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There are also other solutions that have I2C bus pins on the shield and if you are going to make a battery powered node, I'd suggest to use an I2C sensor as it will be much more battery friendly
A mini shield for an Arduino Mini Pro to simplify the connection to the RFM69W or RFM69HW. It includes space for a 1206 capacitor to stabilize the supply voltage, (tested with 10uF), a pad for Vcc, GND and IRQ. Also included is pcb pad to connect horizontally a PCB SMA plug, or a wire antenna
| Qty | Value | Device | Package | Parts | Description | MF | MPN | Aliexpress or Ebay link |
|---|---|---|---|---|---|---|---|---|
| 1 | RFM69(H)W | |||||||
| 1 | 10uF | 1206 |
| Name | Size | # Downloads |
|---|---|---|
| OSHPARKPCB.GBL | 14.78 kB | 598 |
| OSHPARKPCB.GBO | 3.21 kB | 521 |
| OSHPARKPCB.GBS | 1.62 kB | 637 |
| OSHPARKPCB.GKO | 221 B | 568 |
| OSHPARKPCB.GTL | 14.36 kB | 541 |
| OSHPARKPCB.GTO | 1.77 kB | 587 |
| OSHPARKPCB.GTP | 647 B | 517 |
| OSHPARKPCB.GTS | 2.04 kB | 584 |
| OSHPARKPCB.drl | 1.42 kB | 572 |
| Revision | Created | Layers | Dimensions |
|---|---|---|---|
| rev1 | 8 years ago | 2 | 38 × 19 |
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gohan commented 7 years ago
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jlaraujo commented 7 years ago
@556duckvader, like @gohan referred, you can attach the DHT22 to the arduino and not to the shield.
You can make a simple PCB that will connect to the required ports for the DHT22 to operate.
If you'd like to have an even smaller footprint, try this design:
https://www.openhardware.io/view/615
It is not yet tested in production, probably will be by the end of the week. -
gohan commented 7 years ago
The sensor will be attached to the arduino, not to the shield
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556duckvader commented 7 years ago
I really like this design as I am looking for a small for factor RFM69 shield. One question how hard would it be to integrate a connection for a DHT22 to be able to have a small temp and humidity transmitter. I need to have about 5 of these setup in different locations sending temp and humidity back to a gateway.
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gohan commented 8 years ago
Since I ordered 1.6mm pcbs, I think I should be fine then.
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sundberg84 commented 8 years ago@gohan - I have found both 1.6mm and 1mm on Ebay. Since i like to order 1mm thats what i went with SMA connector but it was way easier to find 1.6mm. I just mean a easy misstake would be to order a 1.6mm SMA connector and 1.0mm pcb. Might probably work.
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stevebus commented 8 years agoThanks @jlaraujo... Definitely keep us up to date and i'll be happy to order and try it out.
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jlaraujo commented 8 years ago
@stevebus glad it is working i have an updated version of the pcb in the first production run, that will not need any extra wiring, i'll keep you guys updated on the progress.
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jlaraujo commented 8 years ago
@gohan It seems to be a standard sma size the 1.6mm distance between the legs, anyway if it is bigger you can solder only the top layer, if it is shorter, you can cut some legs.
Not the best but it should work. -
stevebus commented 8 years ago
Was able to finish up the soldering, and just playing with the mocksensor sketch... works great! (not sure why my pics are sideways, they are straight on my machine
)Looking at the RSSI data, this sensor seems to be about the same signal strength as my other sensors (maybe even slightly better, probably due to the shorter and more solid connections). So it seems that the performance of the radio is pretty good.
