); // Request 1 byte of data Wire.requestFrom(Addr, 1); // Read 1 byte of data response = Wire.read(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select HW_KEY register Wire.write(0x07); // Default value Wire.write(0x17); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_WR register Wire.write(0x17); // Small IR photodiode Wire.write(0x00); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select COMMAND register Wire.write(0x18); // Select ALS_IR_ADCMUX register in RAM Wire.write(0x0E | 0xA0); // Stop I2C Transmission Wire.endTransmission(); delay(10); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_RD register Wire.write(0x2E); // Stop I2C Transmission Wire.endTransmission(); // Request 1 byte of data Wire.requestFrom(Addr, 1); // Read 1 byte of data response = Wire.read(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_WR register Wire.write(0x17); // Set ADC Clock divided / 1 Wire.write(0x00); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select COMMAND register Wire.write(0x18); // Select ALS_IR_ADC_GAIN register in RAM Wire.write(0x1E | 0xA0); // Stop I2C Transmission Wire.endTransmission(); delay(10); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_RD register Wire.write(0x2E); // Stop I2C Transmission Wire.endTransmission(); // Request 1 byte of data Wire.requestFrom(Addr, 1); // Read 1 byte of data response = Wire.read(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_WR register Wire.write(0x17); // Set 511 ADC Clock Wire.write(0x70); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select COMMAND register Wire.write(0x18); // Select ALS_IR_ADC_COUNTER register in RAM Wire.write(0x1D | 0xA0); // Stop I2C Transmission Wire.endTransmission(); delay(10); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_RD register Wire.write(0x2E); // Stop I2C Transmission Wire.endTransmission(); // Request 1 byte of data Wire.requestFrom(Addr, 1); // Read 1 byte of data response = Wire.read(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_WR register Wire.write(0x17); // Set ADC Clock divided / 1 Wire.write(0x00); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select COMMAND register Wire.write(0x18); // Select ALS_VIS_ADC_GAIN register in RAM Wire.write(0x11 | 0xA0); // Stop I2C Transmission Wire.endTransmission(); delay(10); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_RD register Wire.write(0x2E); // Stop I2C Transmission Wire.endTransmission(); // Request 1 byte of data Wire.requestFrom(Addr, 1); // Read 1 byte of data response = Wire.read(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_WR register Wire.write(0x17); // High Signal Range Wire.write(0x20); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select COMMAND register Wire.write(0x18); // Select ALS_IR_ADC_MISC register in RAM Wire.write(0x1F | 0xA0); // Stop I2C Transmission Wire.endTransmission(); delay(10); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_RD register Wire.write(0x2E); // Stop I2C Transmission Wire.endTransmission(); // Request 1 byte of data Wire.requestFrom(Addr, 1); // Read 1 byte of data response = Wire.read(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_WR register Wire.write(0x17); // Set 511 ADC Clock Wire.write(0x70); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select COMMAND register Wire.write(0x18); // Select ALS_VIS_ADC_COUNTER register in RAM Wire.write(0x10 | 0xA0); // Stop I2C Transmission Wire.endTransmission(); delay(10); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_RD register Wire.write(0x2E); // Stop I2C Transmission Wire.endTransmission(); // Request 1 byte of data Wire.requestFrom(Addr, 1); // Read 1 byte of data response = Wire.read(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_WR register Wire.write(0x17); // High Signal Range Wire.write(0x20); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select COMMAND register Wire.write(0x18); // Select ALS_VIS_ADC_MISC register in RAM Wire.write(0x12 | 0xA0); // Stop I2C Transmission Wire.endTransmission(); delay(10); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_RD register Wire.write(0x2E); // Stop I2C Transmission Wire.endTransmission(); // Request 1 byte of data Wire.requestFrom(Addr, 1); // Read 1 byte of data response = Wire.read(); delay(300); } void loop() { unsigned int data[4]; // Start I2C Transmission Wire.beginTransmission(Addr); // Select COMMAND register Wire.write(0x18); // Start