I wanted to experiment with the RFM69W radio on my existing Arduinos so I created a breakout board. The board has the same edge pinout as the RFM12B Board from JeeLabs so you can swap between them.
Details are here: https://github.com/uChip/RFM69W_BOB
You can order the board from Osh Park here: http://oshpark.com/shared_projects/bJRprI06
$6.75 for three boards (PCBs only).
Note that the board is NOT compatible with the RFM12B or the RFM69CW. Use the JeeLabs board for those.
Have fun.
- Chip
Excellent! I ordered a few RFM69HW transceivers awhile ago and was going to hack up a solution that would allow me to plug them into a breadboard, decided to order your breakout boards instead.
Cool. According to the mechanical drawings that should work fine, but I haven't tested with the 'HW. Let us know how it goes.
uChip,
Nice idea on the Breakout Board, especially the level shifting resistor option. Do you have a parts list available for use with the Board? I just ordered three.
Thanks,
Vince
Here is the order list
Qty | Parts | Value | Mfg Part # | Description / Vendor |
1 | JP1 | 8-pins | | Break Away Male Headers - Right Angle https://www.sparkfun.com/products/553 |
1 | PCB | | RFM69W Breakout Board | http://oshpark.com/shared_projects/bJRprI06 |
2 | C1, C2 | 0.1uF | C2012X7R2A104K125AA | CAP CER 0.1UF 100V 10% X7R 0805; Digi-Key #445-1418-1-ND |
3 | R4, R5, R6 | 10k | CRT0805-BY-1002ELF | RES 10K OHM 1/8W .1% 0805 SMD; Digi-Key #CRT0805-BY-1002ELFCT-ND |
1 | C4 | 10uF | F951A106MRAAQ2 | CAP TANT 10UF 10V 20% 0805; Digi-Key #478-8418-1-ND |
3 | R1, R2, R3 | 4k7 | ERJ-6GEYJ472V | RES 4.7K OHM 1/8W 5% 0805 SMD; Digi-Key #P4.7KACT-ND |
1 | U2 | MCP1701 | MCP1701AT-3302I/MB | IC REG LDO 3.3V 0.15A SOT89-3; Digi-Key #MCP1701AT-3302I/MBCT-ND |
1 | U1 | RFM69W | RFM69W-S2 | http://lowpowerlab.com/shop/RFM69W |
And here is the parts list
| Part | Value | Device | Package | Description | |
| C1 | 0.1uF | CAP0805 | 0805 | Capacitor | |
| C2 | 0.1uF | CAP0805 | 0805 | Capacitor | |
| C4 | 10uF | CAP_POL0805 | 0805-POL | | |
| JP1 | | 8pins | 1X08_RIGHT_ANGLE | Header 8 | |
| R1 | 4k7 | RESISTOR0805-RES | 0805 | Resistor | |
| R2 | 4k7 | RESISTOR0805-RES | 0805 | Resistor | |
| R3 | 4k7 | RESISTOR0805-RES | 0805 | Resistor | |
| R4 | 10k | RESISTOR0805-RES | 0805 | Resistor | |
| R5 | 10k | RESISTOR0805-RES | 0805 | Resistor | |
| R6 | 10k | RESISTOR0805-RES | 0805 | Resistor | |
| U1 | RFM69W | RFM69W | RFM69W | Radio Transceiver Module, FSK, 433, 848, 915 MHz, SPI controlled, Mfr=HopeRF | |
| U2 | MCP1701 | MCP1701 | SOT-89 | Voltage Regulator, LDO, fixed 1.8,2.5,3.0,3.3,5.0V, 500mW/Vdrop | |
Note that all parts are "or equivalent". These are the parts I tested with, but you can probably substitute parts with no impact on function. For instance, any 0805 package 10k resistor would be fine.
Do check the repo document as not all parts are needed in all applications.
I will also add this info to the github repo.
- Chip
Hi Why use a voltage divider vs a level shifting chip? Pro's/Cons?
Resistors will work just fine, cheapest option.
You can also use FETs or dedicated chips for level shifting, these are more complex/expensive solutions. For hobby stuff resistors are fine, if you are the military you might want shifting chips ;)