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  • Automating Eagle Export and Preparing It for Printing.

    Would help to know what OS you're on to give a proper response.On Ubuntu here I had some issues with the scaling and just the general print driver I installed for a cheapo B/W laser from Canon currently I use an lpr command line to send the image to the printer, despite seeming like a sort of antiquated way of doing things it does work reliably and the options in the manual are actually really nice for printing multiple copies per page doing various scaling and orientation changes etc. Glad to find this tutorial though didn't know you could save the steps in a script and had been manually going back to my favorites to find the steps to get an export. I usually export and print at 1200 dpi so a typical lpr command looks like, lpr -o ppi=1200 Images/pcb.png, where you'd replace Images/p...

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    Would help to know what OS you're on to give a proper response.On Ubuntu here I had some issues with the scaling and just the general print driver I installed for a cheapo B/W laser from Canon currently I use an lpr command line to send the image to the printer, despite seeming like a sort of antiquated way of doing things it does work reliably and the options in the manual are actually really nice for printing multiple copies per page doing various scaling and orientation changes etc. Glad to find this tutorial though didn't know you could save the steps in a script and had been manually going back to my favorites to find the steps to get an export. I usually export and print at 1200 dpi so a typical lpr command looks like, lpr -o ppi=1200 Images/pcb.png, where you'd replace Images/pcb.png with whatever actual file you want to print.

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  • Wireless Remote Using 2.4 Ghz NRF24L01 : Simple Tutorial Using of NRF24L01 & Arduino

    Nice job I also am using these modules for a controller with a model here http://www.thingiverse.com/thing:1864536 I made a preliminary PCB for hooking up between the nrf module and arduino nano but am thinking I will modify it to just have the atmega 328p chip right on my PCB instead of stacking the modules.

    For troubleshooting use a voltmeter and check that wires are connected where you expect, also check the voltage on the 3.3V is going to the wireless module without a problem. Also can be useful to use Serial.begin(9600); in your setup and Seral.println("signs of life"); Serial.println(someImportantVar); in your loop function to see that things are working on the arduino side. The <p> is HTML syntax and is accidental (probably copy paste problem or issue with instructable formatting, would check the zip for code).Beyond the voltmeter I just bought and assembled a really cheap oscilloscope ($20-30) and even with this cheapo oscilloscope I can see some digital signals on various pins communicating to the rf module.Also read up here for more details https://arduino-info.wi...

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    For troubleshooting use a voltmeter and check that wires are connected where you expect, also check the voltage on the 3.3V is going to the wireless module without a problem. Also can be useful to use Serial.begin(9600); in your setup and Seral.println("signs of life"); Serial.println(someImportantVar); in your loop function to see that things are working on the arduino side. The <p> is HTML syntax and is accidental (probably copy paste problem or issue with instructable formatting, would check the zip for code).Beyond the voltmeter I just bought and assembled a really cheap oscilloscope ($20-30) and even with this cheapo oscilloscope I can see some digital signals on various pins communicating to the rf module.Also read up here for more details https://arduino-info.wikispaces.com/Nrf24L01-2.4GH...In particular be sure to include a capacitor across the 3.3V and ground (with negative side towards ground), 100uF with any Voltage above 3.3V will be fine. The rf module will otherwise draw too much power occasionally causing it to "brown out".

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