ALS conversion Wire.write(0x0E); // Stop I2C Transmission Wire.endTransmission(); delay(500); // Start I2C Transmission Wire.beginTransmission(Addr); // Select data register Wire.write(0x22); // Stop I2C Transmission Wire.endTransmission(); // Request 4 byte of data Wire.requestFrom(Addr, 4); // Read 4 bytes of data // visible lsb, visible msb, ir lsb, ir msb if (Wire.available() == 4) { data[0] = Wire.read(); data[1] = Wire.read(); data[2] = Wire.read(); data[3] = Wire.read(); } float visible = (data[1] * 256.0 + data[0]); float ir = (data[3] * 256 + data[2]); // Start I2C Transmission Wire.beginTransmission(Addr); // Select data register Wire.write(0x2C); // Stop I2C Transmission Wire.endTransmission(); // Request 2 bytes of data Wire.requestFrom(Addr, 2); // Read 2 bytes of data // uv lsb, uv msb if (Wire.available() == 2) { data[0] = Wire.read(); data[1] = Wire.read(); } // Convert the data float uv = (data[1] * 256 + data[0]); // Output data to screen Serial.print("Visible Light of Source : "); Serial.print(visible); Serial.println(" lux"); Serial.print("IR Of Source : "); Serial.print(ir); Serial.println(" lux"); Serial.print("UV Of the Source : "); Serial.print(uv); Serial.println(" lux"); delay(500); } -
@Koresh I would only use it for UV so this is good for me.
No need to use a lib:
// Distributed with a free-will license. // Use it any way you want, profit or free, provided it fits in the licenses of its associated works. // SI1132 // This code is designed to work with the SI1132_I2CS I2C Mini Module available from ControlEverything.com. // https://www.controleverything.com/content/Light?sku=SI1132_I2CS#tabs-0-product_tabset-2 #include<Wire.h> // SI1132 I2C address is 0x60(96) #define Addr 0x60 int response = 0; void setup() { // Initialise I2C communication as MASTER Wire.begin(); // Initialise Serial Communication, Baud rate = 9600 Serial.begin(9600); // Enable UVindex measurement coefficients // Start I2C Transmission Wire.beginTransmission(Addr); // Select COFF-1 register Wire.write(0x13); // Default value Wire.write(0x29); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select COFF-2 register Wire.write(0x14); // Default value Wire.write(0x89); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select COFF-3 register Wire.write(0x15); // Default value Wire.write(0x02); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select COFF-4 register Wire.write(0x16); // Default value Wire.write(0x00); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_WR register Wire.write(0x17); // Enable uv, Visible, IR Wire.write(0xF0); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select command register Wire.write(0x18); // Select CHLIST register in RAM Wire.write(0x01 | 0xA0); // Stop I2C Transmission Wire.endTransmission(); delay(10); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_RD register Wire.write(0x2E); // Stop I2C Transmission Wire.endTransmission(); // Request 1 byte of data Wire.requestFrom(Addr, 1); // Read 1 byte of data response = Wire.read(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select HW_KEY register Wire.write(0x07); // Default value Wire.write(0x17); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_WR register Wire.write(0x17); // Small IR photodiode Wire.write(0x00); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select COMMAND register Wire.write(0x18); // Select ALS_IR_ADCMUX register in RAM Wire.write(0x0E | 0xA0); // Stop I2C Transmission Wire.endTransmission(); delay(10); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_RD register Wire.write(0x2E); // Stop I2C Transmission Wire.endTransmission(); // Request 1 byte of data Wire.requestFrom(Addr, 1); // Read 1 byte of data response = Wire.read(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_WR register Wire.write(0x17); // Set ADC Clock divided / 1 Wire.write(0x00); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select COMMAND register Wire.write(0x18); // Select ALS_IR_ADC_GAIN register in RAM Wire.write(0x1E | 0xA0); // Stop I2C Transmission Wire.endTransmission(); delay(10); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_RD register Wire.write(0x2E); // Stop I2C Transmission Wire.endTransmission(); // Request 1 byte of data Wire.requestFrom(Addr, 1); // Read 1 byte of data response = Wire.read(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_WR register Wire.write(0x17); // Set 511 ADC Clock