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Prior to installing TelemetrEZ, you may wish to review our Options for your 9x stock transmitter module page.

Below is a pictorial showing the installation of our TelemetrEZ.  Click the thumbnails to see the full image.

Your TelemetrEZ kit comes with the following pieces:  A) 12-wire Cable A; B) 5-wire Cable B; C) 2-wire Cable C; D) 2-wire Cable D; E) TelemetrEZ; F) Bag of hardware (2 screws, 2 spacers)

Step 1: Turn your 9x radio over and remove the 6 case screws with a basic Philips style screwdriver.

Step 2: The two halves of your radio are connected with a single cable highlighted below.  Carefully disconnect that cable by gently pulling while wiggling the connector side to side.

Step 3: Remove the two lower screws holding the backplane circuit board to the case.  Position the two included spacers over the screw holes then attach the TelemetrEZ with two longer screws.  Please note that there have been different screws used in the various 9x models, and even different screws in the same 9x!  The included screws may or may not be suitable for your particular unit without some modification (ie. you may have to drill the hole out).  It is not critical that you install TelemetrEZ in this location, so you are free to place it anywhere the cables will reach.  If you use a different location, be sure to protect the circuitry from contacting anything metal that may cause a short circuit.

Step 4: Disconnect your 9x's 12-pin and left-side 5-pin connectors and plug them into the appropriate horizontal headers on the TelemetrEZ as shown.

Step 5: Connect one end of the supplied 12 (A) and 5 (B) wire jumper cables into the appropriate vertical headers on the TelemetrEZ, as shown, and the other end into their respective spots on the 9x. 

Step 6: Connect one end of the long 2-wire jumper cable (C) to the 2-pin header on the TelemetrEZ marked "9X".

Step 7: The other end of cable C connects differently depending on which version, if any, SmartieParts programmer board you have.  If you have a Rev. 2.3 or higher SmartieParts board, then simply plug it into the SmartieParts header marked "TelemetrEZ".  If you have an older SmartieParts board, you'll need to snip the connector off this cable and solder the "left" wire to the SmartieParts pad marked "MISO" and the "right" wire to the SmartieParts pad marked "MOSI".  If you don't have a SmartieParts board at all, then solder the left and right wires to MISO and MOSI on the 9x directly.

Step 8: Cable D (one black, one white wire) is for connecting the FrSky Telemetry module to TelemetrEZ.  The small white connector plugs into TelemetrEZ in the header marked "FrSky" and the larger black connector is intended to plug directly into your FrSky DJT Module, if that's what you have.  For ease of installation, our suggestion is to drill a hole in the back of your case and simply pass the small connector from the outside to the inside and plug it into the board.  You can get away with a 1/8" (3.5mm) hole if you remove the pins from the white connector and pass them through, one at a time, before putting them back in the connector.  This is what we've done below.  Otherwise, you can drill a larger 1/4" (6mm) hole for the entire connector to pass through.

But some people won't like the look of wires showing out back at all.  Others may not even have a DJT module.  We can't possibly cover every different way to make the connection.  The above recommendation is the easiest but you're free to make the connection as you see fit.  The important thing is that the black wire connects to the FrSky "rxd" signal and the white wire connects to the "txd" signal.  For a cleaner result that's more involved, see this page.

The installation is done!  Now you need to flash your 9x with appropriate firmware.  Note that the firmware must support TelemetrEZ.  Check with your firmware provider.  The latest ER9X binaries with FrSky do support TelemetrEZ.   Many of the other firmware packages adopt ER9X changes, but if your preferred firmware does not yet support TelemetrEZ, ask the developers of that project to add it!


TelemetrEZ can do more than just process Telemetry signals!  With appropriate firmware in the TelemetrEZ combined with 9x firmware support, there's an array of possibilities!  For you creative developers out there, you'll probably need some info to get you started.

First, the TelemetrEZ basic firmware is Open Source, so you can check it out to see how it does what it does from a code perspective.  Second, you'll probably want to know the capabilities of the TelemetrEZ's Attiny 1634 processor, and you can find that on this Atmel page.  Finally, you'll want to know a bit about the TelemetrEZ's expansion layout.  That's shown in the image below.

Note that we also left space on the board for you to add a 3-pin resonator if you want finer control over clock speed.  There's also a blank spot for an EEPROM chip because we just know someone's going to want to use it to add more model memory potential to the 9x.  That's just the surface... and I can't wait to see what the community comes up with!

Is there a TelemetrEZ schematic available?  Not at this time.  If you think you really need it, convince me.