env_sensor
Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision | ||
env_sensor [2014/08/23 17:36] – [Firmware <= v0.6.0] breaker27 | env_sensor [2015/04/15 23:03] – [Connect a SHT21 / SHT25] breaker27 | ||
---|---|---|---|
Line 12: | Line 12: | ||
| 1 | PCB Generic Midi 1 | | | 1 | PCB Generic Midi 1 | | ||
| 1 | Resistor 560R green-blue-brown | | 1 | Resistor 560R green-blue-brown | ||
- | | 1 | Resistor 150k 0,1% brown-green-black | + | | 1 | Resistor 150k 0,1% brown-green-black |
- | | 1 | Resistor 330k 0,1% orange-orange-black | + | | 1 | Resistor 330k 0,1% orange-orange-black |
| 1 | Resistor 1M brown-black-green | | 1 | Resistor 1M brown-black-green | ||
| 1 | Resistor 100k brown-black-yellow | | 1 | Resistor 100k brown-black-yellow | ||
- | | 1 | Resistor 10k brown-black-orange | + | | 1 | Resistor 10k brown-black-orange |
+ | | 1 | Resistor 4k7 yellow-violet-red | ||
| 1 | IC holder | | 1 | IC holder | ||
| 1 | LED 2mA | LED1 | {{ parts: | | 1 | LED 2mA | LED1 | {{ parts: | ||
Line 28: | Line 29: | ||
maybe extra pins, at your opinion. | maybe extra pins, at your opinion. | ||
- | |||
===== Buildup of PCB ===== | ===== Buildup of PCB ===== | ||
Line 58: | Line 58: | ||
After flashing and switching the power on, your temp sensor should blink quickly for some seconds. After that, it only flashes shortly once whenever a temperature data packet is sent (>5 min). | After flashing and switching the power on, your temp sensor should blink quickly for some seconds. After that, it only flashes shortly once whenever a temperature data packet is sent (>5 min). | ||
- | ===== Improve idle power consumption (PCB < v0.2) ===== | + | ===== Improve idle power consumption (PCB Rev. < 1.2) ===== |
{{: | {{: | ||
- | You only need this with a PCB version < 1.2. The advantage in power consumption is not so big if you don't have a photocell connected. To use this feature, you need also a firmware >= v0.7.0 or develop build from 06/17/2014 or later. | + | You only need this modification |
< | < | ||
Line 85: | Line 85: | ||
< | < | ||
- | ==== Firmware > v0.6.0 ==== | + | ==== PCB Rev. <= 1.1 ==== |
- | {{: | + | {{: |
If you look at the back of the PCB, you have to solder the wires as shown on the picture. | If you look at the back of the PCB, you have to solder the wires as shown on the picture. | ||
- | |||
- | A future PCB version will most probably have a 6-pin I/O header to connect the SCK pin of the SHT15 directly to the I/O port. | ||
< | < | ||
Line 101: | Line 99: | ||
< | < | ||
+ | ===== Connect a SHT21 / SHT25 ===== | ||
+ | |||
+ | You can connect these sensors either the same way as the SHT15 (with the Sensirion specific protocol) or connect it as a I2C device. Configure the E2P accordingly. | ||
+ | |||
+ | In principle, you can solder the sensor directly to cables. But the sensor is very tiny, so you should have some experience when trying to do that. Make sure to solder only one cable at a time and let the solder cool off to not overheat the sensor! | ||
+ | |||
+ | I recommend to mount the sensor + cables to something to make sure the solder joints don't break off. | ||
+ | |||
+ | {{sht25_size.jpg? | ||
+ | |||
+ | < | ||
===== Connect a DS7505 ===== | ===== Connect a DS7505 ===== | ||
Line 110: | Line 119: | ||
{{ds7505_connection.png? | {{ds7505_connection.png? | ||
+ | |||
+ | < | ||
+ | ===== Connect a DHT11 ===== | ||
+ | |||
+ | //describe it ...// | ||
+ | |||
+ | The four pins of the DHT11 are //GND//, //Unused//, //DATA// and //VCC//. Connect //DATA// to // | ||
+ | The sensor works when EnvSensor is powered by two AA batteries (90 Percent charge). | ||
< | < | ||
Line 140: | Line 157: | ||
You should use at least AA cells for the environment sensor when using the SRF02 and the voltage converter, because one SRF02 measurement takes about 0.015 mAh, which results in ~800 days battery lifetime at AA cells (2800 mAh) when you make one measurement every 7 minutes. | You should use at least AA cells for the environment sensor when using the SRF02 and the voltage converter, because one SRF02 measurement takes about 0.015 mAh, which results in ~800 days battery lifetime at AA cells (2800 mAh) when you make one measurement every 7 minutes. | ||
- | ===== Integrate it into a housing ===== | ||
- | describe it... | + | |
+ | ====== | ||
+ | // | ||
+ | describe it...// |
env_sensor.txt · Last modified: 2018/02/18 19:39 by breaker27