Wire.write(0x70); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select COMMAND register Wire.write(0x18); // Select ALS_IR_ADC_COUNTER register in RAM Wire.write(0x1D | 0xA0); // Stop I2C Transmission Wire.endTransmission(); delay(10); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_RD register Wire.write(0x2E); // Stop I2C Transmission Wire.endTransmission(); // Request 1 byte of data Wire.requestFrom(Addr, 1); // Read 1 byte of data response = Wire.read(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_WR register Wire.write(0x17); // Set ADC Clock divided / 1 Wire.write(0x00); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select COMMAND register Wire.write(0x18); // Select ALS_VIS_ADC_GAIN register in RAM Wire.write(0x11 | 0xA0); // Stop I2C Transmission Wire.endTransmission(); delay(10); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_RD register Wire.write(0x2E); // Stop I2C Transmission Wire.endTransmission(); // Request 1 byte of data Wire.requestFrom(Addr, 1); // Read 1 byte of data response = Wire.read(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_WR register Wire.write(0x17); // High Signal Range Wire.write(0x20); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select COMMAND register Wire.write(0x18); // Select ALS_IR_ADC_MISC register in RAM Wire.write(0x1F | 0xA0); // Stop I2C Transmission Wire.endTransmission(); delay(10); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_RD register Wire.write(0x2E); // Stop I2C Transmission Wire.endTransmission(); // Request 1 byte of data Wire.requestFrom(Addr, 1); // Read 1 byte of data response = Wire.read(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_WR register Wire.write(0x17); // Set 511 ADC Clock Wire.write(0x70); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select COMMAND register Wire.write(0x18); // Select ALS_VIS_ADC_COUNTER register in RAM Wire.write(0x10 | 0xA0); // Stop I2C Transmission Wire.endTransmission(); delay(10); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_RD register Wire.write(0x2E); // Stop I2C Transmission Wire.endTransmission(); // Request 1 byte of data Wire.requestFrom(Addr, 1); // Read 1 byte of data response = Wire.read(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_WR register Wire.write(0x17); // High Signal Range Wire.write(0x20); // Stop I2C Transmission Wire.endTransmission(); // Start I2C Transmission Wire.beginTransmission(Addr); // Select COMMAND register Wire.write(0x18); // Select ALS_VIS_ADC_MISC register in RAM Wire.write(0x12 | 0xA0); // Stop I2C Transmission Wire.endTransmission(); delay(10); // Start I2C Transmission Wire.beginTransmission(Addr); // Select PARAM_RD register Wire.write(0x2E); // Stop I2C Transmission Wire.endTransmission(); // Request 1 byte of data Wire.requestFrom(Addr, 1); // Read 1 byte of data response = Wire.read(); delay(300); } void loop() { unsigned int data[4]; // Start I2C Transmission Wire.beginTransmission(Addr); // Select COMMAND register Wire.write(0x18); // Start ALS conversion Wire.write(0x0E); // Stop I2C Transmission Wire.endTransmission(); delay(500); // Start I2C Transmission Wire.beginTransmission(Addr); // Select data register Wire.write(0x22); // Stop I2C Transmission Wire.endTransmission(); // Request 4 byte of data Wire.requestFrom(Addr, 4); // Read 4 bytes of data // visible lsb, visible msb, ir lsb, ir msb if (Wire.available() == 4) { data[0] = Wire.read(); data[1] = Wire.read(); data[2] = Wire.read(); data[3] = Wire.read(); } float visible = (data[1] * 256.0 + data[0]); float ir = (data[3] * 256 + data[2]); // Start I2C Transmission Wire.beginTransmission(Addr); // Select data register Wire.write(0x2C); // Stop I2C Transmission Wire.endTransmission(); // Request 2 bytes of data Wire.requestFrom(Addr, 2); // Read 2 bytes of data // uv lsb, uv msb if (Wire.available() == 2) { data[0] = Wire.read(); data[1] = Wire.read(); } // Convert the data float uv = (data[1] * 256 + data[0]); // Output data to screen Serial.print("Visible Light of Source : "); Serial.print(visible); Serial.println(" lux"); Serial.print("IR Of Source : "); Serial.print(ir); Serial.println(" lux"); Serial.print("UV Of the Source : "); Serial.print(uv); Serial.println(" lux"); delay(500); }@Koresh BTW, Found this library - working fine for my needs
https://github.com/hardkernel/WEATHER-BOARD/tree/master/libraries/ODROID_Si1132
I am using this sensor purely for UV Index.
PS Got your sensor. Soldered it to the mote. Works just fine
-
@alexsh1 yes, you should solder the sensor and the bypass capacitor. I have a lot of si1132 sensors, but I can't find the correct library. Almost promo videos of commertial sensors based on the si1132 shows incorrect data ))) It shows correct UV and IR level, but incorrect visible light value. So I decided to not solder this sensor yet.
-
@Koresh I can see Si1132 visible light is twice more than BH1750.
Not sure what's wrong, but as you said it reports incorrect value.UV Index is in line with VEML6070
The sensor looks more complicated that I thought:
2.2. Ambient Light
The Si1132 has photodiodes capable of measuring both vi
sible and infrared light. Howe
ver, the visible photodiode
is also influenced by infrared light. The measurement of illuminance require
s the same spectral response as the
human eye. If an accurate lux measurement is desired, the
extra IR response of the vi
sible-light photodiode must
be compensated. Therefore, to allow the host to make corrections to the infrared light’s influence, the Si1132
reports the infrared light measurement on a separate channel. The separate visible and IR photodiodes lend
themselves to a variety of algorithmic solutions. The
host can then take these two measurements and run an
algorithm to derive an equivalent lux level as perceive
d by a human eye. Having
the IR correction algorithm
running in the host a
llows for the most flexibility in adjusting for system-dependent
variables. For example, if the
glass used in the system blocks visibl
e light more than infrared light, the
IR correction needs to be adjusted.I will have to spend more time to understand how to extract the correct ambient light
-
The sensor looks more complicated that I thought:
2.2. Ambient Light
The Si1132 has photodiodes capable of measuring both vi
sible and infrared light. Howe
ver, the visible photodiode
is also influenced by infrared light. The measurement of illuminance require
s the same spectral response as the
human eye. If an accurate lux measurement is desired, the
extra IR response of the vi
sible-light photodiode must
be compensated. Therefore, to allow the host to make corrections to the infrared light’s influence, the Si1132
reports the infrared light measurement on a separate channel. The separate visible and IR photodiodes lend
themselves to a variety of algorithmic solutions. The
host can then take these two measurements and run an
algorithm to derive an equivalent lux level as perceive
d by a human eye. Having
the IR correction algorithm
running in the host a
llows for the most flexibility in adjusting for system-dependent
variables. For example, if the
glass used in the system blocks visibl
e light more than infrared light, the
IR correction needs to be adjusted.I will have to spend more time to understand how to extract the correct ambient light
-
The sketch I posted above contains some errors
(it sets COFFs 0x29, 0x89, 0x02 and 0x00 to the 0x13, 0x14, 0x15 and 0x16 registers).The correct UCOEF values are 0x7B, 0x6B, 0x01, and 0x00
The sensor is quite complex.
I got the following values from the sensor:
- V_VOLTAGE (3.21)
- V_HUM (51
- V_TEMP (30)
- V_LIGHT_LEVEL (4466)
- V_UV (1.74)
- V_LIGHT_LEVEL (3367)
- V_LIGHT_LEVEL (3367)
Clearly, Si1132 is not in line with BH1750. VEML6075 is giving me UV Index 1.65, which is close to the Si1132.
Moreover, depending where it is used, the coeff in formula has to change (I am using 0.282 for the direct sunlight) :
Visible Photodiode Response Sunlight ALS_VIS_ADC_GAIN=0 VIS_RANGE=0 — 0.282 2500K incandescent bulb ALS_VIS_ADC_GAIN=0 VIS_RANGE=0 0.319 “Cool white” fluorescent ALS_VIS_ADC_GAIN=0 VIS_RANGE=0 0.146
